Online JSON Editor — Edit, Format & Validate JSON
A full online JSON editor with syntax highlighting, inline validation, and an editable tree view. Paste or upload your JSON to edit it live, format or minify, explore it as a graph or table, and download the result — free and private.
How to use JSON Editor
- Paste your JSON into the editor, or upload / drag-and-drop a
.jsonfile. - Use the toolbar to Format, Minify, or Fix your JSON.
- Switch to Tree, Graph, or Table to explore the structure.
- Filter values with a JSONPath query when you need a specific part.
- Click Copy or Download to save the result.
Features
Beautify & minify
One-click pretty-print or compact your JSON to a single line.
Validate & auto-fix
Catch syntax errors instantly and repair common mistakes automatically.
Tree, graph & table views
Explore nested JSON visually and edit it inline.
Transform tools
Stringify, unescape, parse nested JSON, and sort keys.
JSONPath filter
Query and extract exactly the values you need.
100% private
Everything runs in your browser — nothing is uploaded.
What is JSON Editor?
A JSON editor is a purpose-built workspace for creating and modifying JSON with immediate feedback. JSON Reader pairs a VS Code-grade code editor with an editable tree so you can change values inline, add or remove keys, and catch mistakes as you go. Transform tools, a JSONPath filter, and graph and table views round out a complete editing environment that runs entirely in your browser.
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Frequently Asked Questions
Everything you need to know about JSON Reader