Compress PDF — reduce file size online
Make large PDFs smaller so they're easy to email, upload and store. PDFEzy compresses your file directly in your browser and only ever hands back the smaller result — your document never leaves your device.
How to compress a PDF in 3 steps
Select your PDF
Pick the file you want to shrink with Select PDF file or drop it into the box above.
We optimize it
PDFEzy re-encodes pages and strips waste, all on your device — nothing is uploaded.
Download
Save your smaller PDF, ready to email, upload or share.
Shrink big PDFs without sending them anywhere
Hit an email attachment limit or a slow upload? PDFEzy's free compress PDF tool reduces your file size so it's quick to send and easy to store. It re-encodes the pages and clears out redundant data, then returns a leaner version of the same document — all without ever uploading your file to a server.
How much you save depends on what's inside. Scanned documents and image-heavy PDFs usually shrink the most, because their pages are re-encoded to a more efficient size. PDFs that are mostly plain text are often already compact, so the reduction can be smaller. Either way, PDFEzy never returns a file larger than the one you started with — you always get the most optimized result.
Why compress PDFs in your browser?
- Private by design: your file is optimized locally and never leaves your computer or phone.
- Email-friendly: a smaller PDF slips under attachment limits and uploads faster.
- No risk: PDFEzy only hands back the smaller result, never a bloated one.
Want to do more first? Combine documents with Merge PDF before compressing, or turn pages into images with PDF to JPG.
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Compress PDF — frequently asked questions
Open the Compress PDF tool, select your PDF, and PDFEzy optimizes it in your browser. Download the smaller file — free, with no sign-up.
Yes. Compression happens locally in your browser and your file is never uploaded, so it stays private.
Image-heavy and scanned PDFs are re-encoded to save space, which slightly reduces image detail. Text-based PDFs keep their structure. PDFEzy never returns a file larger than the original.
If a PDF is already well optimized there is little left to remove, so the reduction may be small. PDFEzy still returns the most optimized version.
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