Compress PDF

Depending on the content, you can typically reduce file size by 40–90%. Image-heavy PDFs see the largest reductions, while text-only documents may compress less.

Our default setting balances size and quality so most users see no visible difference. You can also choose a lighter compression level to preserve maximum fidelity.

Yes. Your PDF is processed entirely in your browser using WebAssembly. No data is uploaded to any server — your files stay on your device at all times.

There is no hard limit. However, very large files (500 MB+) may take longer to process depending on your device's available memory.

Yes. Our batch processing feature lets you drop multiple files and compress them all in parallel. Each file is processed independently.

No. Compression focuses on images and metadata. Hyperlinks, bookmarks, form fields, and annotations are preserved in the output.

Three levels: Light (minimal size reduction, maximum quality), Medium (good balance for most documents), and Aggressive (maximum compression, some visible quality reduction in images).

Yes. Scanned PDFs often contain large images, which makes them ideal candidates for compression. You can expect significant size reductions.

No. The compress tool is completely free and works without any registration, login, or email.

You will need to remove the password protection first. Our tool cannot modify encrypted PDFs directly, but you can process the unlocked version.