Compress PDF
Shrink your PDF's file size without losing quality — free, no sign-up.
Drop your PDF here
or click to browse · max file size 50MB
Your file never leaves your device
About this tool
Large PDFs are a hassle to email, upload, or store — especially ones full of scanned pages or high-resolution images. This tool re-encodes the images inside your PDF and cleans up redundant data to shrink the file size, while keeping the document fully readable and print-ready. Everything runs locally in your browser, so your file is never uploaded to a server. That means it works even with sensitive documents, and it's just as fast whether your PDF is 2 pages or 200.
Frequently asked questions
Is this actually free?
Yes, completely — no sign-up, no watermark, no hidden limits. There's nothing to upgrade to.
Does my file get uploaded anywhere?
No. Compression happens entirely in your browser — your PDF is never sent to our servers, so nothing ever leaves your device.
Will compressing reduce quality?
Text and vector content stay exactly as sharp. Embedded images are re-encoded at a high-quality setting by default, so the difference is usually invisible while the file size drops significantly.
Does this work on mobile?
Yes — it works in any modern mobile browser. Just keep in mind very large files may take a bit longer to process on an older phone.