JSON Formatter / Beautifier

Paste or upload JSON, beautify/minify, validate, view tree, compare two files, search, sort keys, convert and download — all client-side.

Choose JSON

No file chosen

Choose 2nd (for Diff)

2nd file: none

Drop JSON file here or click to select Supports single or two-file upload for diffing. Paste JSON into the left editor for quick tests.

Indentation 2 spaces 4 spaces Tab

Actions

Quick Tools

Other

Input JSON

Output / Tree / Diff

Output will appear here.

Tip: Everything runs locally in your browser. Large JSON may take time — we'll show errors if parsing fails.

Desktop Recommended

This tool is best viewed on Desktop for full functionality and performance.
Please switch to a desktop or larger screen.

How to Use This JSON Formatter / Beautifier Tool

Our JSON Formatter / Beautifier is a powerful, all-in-one tool designed for developers, students, content creators, and professionals to easily work with JSON. It is 100% free, runs completely in your browser, and does not upload your data to any server, ensuring privacy and speed.

1. Input Your JSON:
- Paste JSON: Use the left input area to paste any JSON code.
- Upload JSON File: Click “Choose JSON” to upload a file.
- Drag & Drop: Drag JSON into the drop zone.
- 2nd File for Diff: Upload a second file to compare differences.
Tip: Paste directly from clipboard using “Paste JSON”.

2. Beautify or Minify:
- Beautify: Makes your JSON readable with proper indentation.
- Minify: Compresses JSON into compact form.
- Indentation Options: 2 spaces, 4 spaces, or Tab.
Tip: Beautify before editing for easier navigation.

3. Validate Your JSON:
Click “Validate” to check if your JSON is correctly formatted. Use “Auto-Fix” to fix common errors like missing quotes, trailing commas, and improper brackets.
Tip: Always validate after auto-fix.

4. Tree View & Output:
- Tree View: Click “Tree View” to visualize JSON as expandable nodes.
- Raw Output: Click “Show Raw” for formatted text.
- Collapse/Expand All: Manage large JSON files easily.
Tip: Tree view helps locate nested keys quickly.

5. Quick Tools:
- Copy: Copy JSON to clipboard.
- Download: Save JSON as a file.
- Sort Keys: Alphabetically sort keys.
- Search: Find any key or value quickly.

6. Convert JSON to CSV:
Click “JSON → CSV” to convert JSON arrays into CSV for spreadsheets.
Tip: Works best with arrays of objects.

7. Compare JSON (Diff):
Upload a second file and click “Show Diff” to see changes:
- Green: Added in 2nd file
- Red: Removed in 2nd file
- Orange: Changed
Tip: Track differences between versions easily.

8. Additional Tips:
- Desktop Recommended: Best UI and performance.
- Privacy: Everything runs locally; data never leaves your browser.
- Large Files: Use Collapse All for big JSON.
- Free Tool: No login, subscription, or ads.

Why This Tool is the Best:
1. All-in-One: Beautify, Minify, Validate, Tree View, Diff, Sort, Search, CSV conversion.
2. Fast & Offline: Works fully in-browser.
3. User-Friendly: Clean, interactive UI.
4. Safe & Private: JSON never leaves your device.
5. Free Forever: No restrictions or hidden fees.

💡 Pro Tip: Always validate JSON before exporting, use Tree View & Search to navigate, and Auto-Fix for quick corrections.

A free tool to beautify, minify, validate, view tree, compare, search, sort, convert JSON, and download — all in your browser.

Click Auto-Fix to correct common errors, then Validate to check.

Yes, upload both files and click Show Diff to see differences.

Yes! Everything runs locally; nothing is sent to any server.

Use Beautify/Minify, Tree View, Search, Sort Keys, and always Validate before downloading.