What is JSON Editor?
This JSON editor runs locally in your browser. Type JSON on the left and the tree view on the right updates in real time — objects and arrays expand and collapse, strings/numbers/booleans/null are color-coded, and syntax errors are flagged right below the input. One-click Format (2-space indent) and Minify buttons are included, plus node count and byte size. The path query supports dot syntax (e.g. meta.tools or tags.1) and lists all leaf paths for quick selection. Everything runs locally in your browser — nothing is uploaded. Great for developers debugging API responses, validating configs, and browsing data.
▶Use Cases5 scenarios
- ◆Debugging JSON from API responses
- ◆Validating configuration files
- ◆Browsing deeply nested JSON
- ◆Quickly extracting deep fields
- ◆Formatting or minifying JSON to share
▶How to Use5 steps
- 1Paste or type JSON in the left pane
- 2Review the live tree view and error hints
- 3Hit Format or Minify to adjust layout
- 4Use dot syntax in the query box to locate fields
- 5Copy the pretty or minified output in one click
▶Features8 features
- ✓Free
- ✓No signup
- ✓Live format & minify
- ✓Syntax error hints
- ✓Expandable tree view
- ✓Path query
- ✓Node and byte stats
- ✓100% local
▶FAQ7 questions
What is a JSON editor?
An online JSON tool. Input: JSON text. Output: formatted/minified result, a tree view, and field path queries. Used for debugging APIs, validating configs, and browsing nested data. Everything runs locally in your browser — no uploads.
Does it flag syntax errors?
Yes. Errors like Unexpected token appear under the input with a position hint.
What data types are shown?
Strings (green), numbers (blue), booleans (purple), null (gray). Objects and arrays expand and collapse.
How do I write a path query?
Use dot syntax like meta.tools or tags.1, or click a leaf-path chip below the query box.
Can I minify JSON?
Yes. Minify strips all whitespace; Format restores 2-space indentation.
Is my data uploaded?
No. Parsing, formatting and queries all happen locally with no network requests.
Does it handle large JSON?
Yes, common sizes with thousands of nodes. The tree renders on demand; for huge files, minify first.