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JSON Minifier
Shrink JSON files instantly by removing all whitespace. Paste or upload a pretty‑printed JSON file and get a fully valid, compact version that is smaller in size – ideal for API payloads, config files, or any situation where every byte counts. The side‑by‑side size comparison shows exactly how much space you saved.
🔒 Processing happens in your browser — files are never uploadedFree · No sign-up required
How to Use
- 1Click the upload area or drag & drop a .json (or .txt) file onto the page.
- 2Press the Minify button. The tool parses the file, validates it, and builds a minified version.
- 3Review the original size, the new size, and the percentage reduction. Click Copy to copy the minified JSON to your clipboard.
Why use AppSofts' JSON Minifier?
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100% Private
Files never leave your browser. Zero server uploads.
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Instant Results
Processing happens locally — no waiting for uploads.
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Completely Free
No account needed. Use 5 times per day, always free.
Frequently Asked Questions
Does minification change the data?
No. The process only removes whitespace outside strings. All keys, values, and data types remain unchanged.
Can I minify a JSON file that contains comments?
Standard JSON does not allow comments. If your file contains them, the minifier will show a parsing error. Use a JSON validator first if needed.
Is the file uploaded to any server?
Absolutely not. All processing happens inside your browser – your file never leaves your device.