JSON Formatter / Validator
Validate, format and compact JSON without uploading your input.
Open tool ↗Inspect URL structure and repeated query parameters without visiting the URL.
Ready. Use Ctrl/⌘ + Enter to run.
Completed and failed run counts are stored only on this device.
Paste an absolute HTTP(S) URL. Inspect ordered decoded query entries, host and path. Credentials are rejected. Nothing is fetched.
At most 16,384 characters and 200 query entries. Only HTTP(S); malformed percent encoding and embedded credentials are rejected. Query values and fragments can contain private data.
No. Parsing runs in a local browser worker. No URL is fetched and raw input is not stored.
This is a bounded local inspection aid. It does not verify a live server, a security policy or complete website accessibility.
Validate, format and compact JSON without uploading your input.
Open tool ↗Convert JSON and YAML 1.2 locally, with duplicate-key and alias limits.
Open tool ↗Convert CSV tables and JSON arrays of flat objects. CSV output escapes spreadsheet formula prefixes.
Open tool ↗