JSON Formatter & Validator
Validate JSON, beautify or minify, explore a tree view, and copy results — privately in your browser.
Your files never leave your device
Valid JSON
Tip: Beautify applies 2-space indent; Minify removes all unnecessary whitespace. Parsing uses JSON.parse — only valid JSON is accepted.
How It Works
Step 1
Paste JSON
Paste or type JSON in the editor. Validation runs as you work.
Step 2
Beautify or minify
Use Beautify for readable indentation or Minify for a single compact line.
Step 3
Copy or inspect
Switch to Tree or Highlighted view, then copy formatted or minified output.
Frequently Asked Questions
JSON requires double quotes for keys and strings, no trailing commas, and no comments. Check the error message for the first problem near your cursor.
No. Parsing and formatting happen entirely in your browser.
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