JSON Minifier

Compression only removes unnecessary characters like spaces, tabs, and newlines that exist outside string literals. The structural schema and values remain exactly the same.

The tool reports exact before/after character counts and a live percentage. Typical hand-formatted files shrink by 30–50%; files that were already compact shrink far less.

Yes. Drag the file into the input area or use the file loader, then copy the single-line result or download it as an optimized .json file.

No. Whitespace inside quoted string values is never touched — only formatting whitespace between tokens is removed.

Paste or upload your JSON and run the minifier. All removable whitespace between tokens is stripped, producing a single-line payload ready for config files, API responses, or embedding in HTML.

No. Characters inside quoted strings are preserved byte-for-byte; only structural whitespace outside strings is removed, so data integrity is never affected.

Savings depend on how much indentation the source had. Hand-formatted files typically shrink significantly, while already-compact payloads may barely change.