Compress PDF
Reduce a PDF's file size where possible. Lossless — your file looks identical, just smaller.
1. Upload your file
How does the Compress PDF work?
Reduce a PDF's file size while keeping it visually identical to the original. Drop your PDF into the upload area and click Compress. The tool removes duplicate data and unused metadata from the file structure, then shows you the before/after sizes and how much you saved. For PDFs that are mostly text and vector graphics (Word exports, web-generated docs), expect 10–40% savings. PDFs dominated by high-resolution scanned images have less to remove and may shrink only slightly. The compression is lossless — your file is visually unchanged, just smaller. If a PDF is already well-optimized, the tool may report "no reduction possible" and return the original size, which is the honest answer.
🔒 Security & Privacy
All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.
📱 Use it on any device
Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.
⚡ Quick & easy
Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.
🎁 Always free, no signup
Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.