Purpose: Strip all whitespace from JSON to shrink payloads for APIs and config files, with size savings shown.
JSON Minifier
The JSON Minifier compresses JSON by stripping every unnecessary space, tab, and line break, and shows how many bytes you saved - ideal for APIs and config files.
Smaller payloads, faster transfers
Formatted JSON is easy to read but wastes bandwidth. Minifying removes all non-essential whitespace without changing the data, so responses and config files are smaller and load faster. The tool reports the original size, the minified size, and the percentage saved.
When to minify
Minify JSON that is sent over the network or embedded in a page for production, and keep a formatted copy for editing. To reverse the process and make minified JSON readable again, use the JSON Formatter. Processing is entirely local.
Frequently Asked Questions
Does minifying change my data?
No. It only removes whitespace. The keys, values, and structure remain exactly the same.
How much space does minifying save?
Savings vary with formatting, but removing indentation from heavily formatted JSON often cuts size noticeably; the tool shows the exact percentage.
Can I un-minify JSON later?
Yes. Paste it into the JSON Formatter to restore readable indentation.
Is it safe for sensitive config files?
Yes. Minification runs in your browser, so nothing is uploaded.
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