PixoateJSON Prettify & Minify - Format and Validate JSON Free
Paste, validate and prettify JSON with 2 / 4 / 8 space indentation, or minify to a single line. Drop a .json file or paste, then copy or download.
Paste your JSON here…
or drop a .json file
Done with JSON Prettify? Try these next
Hand-picked tools that pair well with JSON Prettify. Keep going without losing your file.
HTML Prettify
Beautify messy HTML with proper indentation or minify to a single line. Drop a file or paste, then copy or download.
Try it nowBase64 Encoder / Decoder
Encode any text or file to Base64 (with URL-safe variant), or decode Base64 back to text. UTF-8 safe.
Try it nowJWT Decoder
Decode JSON Web Tokens, view header and payload, check expiry. Local-only — your tokens never leave the browser.
Try it nowTable to JSON / SQL
Paste CSV, TSV, semicolon, pipe or Markdown tables and convert to JSON, JSONL or SQL INSERT statements instantly.
Try it nowDiff Checker
Compare two text snippets line by line. Split or unified view, optional ignore whitespace and ignore case.
Try it nowMarkdown Editor
Write Markdown with live HTML preview. Headings, lists, tables, code fences, blockquotes. Export to HTML or Markdown.
Try it nowFrequently Asked Questions
Paste your JSON into the input panel — it is parsed and reformatted instantly with 2, 4 or 8-space indentation. If the JSON is invalid, you get the exact line and column of the error from the native parser. Everything runs in your browser, so no API keys, no rate limits, and your data never leaves your device. Use Prettify for readable, indented output or Minify to collapse to a single line for shipping over the wire.
usagePrettify adds line breaks and indentation so JSON is easy for humans to read and review during debugging. Minify strips every space, tab and newline, producing the smallest possible payload — useful for API requests, configuration embedded in source code, and reducing bundle size. Our tool offers both modes with a single click.
featuresValidation is powered by your browser's native JSON.parse, the same parser used by every JavaScript runtime. Errors surface the exact offending token plus its position, which usually pinpoints a missing comma, unmatched bracket, trailing comma, or unquoted key. Fix the highlighted spot and the output panel updates as you type.
technicalNo. The JSON Prettify tool runs 100% client-side in your browser — no server round trip, no logging, no caching. This makes it safe for sensitive payloads like API responses with personal data, internal configuration, or production secrets that you would never paste into a hosted tool.
privacyYes. Drag any .json file onto the input panel and it is read directly into the editor. Large files (multi-megabyte API dumps, exported configs, log files) work as long as your browser can hold them in memory — typically tens of megabytes without issue.
usageNo, the tool follows strict RFC 8259 JSON because that is what JSON.parse accepts. Comments, trailing commas, single quotes and unquoted keys will be flagged as invalid. If you need JSON5 or JSONC support, strip the non-standard syntax first, then format with Pixoate.
featuresAfter formatting, click Copy to put the result on your clipboard with a single keystroke, or click Download to save as output.json (or output.min.json in minify mode). The output preserves UTF-8 encoding, so emoji and non-Latin characters stay intact.
tipsCompletely free with no account required. There are no usage limits, no watermarks, no ads in the output, and no paid tier. The tool exists alongside our PDF and image utilities as part of a free developer-and-creator toolkit.
pricingHow JSON Prettify helps you get it done
Real problems it solves every day — for businesses, creators, and everyday tasks. Find the use case that fits you and start in seconds.
API Response Debugging
Paste a minified API response from your dev tools and instantly see the structure indented. Spot missing fields, validate the shape, and confirm null vs. undefined handling without firing up a JSON viewer extension.
Config File Cleanup
Pull a tangled package.json, tsconfig.json or .eslintrc.json back into a readable shape after a merge conflict resolution. Format, sanity-check, and commit a clean version in one minute.
Database Export Inspection
Inspect a JSON export from MongoDB, DynamoDB or Firestore before importing it. Validate that the structure matches your schema and that no records have unexpected null collisions.
Webhook Payload Inspection
Capture an incoming webhook payload from Stripe, GitHub, Linear or Slack and pretty-print it to understand the shape — essential when building integrations or debugging missing event fields.
Code Review Helpers
Paste reviewer-supplied JSON examples into PR descriptions in their full prettified form, or shrink them with Minify when space is tight in chat. Either way the file is valid and copy-paste safe.
Production Secret Handling
Because everything runs in your browser, you can paste production secret payloads to inspect them without any network round trip — exactly the workflow that DevOps teams need but cloud JSON tools can't provide safely.