PDF Compressor
Make PDF files smaller so they fit email attachments and upload portals. Choose the compression level and download a lighter PDF with readable text.
Maximum 100 MB per file, up to 5 files at a time.
300+ formats supported
Convert between 300+ file formats in your browser.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert".
How to compress files
- Click the “Choose Files” button to select your files.
- Click on the “Convert” button to start the conversion
- When the status change to “Done” click the “Download” button
Why PDFs get so big
Most of a PDF’s size comes from images: scanned pages and photos stored at high resolution. Text takes very little space. That is why scanned documents compress the most, while text-only PDFs are already small.
Choosing the compression level
Use light compression for documents you will print. Use stronger compression to get under email limits (often 20–25 MB) or upload portals that accept only 1–5 MB. Check that small text is still readable after compressing.
Frequently asked questions
It depends on the content. Scanned and image-heavy PDFs often shrink a lot; text-only PDFs shrink only a little because they are already small.
Text stays sharp in text-based PDFs. In scanned PDFs the text is part of the image, so very strong compression can make it harder to read.
Each PDF can be up to 100 MB.
Files are deleted from our servers automatically after four hours.