Remove all whitespace from JSON for production payloads and API responses. Shows compression savings. Browser-based, no upload required.
Privacy: Conversion runs locally in your browser. Your source file is not uploaded to JAD Apps servers.
Strip every byte of whitespace from your JSON to shrink production payloads, API responses, and stored documents. The minifier reports the exact byte savings so you can quantify the impact and optionally drop null values for tighter output.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Drop a JSON file
Drag a .json onto the dropzone or paste text. Parsing happens locally.
(Optional) toggle null removal
Enable 'Also remove null values' to strip explicit nulls from objects in addition to whitespace.
Download the minified file
The compression ratio is shown alongside the result. Download or copy to use immediately.
Pretty-printed JSON usually shrinks 20–35% when minified. Heavily-indented documents can shrink even more.
No — keys, values, and structure are preserved exactly. Only whitespace (and optional nulls) are removed.
Yes — the minified output is valid JSON and can be re-prettified with no data loss.
Privacy
Conversion runs locally in your browser. Your source file is not uploaded to JAD Apps servers.
Format and prettify JSON with 2 spaces, 4 spaces, or tabs. Sort keys alphabetically for readable diffs. Browser-based, no upload required.
Validate JSON syntax in real time. See exact line and column of errors, common mistake hints, and structure summary. Browser-based, no upload.
Remove null, undefined, empty strings, and empty arrays from JSON recursively. Clean up API responses and data exports. Browser-based, no upload.