Tools / Data
JSON Tools
Format, tree, table, path, schema, TypeScript types, YAML, NDJSON, redact, jump to parse errors. Free, runs entirely in your browser—nothing is uploaded.
What you can do
- Format
- Tree
- Table
- Path
- Schema
- TypeScript types
- YAML
- NDJSON
- Redact
- Jump to parse errors
Private by design
JSON Tools runs entirely in your browser. Your input is never uploaded, there is no sign-up, and the tool keeps working offline after the first visit.
Related tools
- YAML ↔ JSON — Convert, validate, merge, sort keys, multi-doc, jump to errors.
- CSV Tools — CSV/TSV ↔ JSON, Markdown, SQL inserts; sortable preview and column profile.
- Diff & Compare — Line/word compare, list diff, unified patch, files.
- JWT Lab — Decode, sign HS/RS/ES/PS, verify JWK/JWKS, inspect claims.