justyourdevJSON Minifier
Remove whitespace from JSON to make it smaller.
- 100% Free
- No Sign Up
- Works in Your Browser
JSON minifier
Strip whitespace from JSON
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How to use the JSON minifier
Three steps, all in your browser.
- 1
Paste your input
Type or paste your code or data. Press Sample to try an example.
- 2
Pick the style
Choose indentation or options. The result updates as you type.
- 3
Copy the result
Copy the output in one click. Nothing is saved or sent anywhere.
JSON Minifier: what to know
The JSON minifier removes every space, tab and line break that sits between tokens, giving the smallest valid version of the same JSON. Whitespace inside string values is part of the data and is kept, so the result parses to exactly the same value as the original.
Minified JSON is what servers usually send: it's smaller over the network and in storage, and slightly faster to parse. The tool shows the size before and after so you can see the saving, which is typically largest for deeply indented documents.
If your server already compresses responses with gzip or Brotli, much of the whitespace saving is absorbed by compression, but minifying still helps for JSON embedded in HTML, stored in databases or caches, or sent through channels with size limits such as environment variables and message queues.
Popular uses
- Embedding JSON in a script tag or data attribute
- Fitting JSON into an environment variable or CLI argument
- Shrinking fixtures and seed files
- Sending compact payloads through message queues
Tips for the best result
- Keep the formatted version in your repository and minify at build time, so diffs stay readable.
- Minifying also validates: if the JSON is invalid you get the error instead of output.
- For JSON in an HTML script tag, escape </ as <\/ so the browser can't end the tag early.
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