Formateador JSON

Minificador JSON

JSON a YAML

YAML a JSON

Codificador HTML

Codificador URL

Minificador CSS

Minificador JS

Formateador SQL

Probador Regex

Comparador de Diferencias

Analiza expresiones cron en formato legible.

Extrae texto plano de HTML eliminando todas las etiquetas.

Consulta datos JSON usando expresiones JSONPath con filtrado.

Formatea y embellece documentos XML.

Construye y prueba solicitudes HTTP.

Formatea y embellece consultas GraphQL.

Muestra datos CSV en una tabla formateada.

Codifica archivos a cadenas Base64.

Codifica y genera tokens JWT.

Detect the technology stack of any website — frameworks, CMS, CDN, analytics, hosting, and more. Supports batch comparison of multiple sites.

Compare code side-by-side with syntax highlighting. Supports JSON structural diff, line-level changes, and merge-friendly output.

Convert cURL commands into equivalent code for fetch, axios, Python requests, Java HttpClient, Go net/http, and more — 100% local.

Edit HTML visually with a rich text editor. See live WYSIWYG preview alongside the HTML source code — 100% local.

Visualize how a regex pattern matches text with a step-by-step animated diagram. Copy railroad diagrams and get pattern explanations.

Generate a dark mode CSS override for any website. Input CSS or a URL and get ready-to-use dark theme variables — 100% local.

Build data transformation pipelines by dragging operations. Chain encode → decode → format → compress steps visually — a simplified CyberChef.

Lightweight API testing sandbox. Build HTTP requests with headers, body, and auth. Test endpoints without Postman — 100% local.

Turn your code into beautiful shareable images. Choose themes, window decorations, gradients, and export for social media — 100% local.

Audit multiple URLs for SEO at once. Check title length, meta description, headings, Open Graph tags, and get a comparison scorecard.

Codifica o decodifica cadenas Base64.

Convierte entre hexadecimal, binario y decimal.

Convertidor de Color

Convert between weight and length units.

Convertidor de Marca de Tiempo

Convierte datos CSV a formato JSON.

Convierte arreglos JSON a formato CSV.

Convert Excel files to CSV format.

Convert CSV files to Excel (.xlsx) format.

Create bar, line, pie, and doughnut charts from CSV data instantly. Paste or upload your CSV and customize colors, labels, and chart types. Runs 100% locally.

Extract audio from MP4 video files to MP3.

Convierte JSON a formato TOML.

Convierte TOML a formato JSON.

Convierte entre binario, octal, decimal y hexadecimal.

Convierte entre números romanos y arábigos.

Convierte texto a arte ASCII.

Consulta tipos MIME para extensiones de archivo.

Fusiona múltiples archivos PDF en uno.

Divide PDF en páginas individuales o rangos.

Comprime y reduce el tamaño del PDF.

Convierte páginas PDF a imágenes PNG o JPG.

Convierte imágenes a un solo archivo PDF.

Convert Markdown text to PDF document. Supports headings, lists, code blocks, tables, bold/italic, links, and more. Uses jsPDF for rendering.

Convert HTML code to PDF document. Supports page size, orientation, and margin settings. Uses html2canvas and jsPDF for rendering.

Convertidor de Mayúsculas y Minúsculas

Cuenta palabras, caracteres, líneas y bytes.

Analyze text readability with Flesch-Kincaid, Gunning Fog, and other scores. Get word count, sentence length stats, and grade-level estimates.

Genera texto de relleno para diseños.

Markdown a HTML

Convierte texto a slugs amigables para URL.

Elimina líneas duplicadas del texto.

Invierte texto, caracteres o líneas.

Ordena líneas alfabéticamente, por longitud o numéricamente.

Agrega números de línea al texto.

Elimina caracteres ocultos y de ancho cero.

Cuenta la frecuencia de caracteres en el texto.

Trunca texto a una longitud especificada.

Busca y reemplaza texto con soporte regex.

Ajusta el texto a un ancho especificado.

Codifica imágenes como Data URI Base64.

Analiza tiempo de lectura, habla y complejidad.

Verifica si el texto es un palíndromo.

Busca anagramas para una palabra o letras.

Mezcla y reordena aleatoriamente las letras.

Convierte texto a formato de oración.

Convierte tabulaciones a espacios o viceversa.

Convert text to speech using Web Speech API. Fully local, no server required. Adjust speed, pitch, volume, and choose from available voices.

Genera contraseñas aleatorias seguras.

Generador de Hash

Generador UUID

Decodificador JWT

Genera hashes de contraseña Bcrypt.

Genera cadenas aleatorias personalizadas.

Genera códigos TOTP usando una clave secreta.

Verifica información del certificado SSL/TLS.

Codifica y decodifica mensajes en código Morse.

Cifra y descifra texto usando el cifrado César.

Codifica y decodifica texto usando ROT13.

Cifra y descifra texto con cifrado Vigenère.

Genera valores de hash HMAC usando una clave.

Genera sumas de verificación de archivos.

Redimensiona imágenes a dimensiones especificadas.

Recorta imágenes a dimensiones especificadas.

Convierte imágenes entre diferentes formatos.

Comprime imágenes para reducir el tamaño.

Batch compress, convert format, or resize multiple images at once.

Agrega marcas de agua de texto o imagen.

Selecciona colores de imágenes subidas.

Aplica efectos de desenfoque a imágenes.

Rota imágenes a cualquier ángulo.

Voltea imágenes horizontal o verticalmente.

Captura a PNG

SVG a PNG

Genera favicon desde imágenes.

Generador de Imágenes de Relleno

Generador de Código QR

Recortador de Fotos de ID

Fondo de Foto de ID

Generador de Fotos de ID

Calculadora de Porcentaje

Calculadora de Fracciones

Calculadora Científica

Calculate monthly payments for personal or auto loans. See total interest paid and a full amortization schedule.

Calculadora de Propina

Cambio Porcentual

Calculadora de Promedio

Calcula la edad exacta desde la fecha de nacimiento.

PNG a SVG

Genera códigos de barras EAN y UPC.

Generate clean short links with custom aliases, QR codes, and click tracking analytics. 100% local, no account required.

Generador de Números Aleatorios

Consulta de Dirección IP

Consulta registros DNS de un dominio.

Prueba la latencia de red con ping.

Escanea puertos abiertos en un host.

Prueba de Velocidad de Sitio Web

Cuál es Mi IP

Analiza cadenas User-Agent para identificar navegador.

Resolución de Pantalla

Información del Navegador

Diferencia de Fechas

Convertidor de Zona Horaria

Cronómetro simple con registro de vueltas.

Establece un temporizador con alertas.

Ve la hora actual en múltiples zonas horarias.

Lanza una moneda virtual para resultados aleatorios.

Lanza dados virtuales personalizables.

Sorteo de Cartas

Mezcla aleatoriamente el orden de una lista.

Tomador de Decisiones

Generador de Sí o No

Generador de Citas

Generador de Texto para Memes

Generador de Registro de Cambios

Generador de README

Generador de Política de Privacidad

Generador de Términos

Generador de Mapa del Sitio

Generador de Robots.txt

Stay focused with a customizable Pomodoro timer featuring work/break cycles, progress tracking, and browser notifications.

A quick, auto-saving notepad that stores notes in your browser. Supports plain text and basic Markdown preview.

Manage tasks with a simple, localStorage-backed todo list. Add, edit, reorder, and check off items — data stays on your device.

Generador de Degradado CSS

Create flowcharts, sequence diagrams, class diagrams, and more using Mermaid syntax. Live preview with one-click copy and export.

Discover beautiful Google Fonts pairings for headings and body text. Preview combinations side by side with sample paragraphs.

Generador de sombra de caja

Generador de JSON Schema

Verificador de estado HTTP

Generador de Data URI

Generador de QR WiFi

Validador de Tarjetas de Crédito

Validador de IBAN

Escala de Grises de Imagen

Visor de Metadatos de Imagen

Optimizador SVG

Convert PNG and JPG images to ICO favicon format. Generate multi-size icon files for websites and applications.

Add rounded corners to images with adjustable border radius. Preview and download as PNG with transparent background.

Split an image into a grid of equal tiles. Choose rows, columns, and export all pieces as a ZIP file.

Calculadora de Proporción

Calculate your Body Mass Index (BMI) using metric or imperial units. See your BMI category and healthy weight range.

Estimate calories burned during common activities including running, cycling, walking, and swimming. Based on MET values.

Calculate statistical significance, confidence intervals, and lift for your A/B test results. Determine if your experiment has a winner.

Ordenador de Números

Generador Open Graph

Verificador de Puertos

Búsqueda de Emojis

Generador de Tablas Markdown

Escape Unescape

Generate powerful AI prompts for ChatGPT, Midjourney, and more.

Summarize long text into concise key points instantly.

Explain what your code does in plain language.

Run a fast on-page SEO audit checklist for titles, meta tags, headings, links, and content quality.

Analyze title, meta description, Open Graph, Twitter Card, canonical, and robots meta snippets.

Measure keyword frequency, density, and content focus for SEO writing.

Generate long-tail keyword ideas, question keywords, and modifier combinations.

Prepare a backlink review checklist and organize referring-domain data for SEO analysis.

Extract domain details and generate a domain age / authority review checklist.

Inspect URL redirect plans and generate a safe migration checklist.

Paste URLs or links and identify likely broken, malformed, or risky links.

Test robots.txt rules against user agents and paths before publishing.

Extract URLs from XML sitemap text and export a clean URL list.

Create structured drafts for articles, posts, product pages, and marketing copy.

Generate SEO-friendly titles, headlines, and social hooks from a topic.

Generate clear paragraphs from a topic, keywords, and tone.

Draft professional emails for outreach, replies, follow-ups, and support.

Rewrite AI-like text into a more natural, human, readable style.

Find common grammar, punctuation, casing, and readability issues.

Generate academic citations in APA, MLA, Chicago, and GB/T 7714 formats. Enter source details and get formatted references.

Compare two text passages for similarity. Calculate overlap percentage and highlight matching sections locally in your browser.

Compress an image toward a 50KB target size in your browser.

Compress an image toward a 100KB target size in your browser.

Resize and compress an image toward a 50KB target.

Resize and compress an image toward a 100KB target.

Convert PNG images to JPG format locally.

Convert JPG or JPEG images to PNG format locally.

Convert WebP images to PNG format in your browser.

Convert images to lightweight WebP format.

Upload a screenshot and annotate it with arrows, text, shapes, blur, crop, and highlight. Export as PNG with one click — 100% local.

Enter a URL to capture a full-page or viewport screenshot. Supports desktop, tablet, and mobile viewport simulation.

Convert images to modern AVIF format for smaller file sizes. Supports batch conversion with quality comparison — 100% local.

Generate all favicon sizes from one image: 16x16, 32x32, 48x48, 180x180, 192x192, manifest.json, and ICO — 100% local.

Prepare a PDF compression plan for a custom target size (KB).

Generate trending hashtag combinations for Instagram, TikTok, and Twitter based on keywords and topics.

Create Instagram captions with hooks, emojis, and calls to action.

Generate clickable YouTube video titles optimized for search intent.

Draft YouTube descriptions with timestamps, links, and SEO keywords.

Generate YouTube tags and keyword variations for video discovery.

Count X/Twitter characters and check post length instantly.

Create professional LinkedIn posts from a topic and tone.

Generate short bios for Instagram, X, TikTok, LinkedIn, and creators.

Plan and optimize cross-platform content distribution. Select target platforms, preview platform-specific formatting, generate shareable links, and schedule publishing in one place.

Paste a URL to extract the article content, metadata, and images. Export as clean Markdown, HTML, or structured data — 100% local.

Build campaign tracking URLs with UTM parameters for Google Analytics. Generate ready-to-use links for marketing campaigns.

Calculate ad spend, clicks, revenue, profit, ROAS, and ROI.

Calculate gross profit, markup, and margin from cost and price.

Add or remove VAT/tax from a price and calculate tax amount.

Calculate sale price, discount amount, and savings percentage.

Calculate how many units you need to sell to break even.

Generate a simple invoice preview from business and line-item data.

Create a clean resume draft from your role, experience, skills, and education.

Generate a tailored cover letter for a role, company, and background.

Draft job descriptions with responsibilities, requirements, and benefits.

Create structured meeting agendas with goals, topics, owners, and timing.

Turn discussion notes into concise meeting minutes and action items.

Generate a project brief with goals, scope, timeline, stakeholders, and risks.

Create a SWOT analysis from a company, product, or project idea.

Generate brandable business name ideas from keywords and industry.

Generate short slogans and taglines for brands, products, or campaigns.

Write ecommerce product descriptions with benefits, features, and CTA.

Generate frequently asked questions and answers from a topic or product.

Generate email subject lines for campaigns, newsletters, and outreach.

Draft a press release for a launch, announcement, or milestone.

Create a practical business plan outline for startup or project planning.

Generate a client proposal structure with scope, deliverables, timeline, and pricing.

Generate creative brand and business name ideas by combining prefixes, suffixes, and industry keywords. Filter by style and length.

Inspect file name, type, size, extension, and last modified date in your browser.

Convert bytes, KB, MB, GB, and TB with decimal and binary units.

Generate clean, SEO-friendly file names from messy names or titles.

Preview safe file-extension changes before renaming files.

Find duplicate file names from a pasted list and prepare cleanup actions.

Review archive file size, type, and extraction checklist before uploading or sharing.

Trim whitespace, remove empty lines, and deduplicate CSV rows locally.

Extract selected columns from CSV text by column name or index.

Estimate target bitrate and reduction ratio for video compression.

Calculate video file size from duration, bitrate, audio bitrate, and frame rate.

Generate thumbnail text, composition, contrast, and hook ideas for videos.

Plan audio trim ranges and export notes before editing.

Estimate audio size from duration, bitrate, channels, and format.

Inspect audio file name, type, size, and browser-readable metadata.

Validate SRT numbering, timestamps, empty blocks, and common subtitle issues.

Clean transcripts by removing filler words, repeated spaces, and timestamp noise.

Browser-based video editor with basic trim, cut, and merge functions.

Merge multiple video clips into one video file.

Trim video to remove unwanted start and end sections.

Add background music or voiceover to your video.

Overlay text, titles, and captions on video frames.

Crop video to a specific aspect ratio or region.

Resize video resolution for different platforms.

Create seamless looping videos.

Adjust, mute, or boost video audio levels.

Speed up or slow down video playback.

Reduce camera shake and smooth video motion.

Convert video clips to animated GIF images.

Play video in reverse for creative effects.

Combine multiple videos into split-screen layouts.

Create video slideshows from photos with music.

Record your screen, webcam, or browser tab.

Record video and take photos from your webcam directly in the browser.

Reduce video file size while maintaining quality.

Extract thumbnails from video files at any timestamp. Seek through the video and capture high-quality frames as PNG images.

Trim audio files to remove unwanted sections.

Adjust, normalize, or boost audio volume.

Change audio playback speed without pitch shift.

Shift audio pitch up or down.

Adjust bass, mid, and treble frequencies.

Reverse audio playback for creative effects.

Record audio directly from your microphone.

Combine multiple audio tracks into one file.

Reduce background noise from audio recordings.

Convert between MP3, WAV, OGG, and other formats.

Normalize audio volume levels using peak normalization and LUFS loudness analysis. Process files entirely in your browser.

Convert PDF documents to editable Word format.

Extract tables from PDF to Excel spreadsheets.

Convert PDF pages to PowerPoint slides.

Convert multiple images into a PowerPoint presentation.

Combine multiple PowerPoint presentations into one.

Convert PDF content to clean HTML markup.

Convert Word documents to PDF format.

Convert Excel spreadsheets to PDF format.

Convert PowerPoint presentations to PDF.

Rotate PDF pages to the correct orientation.

Add text or image watermarks to PDF pages.

Add page numbers to PDF documents.

Add password protection to PDF files.

Remove password protection from PDF files.

Extract text from scanned PDF images.

Fill out PDF forms digitally.

Create interactive PDF forms with text fields, checkboxes, dropdowns, radio groups, and option lists.

Compare two PDF documents side by side.

Translate text between languages with AI-powered accuracy.

Create custom memes with text overlays.

Generate simple logo designs from text and shapes.

Create custom icons and favicons.

Generate seamless patterns and textures.

Create procedural textures for design projects.

Create quick wireframes for UI/UX design.

Create visual inspiration boards for projects.

Preview and compare font pairings.

Create device mockups for showcasing designs.

Create web banners and social media covers.

Create video thumbnails and preview images.

Convert between numeric and symbolic chmod permissions.

Convert Docker run commands to docker-compose.yml.

Quick reference for common Git commands and workflows.

Visual HTML editor with live preview.

Generate signed JWT tokens with custom payloads.

Look up vendor information from MAC address prefixes.

Calculate subnet masks, ranges, and broadcast addresses.

Generate Base64-encoded Basic Authentication headers.

Generate ULIDs (Universally Unique Lexicographically Sortable Identifiers).

Encrypt and decrypt text using AES algorithm.

Generate RSA public/private key pairs.

Analyze password strength and estimate crack time.

Generate SHA-256, SHA-1, SHA-384, SHA-512, and MD5 hashes from any text. Compare hashes for integrity verification.

Encrypt and decrypt text using AES-256-GCM with a password. Uses PBKDF2 key derivation for strong security.

Generate BIP39 mnemonic phrases for crypto wallets.

Convert text to NATO phonetic alphabet.

Generate numeronyms like i18n, k8s, a11y.

Obfuscate strings for code protection.

Calculate estimated time of arrival based on speed and distance.

Run JavaScript performance benchmarks in browser.

Simple countdown timer with alerts.

Normalize and validate email addresses.

Parse and validate international phone numbers.

Generate valid IBAN numbers for testing.

Remove watermarks and logos from videos right in your browser: draw regions, choose from smart inpaint, Gaussian blur, mosaic, or solid fill, and process multiple areas at once — no uploads.

Overlay images, stickers, and logos onto video frames.

Convert video format presets for MP4, WebM, MOV, and more.

Edit videos from transcript timelines and clip ranges.

Extract audio from video and transcribe speech to text using local AI (Whisper).

Create brand colors, typography, logo usage, and asset rules.

Separate vocal and instrumental tracks with an AI-assisted workflow.

Transcribe spoken audio into text using local AI (Whisper).

Edit title, artist, album, genre, and cover metadata plans.

Create ringtone cut ranges and export presets for phones.

Generate waveform visualization settings for audio clips.

Plan podcast chapters, cuts, intro/outro, and metadata.

Plan text edits, replacement ranges, and PDF export notes.

Plan image replacement, extraction, and layout fixes for PDFs.

Add a digital or visual signature workflow to PDF documents.

Extract image inventory and export instructions from PDF files.

Extract text strategy and cleanup rules for PDF documents.

Reorder, delete, insert, and split PDF page plans.

Annotate PDFs with highlights, drawings, text, shapes, and signatures. Full-featured browser-based PDF editor.

Create PDF page crop boxes and margin adjustment settings.

Diagnose common PDF issues and generate repair steps.

Remove image backgrounds with an AI-assisted workflow.

Enhance image clarity, color, and resolution settings.

Plan horizontal, vertical, or grid image stitching layouts.

Extract text from images and clean OCR output.

Preview filter recipes for brightness, contrast, blur, and tone.

Convert icon size and format presets for favicon and apps.

Compare two images with visual diff settings and checklist.

Create ID/passport photos with background replacement and compliance check.

Crop photos to standard ID photo sizes (1-inch, 2-inch, passport).

Online beauty photo editor with skin smoothing, filters, and AI retouch.

Build a step-by-step encoding, decoding, and transform pipeline.

Detect possible formats from pasted data signatures.

Create reusable tool recipes and shareable workflow notes.

Inspect and edit hexadecimal byte strings in the browser.

Measure randomness and encoded data entropy.

Inspect file signatures and magic bytes.

Parse certificate fields and validity checklist.

Draft WebSocket connection, message, and event tests.

Summarize tabular data with pivot table dimensions and metrics.

Generate chart configuration from CSV or table data.

Validate JSON data against schema rules.

Create study flashcards from terms and definitions.

Write and preview LaTeX equation snippets.

Generate Sudoku puzzles and solution grids.

Generate simple maze layouts with size options.

Free alternative to Zapier for automation.

Build n8n automation workflow templates.

Test and debug webhook endpoints.

Build reusable workflow recipes.

Convert form data to PDF documents.

Monitor websites for content changes.

Convert RSS feeds to newsletter format.

Convert API responses to spreadsheet format.

Monitor and manage cron job schedules.

Plan task automation workflows and triggers.

Find open-source alternatives to paid tools.

Track GitHub repository star growth over time.

Generate GitHub README files for your projects.

Check open-source license compatibility.

Generate Docker Compose configuration files.

Find self-hosted alternatives to cloud apps.

Check the health and quality of GitHub repositories.

Security checklist for open-source projects.

Find free alternatives to Notion.

Find free alternatives to Figma.

Free alternative to Grammarly for writing.

Free alternative to Cursor AI code editor.

Free alternative to Ahrefs for SEO analysis.

Free alternative to Smallpdf for PDF tasks.

Free alternative to iLovePDF for PDF tasks.

Free alternative to Canva for design.

Free alternative to Calendly for scheduling.

Generate Notion templates for productivity.

Summarize meeting notes into key points.

Generate OKR goals for teams and individuals.

Plan and organize Kanban board workflows.

Generate standard operating procedure documents.

Create team retrospective board templates.

Free Roadmap Generator for planning, comparing, generating, and improving online workflows with privacy-first ToolPure pages.

Generate detailed customer personas for marketing.

Chain multiple tools into reusable

Track daily habits with check-in, streak counting, and weekly calendar view. All data stored locally in your browser.

Analyze pricing pages for optimization insights.

Calculate SaaS pricing tiers and revenue.

Calculate Monthly Recurring Revenue metrics.

Calculate customer churn rate and impact.

Calculate LTV:CAC ratio for your business.

Calculate return on investment metrics.

Convert between currencies with live rates.

Calculate salary, taxes, and take-home pay.

Calculate monthly mortgage payments including principal, interest, taxes, and insurance. Compare 15-year vs 30-year loan terms.

Calculate tax amounts for invoices.

Compare pricing across popular AI tools.

Find the right AI tool for your task.

Browse and manage a library of reusable AI prompts.

Build and configure AI agent workflows.

Calculate token costs for LLM API calls.

Describe what you need in plain language and AI recommends the best tool chain. No more searching — just tell us what you want to do.

Browse and search MCP server directory.

Checklist for preventing API key leaks.

Check privacy policy compliance requirements.

Check GDPR cookie compliance for your website.

Check your visibility in AI-powered search results.

Generate schema markup for SEO.

Preview how your page appears in search results.

Generate trending hashtags for TikTok.

Convert HEIC/HEIF photos from iPhone to JPG — 100% local, no upload.

Strip EXIF metadata (GPS, camera info) from photos for privacy — 100% local.

Extract text from PDF and convert to Markdown for LLM/RAG — 100% local.

Generate beautiful color palettes for your designs.

Sharpen images to improve clarity and detail.

Convert images to Base64 encoded strings for embedding in HTML/CSS.

View EXIF metadata from photos including camera, GPS, and exposure info.

Simulate how images look under different types of color blindness.

Calculate MD5, SHA-1, SHA-256 hashes of files and text.

Convert between storage units (bytes, KB, MB, GB, TB, PB).

Calculate download/upload time based on file size and bandwidth.

Estimate upload time based on file size and connection speed.

Calculate required bitrate and storage for video streaming.

Convert between pixels, DPI, PPI, and print dimensions.

Calculate compound interest with customizable periods and rates.

Generate professional contracts and agreements.

Generate Non-Disclosure Agreements (NDA).

Generate structured reports from data.

Generate certificates and awards with customizable templates.

Generate formal and business letters with templates.

Create quizzes and tests with scoring.

Convert JSON data to XML format with proper element mapping.

Edit JSON data visually with tree view, inline editing, and validation.

Sort JSON object keys alphabetically or recursively.

Validate and parse JSON5 files that support comments and trailing commas.

View and explore JSON data with collapsible tree visualization.

Clean and repair broken JSON by fixing syntax errors and removing invalid values.

Decode and inspect JWT tokens, view header, payload, and signature.

Compare two JSON objects and highlight structural and value differences.

Generate SQL INSERT statements from JSON data.

Convert SQL CREATE TABLE and INSERT statements to JSON.

Convert JSON object to URL GET query parameters.

Convert XML data to JSON format with attribute handling.

Convert JSON to Java class definitions with proper types.

Convert JSON to C# class definitions with proper types.

Convert JSON to Python dataclass definitions.

Convert JSON to TypeScript interface and type definitions.

Convert JSON to JavaScript object and class definitions.

Convert JSON to Go struct definitions with JSON tags.

Convert JSON to Dart class definitions with serialization.

Convert JSON to PHP array and class definitions.

Convert JSON to Swift struct definitions with Codable.

Convert JSON to Kotlin data class definitions.

Convert JSON to Rust struct definitions with serde derive.

Convert JSON to C++ class definitions with serialization.

Convert JSON to Objective-C interface and implementation.

Convert JSON to Ruby class definitions.

Convert JSON to Elm type definitions and decoders.

Convert JSON to Postman collection with request items.

Convert Excel (.xlsx) files to JSON format in the browser.

Create animated GIFs from image sequences — 100% local, no upload.

Make photo collages with 6 layouts (2x2, 3x3, horizontal, vertical, 1+2, 1+3) — 100% local.

Permanently redact sensitive text in PDFs by keyword or full page — 100% local.

Edit Excel and CSV files in-browser with live table editing — 100% local.

View, add, edit, delete, and flatten PDF bookmarks/outlines. Export PDF pages as SVG. Uses pdf-lib and pdf.js for local processing.

Basic video editing: trim, rotate, add text overlay, add image watermark. Uses ffmpeg.wasm for local browser-based processing.

Auto format and beautify text content.

Add spaces between Chinese and English characters.

Batch add prefix and suffix to each line.

Insert characters at the Nth position in text.

Add spaces between every character.

Add special symbols around text.

Add or remove line numbers from text.

Split article into individual sentences.

Repeat text multiple times with options.

Reverse text characters or lines.

Convert text to vertical layout.

Pad text to fixed length with characters.

Remove content inside brackets.

Generate all combinations from multiple texts.

Merge two texts and remove duplicates.

Keep only duplicate lines from text.

Show difference lines between two texts.

Remove all empty lines from text.

Remove all spaces from text.

Convert numbers to English amount words.

Convert numbers to Chinese RMB amount.

Convert text to binary and back.

Convert text to hexadecimal and back.

Batch convert text case formats.

Convert between time units easily.

Convert Chinese characters to Pinyin.

Convert between full-width and half-width.

Convert numbers to Chinese characters.

Convert between Simplified and Traditional Chinese.

Convert text to Mars text style.

Convert numbers between different bases.

Convert IPv4 address to IPv6.

Convert escape codes and special characters.

Convert text to Unicode and back.

Encrypt and decrypt text with DES algorithm.

Generate SHA1 hash of text.

Generate SHA256 hash of text.

Generate MD5 hash for multiple texts.

Generate LRC checksum for text.

Encrypt text with MagicCrypt algorithm.

Multi-function text encryption toolkit.

Filter lines containing specific keywords.

Extract URLs from text.

Extract email addresses from text.

Extract phone numbers from text.

Extract IP addresses from text.

Extract domain names from text.

Validate Chinese ID card numbers.

Highlight keywords in text.

Extract numbers from text.

Extract license plate numbers from text.

Extract MAC addresses from text.

Extract account names from text.

Extract image URLs from text.

Extract Chinese text from mixed content.

Extract English names from text.

Extract Chinese names from text.

Count occurrences of keywords in text.

Generate GUID identifiers.

Generate random MAC addresses.

Generate IP address ranges.

Compress and decompress text with Gzip.

Randomly shuffle the order of text lines.

Sort text lines alphabetically (A-Z or Z-A).

Sort lines by character length.

Sort lines by numeric values.

Reverse the order of all lines.

Comprehensive text statistics: chars, words, lines, bytes, reading time.

Count frequency of each character in text.

Count frequency of each line.

Compare two texts line by line and show differences.

Find lines present in both texts.

Combine unique lines from both texts.

Find lines in text A but not in text B.

Generate a sequence of numbers with start, end and step.

Trim leading/trailing whitespace from each line.

Remove all special symbols, keep only letters, digits and Chinese.

Remove all numeric digits from text.

Remove all English letters from text.

Remove line numbers at the start of each line.

Collapse multiple consecutive empty lines into one.

Delete lines containing (or not containing) keywords.

Delete first N characters from each line.

Delete last N characters from each line.

Keep only first N characters from each line.

Keep only last N characters from each line.

Append a specified string to the end (right side) of every line.

Split text into columns by delimiter.

Merge multiple columns into one text.

Swap two columns in tabular text.

Find common values between two columns.

Extract a specific column from tabular text.

Merge lines from text A and B with separator.

Format and beautify HTML with indentation.

Format CSS with proper indentation and line breaks.

Convert special characters to/from HTML entities.

Escape HTML special characters.

Remove all HTML/XML tags from text.

URL encode or decode text.

Encode or decode text using Base32 (RFC 4648).

Convert text to ASCII decimal, hex or octal codes.

Keep or remove lines based on character count.

Split text into fixed-length chunks.

Cross-merge lines from two texts alternately.

Clone each line N times.

Add sequential numbers to each line.

Convert between string and JSON array.

Generate numbers in a specified range.

Generate random Chinese names locally.

Generate random English names locally.

Check JPEG chroma subsampling (4:2:0, 4:2:2, 4:4:4) to verify image quality before uploading — 100% local.

Compare two images pixel by pixel with diff highlighting. Supports overlay, side-by-side, and slider modes — 100% local.

Build cron expressions visually with calendar preview and human-readable description — 100% local.

Edit and validate .env files with syntax checking, duplicate detection, and sensitive info highlighting — 100% local.

Analyze CSV data with auto statistics, distribution charts, and filtering. No login required — 100% local.

Scan QR codes from images or camera. Supports URL, text, WiFi, vCard detection — 100% local, no upload.

Extract dominant color palettes from images. Export as CSS variables, Tailwind config, or JSON — 100% local.

Validate sitemap XML structure, check URLs, detect errors, and analyze URL statistics — 100% local.

Combine multiple images into a CSS sprite sheet with auto-generated CSS code. Supports @2x and ZIP export — 100% local.

Convert between CSS units (px, rem, em, vw, vh) with custom base values. Supports batch conversion.

Check image DPI/PPI resolution for print readiness. Supports JPEG, PNG, TIFF, and BMP — 100% local.

Convert HTML tables to Markdown, CSV, or JSON. Paste HTML source or rich text — 100% local.

Convert numbers between binary, octal, decimal, and hex with interactive bit-level visualization.

Visualize nested JSON structures as an interactive, collapsible tree. Expand and collapse nodes to explore complex data hierarchies in your browser.

Check Google Core Web Vitals (LCP, CLS, INP) for any URL using Chrome UX Report data.

Remove watermarks from images using color-based selection or region inpainting — 100% local.

Adjustable metronome with BPM control (20-300), time signatures, accent beats, and a visual pendulum indicator. Practice with precise timing.

Calculate musical intervals between two notes. Get interval name, semitone count, and consonance level. Supports reverse calculation.

Select a root note and scale type (major, minor, pentatonic, blues, etc.) to see scale notes and piano keyboard visualization.

Playable virtual piano keyboard using mouse or keyboard keys. Supports recording short snippets and playback.

Generate chord progressions by key and style (pop, jazz, rock, classical). Play chords with audio preview and export as text.

Generate standard A4=440Hz or custom frequency pure tones. Supports sine, square, triangle, and sawtooth waveforms with volume control.

Tap along with music to calculate average BPM. Displays tempo terminology (Allegro, Andante, etc.) based on the detected speed.

Real-time chromatic tuner using microphone input. Displays note name and deviation in cents. Supports guitar, violin, ukulele, and piano modes.

Convert between numbered musical notation (Jianpu) and staff notation. Draws staff lines and notes on canvas for visual reference.

Practice ear training with random intervals, chords, and scales. Guess the answer and track accuracy statistics with difficulty progression.

Calculate Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation based on age, gender, weight, and height.

Calculate Total Daily Energy Expenditure (TDEE) by multiplying BMR with an activity factor. Estimate daily calorie needs.

Estimate body fat percentage using the Navy method or BMI-derived formula. Input neck, waist, and hip measurements.

Calculate ideal weight range using Devine, Robinson, or Miller formulas. Based on height and gender.

Estimate due date using Naegele's rule (last menstrual period + 280 days). Also shows trimester milestones.

Predict ovulation and fertile window based on menstrual cycle length and last period date.

Calculate recommended daily water intake based on body weight and activity level. Results in liters and ounces.

Estimate your one-rep max (1RM) for bench press, squat, or deadlift using Epley or Brzycki formulas.

Generate printable receipts and invoices by filling in fields. Export as PDF or image for business records.

Create a will template by filling in personal information and asset distribution preferences.

Generate a power of attorney document specifying the agent and authorized actions.

Resize images to optimal dimensions for Instagram, Facebook, Twitter, LinkedIn, and other social platforms.

Calculate social media engagement rate using likes, comments, shares, and follower count. Compare performance metrics.

Score email subject lines based on length, keywords, emoji usage, and best practices. Improve open rates.

Generate call-to-action button copy based on product, audience, and goal. Get conversion-optimized CTA text.

Generate academic citations in APA, MLA, Chicago, and GB/T 7714 formats. Enter source details and get formatted references.

Compare two text passages for similarity. Calculate overlap percentage and highlight matching sections locally in your browser.

Pomodoro-style study timer with customizable focus and break intervals. Track daily study sessions with local statistics.

Calculate weighted GPA across multiple courses. Supports 4.0, 5.0, and percentage grading scales.

Calculate overall grade based on weighted assignments, exams, and quizzes. See what score you need on remaining assessments.

Split a list of names into random teams or groups. Useful for classrooms, workshops, and team-building activities.

Countdown timer for presentations and speeches. Set time limits for sections and get visual/audio warnings.

Split restaurant bills including tip. Calculate each person's share based on total, number of people, and tip percentage.

Compare debt avalanche vs snowball payoff strategies. See timeline, total interest, and monthly payments for each approach.

Calculate how long it will take to reach a savings goal. Input target amount, monthly savings, and interest rate.

Calculate personal net worth by summing assets and subtracting liabilities. Track wealth over time.

Calculate average cost per share for multiple stock purchases. Determine break-even price and total investment.

Generate geometric SVG patterns with customizable parameters. Export as SVG code for backgrounds and textures.

Check a website's favicon size, format, and availability. Detect missing or improperly sized icons.

Calculate dimensions for common aspect ratios (16:9, 4:3, 1:1, 9:16). Enter width or height to get the other value.

Convert between print resolution (DPI/PPI) and pixel dimensions. Calculate required pixels for a given print size and quality.

Upload a photo and add festive holiday overlays. Create profile pictures with Christmas, New Year, Halloween and more themes.

Generate personalized holiday greetings and wishes. Choose from Christmas, New Year, Chinese New Year, Thanksgiving and more.

Design and download custom holiday greeting cards with festive themes, colors, and your own message.

Enter participant names and randomly pair gift givers. Ensures no one gets themselves. Perfect for Christmas and holiday parties.

Plan your holiday gift list with budget tracking. Add recipients, items, and costs to stay within your spending limit.

Count down the days, hours, minutes and seconds until your favorite holidays. Supports Christmas, New Year, Easter and more.

Estimate calories burned during common activities including running, cycling, walking, and swimming. Based on MET values.

Calculate your daily macronutrient needs (protein, carbs, fat) based on your goals — weight loss, maintenance, or muscle gain.

Plan your weekly meals with a simple interface. Track breakfast, lunch, dinner and snacks for each day of the week.

Find the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed and aligned with your circadian rhythm.

Calculate your Body Mass Index (BMI) using metric or imperial units. See your BMI category and healthy weight range.

Calculate monthly mortgage payments including principal, interest, taxes, and insurance. Compare 15-year vs 30-year loan terms.

Calculate monthly payments for personal or auto loans. See total interest paid and a full amortization schedule.

Generate a complete amortization schedule showing each payment's breakdown into principal and interest over the loan term.

Compare the total cost of renting vs buying a home. Factor in mortgage, taxes, maintenance, rent and more for a data-driven decision.

Estimate how much you need to save for retirement. Enter your current savings, monthly contribution, and target retirement age.

Create a personal budget by tracking income and expenses across categories. See your monthly surplus or deficit at a glance.

Estimate your take-home pay after federal and state taxes. Calculate net pay, withholding amounts, and FICA deductions.

Calculate sales tax amounts for US states and international rates. Enter the price and tax rate to get the total including tax.

Calculate monthly student loan payments, total interest, and repayment timelines. Supports standard and income-driven repayment plans.

Generate a basic lease/rental agreement template with landlord and tenant information, terms, and conditions.

Create a bill of sale document for vehicle, equipment, or personal property transactions. Includes buyer, seller, and item details.

Generate uncontested divorce papers template with basic information including spouse details, marital property, and agreements.

Solve quadratic equations, linear equations, and other math problems step by step. Shows the solution process.

Calculate force, velocity, acceleration, kinetic energy, and other physics formulas. Supports SI units and common conversions.

Balance chemical equations by adjusting coefficients. Enter reactants and products to get the balanced equation.

Check English text for common grammar, spelling, and punctuation issues. Get suggestions for clearer writing.

Generate random vocabulary quizzes from a word list. Test your knowledge with multiple-choice or fill-in-the-blank questions.

Track your essay writing time with a built-in timer. Monitor word count, typing speed, and stay focused on your writing task.

Identify world flags by browsing through countries. Learn flag designs, colors, and national symbols from around the world.

Browse and identify car logos from major automotive brands worldwide. Learn about vehicle emblems and manufacturer symbols.

Calculate days between two dates, add or subtract days from a date, and find the day of the week for any date.

Randomly scramble the letters in each word of your text. Creates fun, jumbled text for puzzles or word games.

Quick reference for all HTTP status codes with descriptions, categories, and usage examples.

Comprehensive regular expression cheatsheet with common patterns, syntax reference, and live testing.

Browse named CSS colors with HEX, RGB, and HSL values. Search and copy color codes instantly.

Quick reference for common keyboard shortcuts across Windows, Mac, and Linux.

Search and browse thousands of emojis by category, keyword, or meaning. Copy with one click.

Convert time between time zones worldwide. See current time in multiple cities simultaneously.

Quick reference for ISO country codes, calling codes, currency codes, and capitals worldwide.

Quick reference for HTML tags and attributes with descriptions, examples, and browser support.

Comprehensive CSS properties reference with syntax, values, examples, and browser support.

Essential Git commands cheatsheet with common operations, branching, merging, and troubleshooting.

Markdown syntax cheatsheet with formatting examples for headings, lists, code, tables, and more.

JWT structure explanation with header, payload, signature reference and common use cases.

Look up domain registration information including owner, registrar, creation date, and expiry.

Check if your email or phone number has been exposed in known data breaches.

Detect your browser fingerprint including canvas, WebGL, fonts, and device characteristics.

Generate a temporary disposable email address to protect your privacy and avoid spam.

Trace the network route from your device to a target host, showing each hop and latency.

Preview your website on different device screen sizes including mobile, tablet, and desktop.

Expand shortened URLs to see the final destination and check for redirects before clicking.

View archived snapshots of any webpage from the Wayback Machine and internet archives.

View and analyze HTTP Archive (HAR) files to inspect network requests and responses.

Discover subdomains for any domain using DNS enumeration and certificate transparency logs.

View HTTP response headers for any URL, including security headers and caching directives.

View the HTML source code of any webpage with syntax highlighting and formatting.

Look up postal codes and zip codes for countries worldwide with area information.

Search SWIFT/BIC codes for international bank transfers with branch details.

Validate European VAT numbers and verify company tax registration status.

Remove unwanted pages from PDF documents and save the result as a new file.

Scan documents using your camera with edge detection and perspective correction to PDF.

Generate professional price quotes and estimates with customizable templates.

Create and design professional business cards with customizable templates and export.

Generate professional letterheads with your company branding and contact information.

Create professional purchase orders with item details, quantities, and pricing.

Calculate monthly installment payments for loans with interest rates and terms.

Calculate the number of business days between two dates, excluding weekends and holidays.

Convert angles between degrees, radians, gradians, and turns with instant results.

Calculate area, perimeter, and volume for common geometric shapes and solids.

Check spelling in your text with suggestions for corrections. Supports English language.

Test your typing speed and accuracy with timed exercises. Measure WPM and error rate.

Find synonyms, antonyms, and related words for any term with an integrated thesaurus.

Write and edit Markdown with live preview, syntax highlighting, and export options.

Preview fonts with custom text samples, adjustable size, and Google Fonts integration.

Apply cartoon and artistic effects to your photos with edge detection and color quantization.

Check color contrast ratios for WCAG accessibility compliance (AA and AAA standards).

Compress audio files to reduce size while maintaining quality. Supports MP3, WAV, OGG.

Convert MIDI files to sheet music notation and other musical formats.

Calculate your heart rate zones for optimal training based on age and resting heart rate.

Calculate running pace, speed, and estimated finish time for any distance.

Calculate medication dosage based on weight, age, and drug-specific factors.

Test your vision with Snellen chart, color blindness test, and astigmatism screening.

Predict the adult height of a child based on parents height and growth patterns.

Interactive periodic table with element properties, atomic data, and chemical information.

Draw tarot cards and get interpretations for love, career, and personal growth.

Generate character names for RPGs, fantasy stories, and roleplay games.

Find baby names by origin, meaning, and gender with popularity rankings.

Create custom crossword puzzles from your own word lists and clues.

Create Gantt charts for project management with task timelines and dependencies.

Browse holidays and festivals from countries worldwide with dates and descriptions.

Discover your MBTI personality type with this free 16-personality test. No signup required.

Take the scientifically validated Big Five (OCEAN) personality test online for free.

Find your Enneagram type among 9 personality types. Free online test.

Find your zodiac sign by birth date. Learn about your star sign traits and characteristics.

Check zodiac sign compatibility for love and relationships. Free compatibility checker.

Get your free daily horoscope based on your zodiac sign. Updated daily.

Calculate your life path number and destiny number from your birth date.

Assess your stress level with this quick psychological test. Free and private.

Discover your love language with the 5 love languages test. Improve your relationships.

Test your emotional intelligence (EQ) with this free online assessment.