JSON Formatter
Use it to pretty-print, validate, minify, and inspect JSON payloads.
Formatting
JSON and Code Formatting Tools
Use these formatting tools when you need readable JSON, valid syntax, compact payloads, or cleaner code snippets before sharing them with APIs, logs, and documentation.
Related tools
JSON Formatter and Validator Online | Format, Minify, Debug
Format, validate, and minify JSON with instant error highlights—fully local.
Open toolJSON Validator | Validate & Debug JSON Syntax
Live JSON validation with exact line/column errors—fully local in your browser.
Open toolJSON Minifier | Compress JSON Online
Minify and compress JSON data by removing whitespace—fully local.
Open toolSQL Formatter | Format & Beautify SQL Queries
Beautify SQL with indentation, line breaks, and uppercase keywords. Supports all major dialects—runs locally for privacy.
Open toolXML Formatter & Validator | Online XML Beautifier & Checker
Format, beautify, and validate XML with error highlighting—fast, private, and local.
Open toolYAML Formatter & Validator | Online YAML Beautifier & Checker
Format, lint, and validate YAML with indentation and syntax checks — fast, private, and accurate.
Open toolCSS Formatter | Beautify CSS Code Online
Format and beautify CSS stylesheets with proper indentation—fully local.
Open toolCSS Minifier | Compress & Optimize CSS
Minify CSS to cut file size and accelerate loads—fully local in your browser.
Open toolHTML Formatter | Beautify HTML Code Online
Format and beautify HTML code with proper indentation—fully local.
Open toolHTML Minifier | Compress & Optimize HTML
Minify HTML to cut size by ~20–40% without changing layout—runs locally in your browser.
Open toolJavaScript Formatter | Beautify JS Code Online
Format and beautify JavaScript code with customizable style—fully local.
Open toolJavaScript Minifier | Compress & Optimize JS
Minify JavaScript to cut size by ~30–60% while preserving behavior. ES6+ supported. Runs locally.
Open toolMarkdown Preview | Live GFM Renderer & HTML Converter
Live Markdown-to-HTML preview with full GFM, syntax highlighting, math, and footnotes support.
Open toolTool selection guide
Which formatting tool should I use?
JSON Validator
Use it when the main job is finding syntax errors and fixing invalid JSON.
SQL, XML, and YAML formatters
Use these when the data format is not JSON but still needs readable structure.