Compress PDF
Reduce PDF file size to fit an email attachment limit. Clean up the structure and keep the text, or re-encode pages as images for a much smaller file. Runs in your browser, free.
Result
Add a PDF, pick a method and click Convert. You will see the original and the new size side by side.
What to do next
How it works
Add a PDF, pick a method and click Convert. Try Clean up structure first and switch to Re-encode as images if you need more. The result card shows the original and the new size.
PDFs exported straight from Word are mostly fonts, so structure cleanup only trims a little. PDFs full of photos or scans shrink much more in image mode.
Things to know
In an image-mode PDF the text becomes a picture. You cannot search, copy or edit it, and screen readers cannot read it. Use it for submission and archiving only.
If a PDF does not get smaller, you get the original back. Password-protected PDFs must be unlocked first.
Frequently asked questions
What is the difference between the two methods?
Clean up structure removes duplicated and unused data and saves the file again. Text, vectors and search stay intact, but the saving is modest. Re-encode as images redraws each page as a picture, which shrinks the file a lot but removes text selection, search and copying.
Which method is best for a scanned PDF?
A scan is already images, so use Re-encode as images. 150 dpi at quality 75 stays readable and usually cuts the size by half or more.
How do I get under an email attachment limit?
Most work email systems allow 10 to 25MB. If image mode at 100 dpi is still too big, split the PDF and send it in parts.
Do my files get uploaded anywhere?
No. Compression happens entirely inside your browser.