Reduce PDF and image file size for email and uploads in seconds. Your files never leave your browser, so even sensitive documents stay private.
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Working…
Simple by design
Choose a file up to 100 MB. It never uploads anywhere, everything happens on your device.
High for crisp documents, Balanced for everyday email, Maximum for the smallest possible file.
Get your smaller PDF instantly. No account, no watermark, no waiting room.
Good questions
Yes. Compressing PDFs is completely free with no signup, no account, and no watermark stamped on your files.
No. ShrinkPDF compresses your PDF entirely inside your own browser using local processing. Your files never leave your device, which makes it safe for contracts, resumes, and other sensitive documents.
PDFs that are mostly text are already very small, so there is little to squeeze out. Compression works best on PDFs with large images, photos, or scans. ShrinkPDF tells you honestly when a file is already optimized instead of pretending otherwise.
You can compress PDFs up to 100 MB. Very large files may take a little while because all the work happens on your own device rather than a server.
You control the tradeoff. High quality keeps documents crisp with a modest size reduction, Balanced is ideal for email attachments, and Maximum compression gives the smallest file with some visible softening on images. Text stays readable at every level.
No. Password-protected PDFs cannot be opened by the compressor. Remove the password first, then compress the unlocked file.
Yes. Switch to the Image tab to compress JPG, PNG, and WebP photos. Images are converted to efficient JPEGs at your chosen quality, right in your browser.
ShrinkPDF is free and always will be. If it saved you from an email attachment limit today, a small tip keeps the servers (well, the domain) paid.