A beautiful and powerful JSON formatter, validator, and toolkit for developers
Users
13
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#177K
#147K among extensions
Version
1.0.0
updated 3 Jan 2026
Users
monthly, 10 months
Latest, 17 Oct 2026:13 usersMove the mouse over the chart for any month
Ratings count
monthly, 10 months
Latest, 17 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About JSONer - JSON Toolkit
JSONer is a powerful JSON toolkit that helps developers work with JSON data more efficiently.
Features:
🎨 Format JSON
- Beautify and format JSON with proper indentation
- Collapsible tree view for easy navigation
- Syntax highlighting for better readability
📦 Minify JSON
- Compress JSON by removing whitespace
- Perfect for optimizing API payloads
🔤 Escape JSON
- Convert JSON to escaped string format
- Useful for embedding JSON in strings
✅ Validate JSON
- Real-time JSON validation
- Clear error messages with line numbers
📋 Additional Features
- Copy formatted output to clipboard
- Download JSON as file
- History of recent JSON operations
- Dark/Light theme support
- English and Chinese language support
- Works on any webpage
How to Use:
1. Click the JSONer icon in your browser toolbar
2. Paste your JSON in the input area
3. Click Format, Minify, Escape, or Validate
4. Copy or download the result
Perfect for web developers, API developers, and anyone who works with JSON data regularly.
Website: https://jsoner.dev