PDF Compressor

How to Compress a PDF

1. Open the Compress PDF tool and drop your file onto the page, or click to browse for it.
2. Pick a preset: Best Quality, Recommended, Small File or Smallest — Best Quality keeps the most detail, Smallest cuts file size the hardest (Smallest and the strongest manual settings come with a free account). Open Advanced options to set scale and image quality yourself.
3. Check the page previews to make sure it is the right file.
4. Click Compress. The file is processed right there in your browser.
5. Download the smaller PDF — ready to email, upload, or archive.

Why Use This Compress PDF Tool

• Four presets, plus manual control. Best Quality for near-original detail, Recommended for everyday sharing, Small File and Smallest when size matters more than sharpness.
• Nothing leaves your device. Compression runs with in-browser code — no server sees a contract, an ID scan, or a set of financial statements just to make it smaller.
• No watermark. Compress a file without creating an account or getting a logo stamped on your pages.
• Works on scanned documents and image-heavy PDFs. Files packed with photos or scans shrink the most — that's exactly where compression makes the biggest difference.
• Already small? We keep your original. If compressing would make the file bigger, you get your original back instead of a worse copy.

FAQ

Which compression level should I pick?

Start with Recommended for a good balance. Pick Best Quality if the PDF needs to stay close to its original look, and Smallest when file size matters most and you can accept visible quality loss.

Will compressing make my PDF blurry?

Each page is re-saved as an image, so the smaller presets lose some sharpness and the text in the result is no longer selectable or searchable. Best Quality keeps pages crisp. That trade-off is what makes image-heavy files so much smaller.

Does this work well on text-only PDFs?

Text-only PDFs are usually already small, so the size reduction will be modest. Compression makes the biggest difference on files with scanned pages or embedded photos.

Is there a file size limit?

Your file size limit is shown on this page, and a free account raises it. Everything runs in your browser, so large files can take a little longer.

Is it safe to compress a confidential PDF here?

Yes. The file is never uploaded — compression happens locally in your browser, so the document stays on your device the entire time.