CraftSprint
178 free tools · CraftSprint AI · 100% in your browser
Paste JSON to instantly validate, pretty-print or minify it, with clear error messages when something is wrong.
API responses and config files often arrive as one long unreadable line. The JSON formatter turns that into clean, indented JSON you can read at a glance, and tells you when the JSON is invalid so you can find the problem quickly.
Paste your JSON, format it with readable indentation or minify it into a single compact line for production. Common errors include trailing commas, single quotes instead of double quotes and missing brackets; the validator points out that the input cannot be parsed so you know where to look.
Your data is processed locally in the browser and is never sent anywhere, which matters when JSON contains tokens, keys or customer data. Need types? Paste the same JSON into the JSON to TypeScript tool.
No. Parsing and formatting run entirely in your browser using the built-in JSON parser.
The tool shows the exact parser error so you can find and fix the issue quickly.
