JSON Tools
Format, validate, minify, and analyze JSON
Format, validate, minify, and sort JSON through the shared DevFoundry json registry — the same actions as the CLI and MCP. Paste JSON to pretty-print it, check it with line-level errors, minify it, or sort keys. To edit a document in place, with highlighting and a tree view, use the JSON Editor. That workspace keeps the JSON in your browser.
Live tool
Shared registryUses the shared DevFoundry registry via the web API — same logic as devfoundry json.
Input0 chars
Output
Parse Error
Valid JSON
Capabilities
Pretty print
Validation
Minify
Sort keys
Stats
Where this runs
- Format, validate, minify, sort, and stats run through the DevFoundry web API — the same actions as the CLI and MCP
- Pasted JSON is sent to that API for the action you choose
- For a local editor and tree view, use the JSON Editor. That page does not upload the document
