Compress PDF files
Reduce the file size of your PDF documents dramatically. Perfect for job portals and email attachments. Processed 100% locally in your browser for absolute privacy.
Drop a PDF here, or browse
PDFs are compressed on your device.
How to compress a PDF locally
- 1 Drag your PDF document into the upload box above.
- 2 Choose a compression level depending on how small you need the final file to be.
- 3 Click Compress PDF and wait for the local engine to rasterize and shrink the document.
Frequently asked questions
- Is this PDF compressor really free?
- Yes. There are no accounts, no watermarks, and no daily limits. Compress as many PDFs as you like, as often as you like.
- Are my PDFs uploaded to a server?
- No. Compression happens entirely inside your browser using a WebAssembly-powered engine running locally. Your files never leave your device, which makes this safe for private documents like bank statements and ID cards.
- Why can I no longer highlight the text in my compressed PDF?
- To achieve extreme file size reduction completely offline, this tool uses a "Rasterization" method. It takes a high-quality picture of every page and binds them into a new, smaller PDF. This flattens the text into an image, making it unselectable, but significantly reduces the file size.
- Is there a limit on how big the PDF can be?
- Since everything runs in your web browser, the file size limit depends entirely on your computer's RAM and processing power. Most modern phones and computers can easily compress PDFs up to 50MB-100MB.