- Home
- JSON Tools
- POLPROG JSON Formatter
On the recordRead 7 Oct 202615 facts
POLPROG JSON Formatter
Warsaw, Poland
Plans and prices
Free
Free
Free to use · no registration
Read 7 Oct 2026 · polprog.pl
On the record
- Comparison
- Its semantic diff ignores indentation, line endings and object key order, while comparing arrays as ordered sequences.polprog.pl · read 7 Oct 2026
- Conversion
- It can convert JSON to YAML, a TypeScript interface or CSV.polprog.pl · read 7 Oct 2026
- File limit
- Documents are capped at 5 MiB; syntax highlighting switches off above 300 KiB and detailed diff may stop early on very large trees.polprog.pl · read 7 Oct 2026
- Formatting
- It can format JSON with two spaces, four spaces or tabs, and can minify it.polprog.pl · read 7 Oct 2026
- Intended use
- The page describes use cases including reading API responses, checking webhook payloads, comparing configuration versions and turning sample responses into TypeScript interfaces.polprog.pl · read 7 Oct 2026
- Local storage
- The page says the only setting retained between visits is the selected indentation, and document content is not written to storage or the address bar.polprog.pl · read 7 Oct 2026
- Maker
- POLPROG describes itself as a Polish technology company founded by Damian Skrzyński and says it is based in Warsaw, Poland.polprog.pl · read 7 Oct 2026
- Privacy
- JSON processing runs locally in the browser and the page says pasted or dropped documents are never uploaded to POLPROG servers.polprog.pl · read 7 Oct 2026
- Purpose
- The browser-based tool formats, validates, inspects and compares JSON.polprog.pl · read 7 Oct 2026
- Requirements
- The workspace runs in the browser and requires JavaScript.polprog.pl · read 7 Oct 2026
- Scope limit
- The tool does not validate JSON Schema or repair broken documents.polprog.pl · read 7 Oct 2026
- Sorting
- It can sort JSON keys A–Z or Z–A.polprog.pl · read 7 Oct 2026
- Tree and search
- The tool provides a tree view with copyable paths and values, plus search for keys or values.polprog.pl · read 7 Oct 2026
- Validation
- Validation reports the error line, column, character offset and cause, and can flag duplicate keys and large integers that lose precision in JavaScript.polprog.pl · read 7 Oct 2026
