The JSON tool developers deserve
Format, validate, diff, and query JSON in one clean workspace. Tree view, syntax highlighting, and instant validation — no clutter, no data uploads.
{
"name": "JSONLoom",
"version": "1.0.0",
"private": true,
"features": [
"format", "validate", "diff", "query"
],
"stars": 9001
}Everything you need for JSON, in one tab
Stop switching between 5 different JSON tools. JSONLoom combines formatting, validation, diff, and querying into a single, fast workspace.
Format & Beautify
One-click formatting with configurable indentation (2/4/tab). Minify for production. Copy or download the result instantly.
Validate with Precision
Instant validation with inline error markers. See exactly which line and column has the issue, with clear error messages.
Tree View Explorer
Collapsible tree view to navigate complex JSON structures. Search nodes, copy paths, and expand/collapse sections.
JSON Diff
Side-by-side structural comparison. See exactly what changed between two JSON documents. Additions, deletions, and modifications highlighted.
ProHow It Works
Paste or Drop
Paste JSON from your clipboard or drag-and-drop a .json file. It loads instantly.
Format & Explore
Auto-format, switch to tree view, and validate instantly. Navigate complex structures with ease.
Copy & Go
Copy the formatted output to your clipboard or download as a .json file. Done in seconds.
100% Private
Data never leaves your browser
Instant Processing
Client-side parsing, zero uploads
Files up to 5MB Free
Pro handles 50MB+
Pricing
Format and validate for free. Upgrade for power features.
Prices shown exclude applicable taxes.
Free
- ✓Unlimited formatting & validation
- ✓Tree view with search
- ✓Syntax highlighting & code folding
- ✓File drag-and-drop (up to 5MB)
- ✓Dark IDE theme
Pro
- ✓Everything in Free
- ✓JSON diff (side-by-side comparison)
- ✓JSONPath queries with live results
- ✓Large file support (up to 50MB)
- ✓Ad-free experience
Crate Pass
- ✓All Cashew Crate apps
- ✓Everything in Pro
- ✓No ads anywhere
- ✓New apps added regularly
- ✓Cancel anytime
Prices shown exclude applicable taxes.