What JSON minification removes
Minification removes insignificant spaces, indentation, and line breaks while preserving the parsed data. The result is useful when payload size matters or compact JSON is required for transport and storage.
JSON Minifier
Compress JSON by removing unnecessary whitespace and line breaks. See the size reduction instantly without uploading your data.
Minifier workspace
Remove unnecessary JSON whitespace and compare the byte sizes.
JSON input
Minified JSON
- Original
- 170 B
- Minified
- 120 B
- Saved
- 50 B (29.4%)
Your JSON stays on this device.
Measured in UTF-8 bytes
The size summary compares the original and minified documents as UTF-8, the encoding commonly used for JSON on the web. It reports both the byte difference and percentage saved.
JSON Minifier FAQ
Does minifying JSON change its values?
No. Valid JSON is parsed and serialized without formatting whitespace. Object keys, array items, strings, numbers, booleans, and null values remain intact.
Why can a tiny value become larger?
JSON serialization may normalize some compact number or escape representations. For typical formatted documents, removing indentation and line breaks substantially reduces the size.