How is minifying different from formatting?

Formatting adds readable indentation and line breaks. Minifying removes all unnecessary whitespace to produce the smallest valid JSON string.

Will minified JSON parse the same as the original?

Yes. Parsers treat minified and pretty-printed JSON identically. Only bytes on the wire change.

Can I minify JSON with comments?

No. Standard JSON does not support comments. Strip comments before minifying, or use a format like JSONC with a dedicated parser.

Should I minify JSON sent over HTTPS?

Whitespace savings help with large payloads and logging costs. For small API bodies the difference is negligible — minify when size or readability in transit matters.

Is there a size limit?

Inputs up to 5 MB are supported, the same limit as the formatter and validator.

JSON Minifier

Remove insignificant whitespace from JSON to shrink HTTP bodies, log batches, and cached files. The minified output is semantically identical — only spacing is stripped.

JSON input

Result

Minified output

Result appears here.

How to minify JSON

Paste formatted or messy JSON into the input.
Click Minify.
Copy or download the compact JSON string.
If the input is invalid, fix it in the JSON Validator or Formatter first.

FAQ

: Formatting adds readable indentation and line breaks. Minifying removes all unnecessary whitespace to produce the smallest valid JSON string.
: Yes. Parsers treat minified and pretty-printed JSON identically. Only bytes on the wire change.
: No. Standard JSON does not support comments. Strip comments before minifying, or use a format like JSONC with a dedicated parser.
: Whitespace savings help with large payloads and logging costs. For small API bodies the difference is negligible — minify when size or readability in transit matters.
: Inputs up to 5 MB are supported, the same limit as the formatter and validator.

Result

How to minify JSON

FAQ

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