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Base64 Conversor

Codifica y decodifica Base64 online gratis. Convierte texto y archivos a Base64 y viceversa. Generación de URI de datos, codificación segura para URL.

Base64 Conversor is a free online desarrollador tool that works right in your browser — whatever you enter is processed locally and never sent to a server. No installation, no signup; works on both phone and desktop, ready to use instantly.

Herramientas de código diseñadas para desarrolladores con resaltado de sintaxis, validación en tiempo real y formateo. Cobertura completa de JSON, XML, YAML, SQL y más.

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How to use

  1. 1 Abre la página de la herramienta Base64 Conversor.
  2. 2 Pega tu texto, URL o datos en el área de entrada.
  3. 3 Elige el modo de operación y los parámetros.
  4. 4 Ejecuta la herramienta y revisa el resultado.
  5. 5 Copia o descarga el resultado.

Why we built this tool

As developers ourselves, we kept switching between scattered tools that sent our code to unknown servers. We built this developer suite so formatting, validation, and conversion all run locally — your code stays yours.

About Base64 Conversor: what you should know

Developers handling JWTs, SSO tokens, binary data in web contexts, or email attachments. Base64 is everywhere in modern web stacks — it encodes OAuth client secrets, data URIs for inline images, and file uploads to APIs that expect string payloads instead of multipart form data.

Key features

  • Text ↔ Base64 with UTF-8 Awareness — Unicode characters, emoji, and accented letters all encode and decode correctly. Traditional ASCII-only converters silently corrupt non-English strings — this one handles the full UTF-8 range.
  • File-to-Base64 Data URI — Drag an image or document and get a complete `data:image/png;base64,...` string ready to paste directly into HTML or CSS. Useful for embedding small assets without an extra network round-trip.
  • JWT Header Payload Inspector — Paste a JWT token and instantly see the decoded header and payload JSON — great for quickly verifying which claims (issuer, expiry, audience) are present without spinning up a JWT debugging service.

Common use cases

  • Building Data URI Inline Assets — Inline small SVG icons or favicons into a single CSS file to reduce HTTP requests during initial page load. Base64-encode the file first, then wrap it with the correct data URI prefix.
  • Encoding OAuth Client Secrets — Many OAuth providers send client_id:client_secret pairs as Base64-encoded Basic Auth credentials. Encode the pair on this tool before hitting the /token endpoint — saves you from wrestling with curl headers manually.

Preguntas frecuentes

¿Es gratuita esta herramienta?

Sí, completamente gratuita y sin registro.

¿Puedo usarla en el móvil?

Sí, funciona en navegadores móviles con soporte táctil.

¿A qué categoría pertenece?

Desarrollador

¿Qué formatos de lenguajes de programación son compatibles?

Soporta JSON, XML, YAML, SQL, CSV, TOML y más, además de conversión de formato de código para Java, Python, TypeScript, etc.

What code and data formats are supported for formatting and validation?

ToolPure supports JSON, XML, YAML, TOML, CSV, SQL, and Markdown formatting. Validation includes syntax checking, schema validation for JSON, and well-formedness checking for XML.

Can I convert between different data formats?

Yes, you can convert between JSON, XML, YAML, CSV, and TOML. The converter preserves data types, nested structures, and array indices during conversion.

Is there a file size limit for code formatting?

Files up to 10MB can be formatted without issues. For larger files, the tools use Web Workers to prevent UI freezing. Syntax highlighting supports files with up to 100,000 lines.

Is Base64 Conversor safe? Is my data uploaded or stored?

Yes. Base64 Conversor is a pure front-end tool: whatever you type or paste is processed only in your browser's memory and never sent to a server. It disappears as soon as you refresh or close the page.

🔒 Privacy & Security：All processing happens locally in your browser. Files are never uploaded or stored.

🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.

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