Does the beautifier validate my JSON too?

Yes. Invalid JSON triggers a parse error with the line and column number highlighted so you can fix it quickly.

Can I format JSON with comments (JSON5)?

Standard JSON does not allow comments. Strip them first or use the YAML formatter which supports comments.

The browser handles files up to around 5 MB comfortably. Larger files may be slow depending on device memory.

The beautifier formats valid JSON for readability; the validator only checks syntax without reformatting output.

Paste compact or minified JSON and get it indented, syntax-highlighted, and validated instantly.

Input

Output

Paste compact or minified JSON and get it indented, syntax-highlighted, and validated instantly.

Last updated: 2026-07-01 · Reviewed by Nham Vu