🗜️
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.
🔒 File processing runs locally in your browserFree to start · 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.
⚡
Need more power?
Upgrade to Pro for higher usage limits, premium features, and an ad-free experience.
Go Pro — $9/monthWhy use ShowPro's JSON Minifier?
🔒
Private by Design
File-processing tools keep your files in the browser.
⚡
Instant Results
Processing happens locally — no waiting for uploads.
🆓
Free to Start
No account needed for the free tier. Limits are shown where they apply.
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.