Compress PDF
PDF & documents · Done in 3 steps
- 1Choose a PDF
- 2
- 3
About
Shrink a PDF in your browser. Lossless mode keeps text selectable; Strong mode turns pages into JPEGs for big savings on scans. See before/after size.
How to use it
- 1Choose a PDF.
- 2Pick Basic (lossless) or Strong (rasterize).
- 3For Strong, choose a resolution and JPEG quality.
- 4Click Compress PDF and compare the before/after size before downloading.
- You give
- One PDF file (up to 100 MB)
- You get
- A compressed PDF, with original and new size shown
- Good to know
- Works best with files under 100 MB (the upload cap); very large files depend on your device's memory. Basic mode only re-packs the file structure, so already-optimised PDFs may not shrink at all — we tell you when that happens. Strong mode rasterizes every page: text is no longer selectable or searchable, links and form fields are removed, and text-only PDFs can get bigger. Basic mode can't process encrypted PDFs.
- Privacy
- Processed on your device. Nothing is uploaded, stored or logged.
- Last tested
- 2026-10-28
FAQ
Why didn't my PDF get smaller?
Lossless compression can only remove wasted structure. If the PDF was already saved efficiently, there is nothing left to squeeze without lowering quality. Strong mode can still help when the file is mostly scans or photos.
What does Strong mode actually do?
It renders each page as an image at the resolution you pick and rebuilds the PDF from those JPEGs. That's very effective for scanned documents, but the text becomes part of the picture, so you can't select, search or copy it any more.
Which settings should I use for email?
Try Strong at 100 DPI and 70% quality for scans — usually readable and a fraction of the size. For text documents, use Basic so the text stays sharp and searchable.
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