Compress PDF
Shrink a PDF's file size right in your browser.
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About the Compress PDF
Compress a PDF for free without uploading it anywhere. Pick a compression level — high quality, balanced, or smallest file — and the tool re-renders every page as an optimized image to dramatically shrink scanned documents, image-heavy decks, and reports that are too big to email. You see the before and after sizes instantly, and because everything runs in your browser, your document never leaves your device.
How to use the Compress PDF
- 01Upload the PDF you want to shrink.
- 02Choose a compression level (balanced works for most files).
- 03Click Compress PDF and the smaller file downloads automatically.
Frequently asked questions
Are my files uploaded to a server?
No. Every PDF tool here runs entirely in your browser — your files never leave your device.
Will the text still be selectable?
No — pages are re-rendered as optimized images, which is what makes the file much smaller. The PDF looks and prints the same, but text can no longer be highlighted.
How much smaller will my PDF get?
Scanned and image-heavy PDFs often shrink 50–90%. PDFs that are already mostly compact text may not shrink much.