PDF Compress

Reduce PDF file size instantly in your browser. Nothing is uploaded to any server.

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Drop a PDF here or click to upload

ℹī¸ Best for image-heavy PDFs. Text-only PDFs may not compress significantly.

Frequently Asked Questions

How does PDF compression work?

Each page is rendered at a lower resolution and re-saved as a compressed image, reducing the total file size. This works best on PDFs that contain images or scanned content.

Is my PDF uploaded to a server?

No. Everything happens entirely in your browser. Your file never leaves your device.

Why didn't my PDF compress?

Text-only PDFs generated by word processors are already highly optimised. This tool is most effective on PDFs containing images, scans, or mixed content.

Will compression reduce quality?

The High Quality preset preserves most visible quality. Maximum Compression applies stronger reduction and may show slight degradation, especially on fine text or detailed images.

Is there a file size limit?

There is no hard limit, but very large PDFs (100+ MB) may be slow to process in the browser. For best results, keep files under 50 MB.

Is this tool free?

Yes, completely free with no limits. No account or sign-up required.