Compress PDF
Shrink a PDF by choosing a compression level. It works best on scanned drawings and image-heavy files.
Keeps quality high, shrinks moderately.
150 DPI · 82% qualityA good balance of size and readability.
110 DPI · 65% qualityMuch smaller file, good for sending quickly.
80 DPI · 45% qualityHow to compress a PDF
- Drop the PDFDrag the file into the area above. The original size appears just under the name.
- Pick the levelLight keeps more quality; high gives the smallest file. Medium is usually the best balance for a scanned document.
- Compare and downloadThe tool shows the size before and after. If the result comes out worse, it says so and keeps the original available.
Frequently asked questions
Why did my PDF get bigger after compressing?
Because it is probably a vector file exported from Revit or CAD. Compression turns each page into an image, and that usually weighs more than the original vectors. It works well on scanned documents, not on vector sheets.
Does the text stay searchable?
No. Since every page becomes an image, the text stops being selectable and searchable. If that matters, keep the original file instead.
Are my files uploaded to a server?
No. Everything runs inside your browser, on your own computer, and no file is sent to us or to anyone else. You can check for yourself: once the page has loaded, the tool keeps working with the internet turned off.
Which level should I pick?
Start with medium. If the file is still too heavy to attach to an email, try high and check that it still reads comfortably at the zoom you use.