Every JSON tool in one workspace — repair, format, minify, validate, explore, diff and convert. Switch instantly, no page reloads. Broken JSON is repaired automatically.
Most JSON utilities scatter each function across a separate page, so you lose your data every time you switch from validating to formatting to converting. JSON Studio keeps your JSON in a single big-screen editor and lets you flip between seven tools instantly: Repair, Format, Minify, Validate, Tree, Diff, and Convert. The two-pane layout — input on the left, live result on the right — is built for laptops, desktops, and large monitors.
Unlike plain validators, JSON Studio is powered by our repair engine, which is tuned for the broken output that language models produce: markdown code fences, trailing and missing commas, single quotes, unquoted keys, Python-style True/False/None, inline comments, NaN/Infinity, and truncated responses. Turn on Auto-repair input and every tool — formatting, tree view, conversion — will first clean up malformed or unstructured JSON before running, so you are never blocked by a single stray character.
Everything runs in your browser. Your JSON is never uploaded, logged, or stored on a server — making JSON Studio safe for API keys, customer records, and internal payloads. For the dedicated single-purpose pages, see the JSON Repair, Formatter, Validator, Minifier, and Diff tools.
JSON Studio also includes specialist tools for advanced workflows: JWT Decoder parses and verifies JSON Web Tokens without sending them to a server, JSONPath Tester runs JSONPath expressions against any JSON document to extract fields for pipelines and APIs, JSON Schema Generator infers a draft-07 schema from any JSON sample, and the AI-specific fixers handle the output patterns unique to each model: Claude JSON Fixer and OpenAI JSON Mode Fixer.