Compress PDF
Reduce PDF file size to your target
Drop your files here
or click to browse
Compress PDF — Free Online Tool
Reduce file size while maintaining quality. This tool runs entirely in your browser — your files are never uploaded to any server. No sign-up required, no watermarks, no file size limits. Works on Windows, Mac, Linux, iPhone, and Android.
How to use Compress PDF
- Open this page in any modern browser (Chrome, Firefox, Safari, Edge)
- Drop your file(s) into the upload area or click to browse
- Adjust any settings if available
- Click the process button and download your result
Why choose Compress PDF?
- ✓100% private — files are processed in your browser, never uploaded
- ✓Completely free — no sign-up, no watermarks, no limits
- ✓Instant processing — no server queues, no waiting
- ✓Works everywhere — Windows, Mac, Linux, iOS, Android
Compress PDF — frequently asked questions
Will compressing a PDF reduce its quality?+
At the recommended compression level, images are re-encoded at 150 DPI — visually identical to the original for screen viewing and standard printing.
How much smaller will my PDF get?+
Photo-heavy PDFs shrink 60-80%. Text-only files shrink 10-30%. Scanned documents can shrink up to 90%.
Can I compress a password-protected PDF?+
You need to unlock it first. Compression tools cannot read encrypted files until the password is removed.
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