代码与数据

JSON、Base64、slug 和 camelCase 都在这个标签页里，粘贴内容不上传。

Start here if you are debugging

网址用 kebab-case。JavaScript 用 camelCase。Python 和 SQL 用 snake_case。

Developer naming styles

MD5 是校验和，不是密码哈希。

Privacy for proprietary snippets

Standard formatters run in your browser after the page loads. That is useful on locked-down laptops where you cannot install CLI utilities but still need to inspect a customer payload or internal config sample.

JSON tools cluster

Working only with JSON today? Browse the dedicated JSON tools hub for the formatter, editor, stringify, unstringify, escape, CSV, and YAML converters—each page explains a different task.

Tools in this category

JSON Formatter

Pretty-print messy JSON, catch syntax issues, or minify for production—all in one free online tool.

JSON Editor

Edit JSON in dual tree, text, and table panes: repair, transform, compare, validate with a schema, and import CSV—fully local.

HTML Formatter

Clean up copied HTML: consistent indentation, readable structure, optional minify.

CSS Formatter

Turn messy CSS into readable, indented code—or minify it for faster pages.

JavaScript Formatter

Beautify messy JavaScript with proper indentation—or minify for deploy.

Markdown Formatter

Fix inconsistent Markdown spacing and structure, then preview how it reads.

Regex Tester

Paste a pattern and text, see matches and captures.

JSON Stringify

Paste plain text, get a quoted JSON string with escapes.

JSON Unstringifier

Turn a JSON.stringify() result back into readable text, or stringify text for embedding in JSON.

JSON Escape / Unescape

Turn raw text into safe JSON strings or reverse escaped JSON.

JSON to YAML Converter

Convert JSON to YAML in your browser.

CSV to JSON Converter

Turn spreadsheet-style CSV into JSON instantly.

JSON to CSV Converter

Turn an array of JSON objects into spreadsheet CSV, or CSV rows back into JSON, in the browser.

HTML to Markdown

Convert HTML to Markdown or Markdown to HTML instantly.

SCSS Formatter

Clean up nested SCSS for readability.

TypeScript Formatter

Clean up TypeScript and TSX snippets: consistent braces, spacing, and line breaks before code review or paste into docs.

XML Formatter

Format or minify XML for RSS, SOAP, SAML, SVG, Android layouts, and sitemap files.

YAML Formatter

Clean up Docker Compose, CI configs, and data files.

Markdown Table Generator

Build Markdown tables from a spreadsheet-style grid.

GraphQL Formatter

Indent and clean GraphQL operations and SDL.

Slugify URL Generator

Paste a headline, get a clean slug for blogs and SEO.

Base64 Encode & Decode

Encode strings to Base64 or decode Base64 payloads back to plain text—ideal for JWT segments, API testing, and quick debugging.

URL Encode & Decode

Fix broken links and special characters in URLs.

UTF-8 Encoder/Decoder

See UTF-8 byte sequences or recover text from encoded data.

Hex to Text Converter

Convert hex strings to readable text or text to hex.

Binary Code Translator

Encode text as binary or decode binary back to text.

Morse Code Translator

Translate letters to Morse and Morse to text.

A1Z26 Cipher

Encode or decode the A1Z26 cipher (A=1 … Z=26).

Caesar Cipher

Shift letters to encode or decode messages.

ROT13 Encoder

Shift the alphabet by 13 to obscure spoilers or puzzles.

MD5 Hash Generator

Paste any text and get an MD5 digest instantly.

SHA-256 Hash Generator

Generate SHA-256 hashes from text locally for integrity checks and fingerprints.

SHA-1 Hash Generator

Compute SHA-1 checksums in the browser for legacy APIs and Git-style object ids.

SHA-512 Hash Generator

Create SHA-512 digests in the browser when a protocol asks for a 512-bit checksum.

JWT Decoder

Decode a JSON Web Token header and payload locally. Signatures are shown, not verified.

Number Sorter

Clean up comma or line-separated numbers.

UTM Builder

Add utm_source, utm_medium, utm_campaign to any base URL.

QR Code Generator

Generate QR codes for URLs, text, and notes.

Barcode Generator

Free online barcode generator: create CODE 128, CODE 39, EAN-13, UPC-A, ITF-14, and QR codes.

Frequently asked questions

Do formatters upload my source code?

Standard formatters run in this browser after the page loads. Copy or download when you need to share output elsewhere.

Which JSON tool should I open first?

Use JSON Formatter to pretty-print or minify. Use JSON Editor for tree views, repair, and compare. Use JSON Unstringify when the payload is a quoted JSON.stringify result.

浏览 Case Modify

Case Modify 提供免费的浏览器工具：大小写转换、代码格式化、随机生成器和单位换算。页面加载后，转换在这台设备上完成。

机器可读摘要: llms.txt, llms-full.txt, agents.txt.