Does minifying change values?
No. Minify only removes insignificant whitespace. Keys, strings, and numbers stay the same.
jfmt.dev
JSON Minify
Compress JSON by removing whitespace and line breaks. The output is still valid JSON — just smaller for APIs, logs, and storage.
JSON formatter
Input
Output · preview.json
{ }
Run a tool to see a polished result here
When to minify JSON
Use minify before shipping config, logging request bodies, or packing JSON into query strings. Pretty-print on the homepage if you need to read it again. Everything runs locally.
Related tools
FAQ
Is minified JSON still valid?
Yes. Parsers treat compact and pretty JSON the same. Only humans notice the missing spaces.
Can I pretty-print after minifying?
Yes. Open the homepage formatter or switch the sidebar to Format JSON.