Compress a PDF
Shrink a PDF to fit email and upload limits. Pick how strong, see the size before and after, and keep whichever you like.
This PDF is already well compressed — the result is not smaller. Keep your original, or try a stronger level.
Files stay in this browser tab. Close the page and they are gone.
How it works
- Add the PDF you want to make smaller.
- Choose light, medium or strong compression.
- Compare the sizes and download the smaller file.
Questions
What is the difference between the levels?
Light tidies up the file’s structure and keeps everything exactly as it is, including selectable text — but it only helps some files. Medium and strong redraw each page as an image, which shrinks scanned documents and photo-heavy PDFs a lot, but the text can no longer be selected or searched.
Why didn’t my file get smaller?
Some PDFs are already well compressed. If the result is not smaller, the tool tells you so — just keep your original. For scans, try medium or strong.
Are my files uploaded anywhere?
No. The tool runs entirely in your browser, so your files never leave your device and nothing is kept after you close the page. You can check it yourself: once the page has loaded, turn on airplane mode — the tool keeps working.
Is it free? Is there a file limit?
Yes, it is free, with no sign-up and no watermark. There is no upload limit because nothing is uploaded; very large files are limited only by your device’s memory.