UUID Studio

UUID Studio

JSON Formatter

Pretty-print JSON with live syntax colors.

  • đź”’ No data stored or uploaded
  • ⚡ 100% client-side
  • 🆓 Free, no account
Click Convert when ready

Override only when Auto cannot parse your paste. Changing this loads a matching sample into Input — click Convert to run. Use Load sample to cycle every format example.

All conversions

Read-only representations of the same 16 bytes. Every textual form is listed here, not in “Prefer format”.

Paste two values: if both sides are valid JSON, a structural diff appears; otherwise UUID / bytes are compared when both decode to the same format.

A
B

Create or edit JSON here (syntax colors), then format, validate, or convert - same as MongoDB $binary UUID blobs on the Convert tab once detected.

New document

Hash, HMAC, AES-GCM/CBC + RSA-OAEP, codecs, JWT decoding, UUID v4, and secure random - all client-side. JWTs use Base64URL (three segments), not a single MIME Base64 block - use Decode JWT below, not raw Base64 decode.

Examples

  • Minified input 
    {"name":"app","active":true,"tags":["api","v2"]}

About JSON Formatter

Minified JSON from a network tab or log line is unreadable the moment it's more than one object deep. This formatter turns it back into properly indented, syntax-highlighted JSON you can actually scan.

Type or paste directly into the editor - syntax highlighting updates live - then pretty-print, and the result is ready to paste into a ticket, a doc, or a code review comment. Invalid JSON is flagged with the exact parse error location instead of silently failing.

FAQ

Does it fix trailing commas?
No - invalid JSON is reported with a parse error location so you can fix the source.