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Base64 변환기

Base64를 온라인에서 무료 인코드/디코드. 텍스트와 파일을 Base64로 양방향 변환. 데이터 URI 생성, URL 안전 인코딩 지원. 프라이버시 보장.

Base64 변환기 is a free online 개발 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.

개발자를 위한 코드 도구로, 구문 강조, 실시간 검증, 포맷팅 기능을 제공합니다. JSON, XML, YAML, SQL 등 주요 형식을 전면 지원합니다.

도구 로딩 중...

How to use

  1. 1 Base64 변환기 도구 페이지를 엽니다.
  2. 2 텍스트, URL 또는 데이터를 입력 영역에 붙여넣으세요.
  3. 3 작업 모드와 매개변수를 선택하세요.
  4. 4 도구를 실행하고 결과를 확인합니다.
  5. 5 결과를 복사하거나 다운로드하세요.

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 변환기: 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.

자주 묻는 질문

이 도구는 무료인가요?

네, 가입 없이 완전 무료입니다.

모바일에서 사용할 수 있나요?

네, 모바일 브라우저에서 터치를 지원합니다.

어떤 카테고리에 속하나요?

개발

어떤 프로그래밍 언어 형식을 지원하나요?

JSON, XML, YAML, SQL, CSV, TOML 등을 지원하며, Java, Python, TypeScript 등의 코드 형식 변환도 지원합니다.

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 변환기 safe? Is my data uploaded or stored?

Yes. Base64 변환기 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.

관련 도구

JWT 디코드 Decode and inspect JWT tokens, view header, payload, and signature. HTML 인코더 Encode and decode HTML entities for special characters. Free online HTML encoder to escape tags, symbols, and attributes safely. URL 인코더 Encode and decode URL strings to proper percent-encoding format. Free online URL encoder for safe web addresses and query parameters. Base64 파일 인코더 Encode files to Base64 strings for embedding in JSON and HTML. Free online file to Base64 converter for data URIs. 텍스트 Codec (Binary/16진수/이스케이프/Unicode) Convert text to/from Binary, Hex, Escape encoding, and Unicode formats in one tool. Free online developer tool — browser-based, no upload. HTML 엔티티 Convert special characters to and from HTML entities. Free online tool to escape markup in your browser. URL 인코드 디코드 Encode and decode URL strings with percent-encoding for safe transmission. Free online URL encoder and decoder for web params. JWT 인코더 Encode and generate JWT tokens with custom headers and payloads. Free online JWT encoder for authentication testing.

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