JSON Formatter & Validator
Pretty-print, minify and validate JSON with precise error messages pointing at the exact line and column. Runs entirely in your browser.
JSON Formatter is on the way
This tool is still being built. The page is here so you can find it and see what it will do — check back shortly, or use one of the related tools below in the meantime.
Browse working toolsFrequently asked questions
When will the JSON Formatter be available?
It is in active development. In the meantime, the API URL Extractor includes a Format JSON button that pretty-prints whatever you paste.
Will it upload my JSON?
No. Like every client-side tool here, formatting and validation will run entirely in your browser.
Last updated 2026-08-08