Compress PDF
Reduce the file size of large PDFs for easier sharing and emailing. This works by rasterising pages, so it's most effective on scanned or image-heavy documents — and it runs entirely in your browser.
100% in your browserfiles never uploadedno sign-up
Your files are processed in your browser and never leave your device.
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How it works
- Upload a PDF.
- Choose a compression level (strong, balanced, or light).
- Click Compress — pages are re-rendered and re-saved locally.
- Download the smaller PDF and compare the before/after size.
Frequently asked questions
Will the text still be selectable?⌄
No. Compression rasterises each page (text becomes part of the image), which is why it shrinks scanned PDFs so well but isn't ideal for text-only documents.
Why didn't my PDF get smaller?⌄
Text-only PDFs are already compact. This tool gives the biggest savings on scans and photo-heavy PDFs.
Are my files uploaded to compress them?⌄
No. Compression runs entirely in your browser by re-rendering pages locally; your PDF never leaves your device.