JSON Formatter
Format, validate, and minify JSON.
Input
Output
Related Format / Validate / Minify tools
HTML Beautify / Minify
Beautify or minify HTML.
CSS Beautify / Minify
Beautify or minify CSS.
JavaScript Beautify / Minify
Beautify or minify JavaScript.
ERB Beautify / Minify
Beautify or minify ERB / EJS templates.
LESS Beautify / Minify
Beautify or minify LESS.
SCSS Beautify / Minify
Beautify or minify SCSS / Sass.
About the JSON Formatter
- What does the JSON Formatter do?
- Format, validate, and minify JSON. GeekTool runs the JSON Formatter entirely in your browser — input never leaves your device.
- Is the JSON Formatter free?
- Yes. The JSON Formatter is part of GeekTool, a free suite of 50+ developer utilities. No sign-up, no ads inside the tool, no quotas.
- Does the JSON Formatter send my data to a server?
- No. All processing is client-side JavaScript. Your input stays in your browser tab — we never see it.