Compress PDF
Shrinks the file by downsizing the large images in it, keeping reasonable quality. Your file is processed in your browser and never uploaded.
Drag & drop a PDF, or click to chooseOnly .pdf files are accepted
What Compress PDF does
- Shrinks PDFs by downsizing the large images inside them, keeping reasonable quality.
- Text stays sharp — only images are re-encoded.
- Shows the size before and after.
- If the file cannot get any smaller, it tells you instead of giving you a bigger file.
How to compress a PDF
- Choose your PDF, or drag it onto the box above.
- Press Compress.
- The smaller PDF downloads to your device, with the size saving shown.
Compress PDFs without uploading them
Compression runs inside your browser, so the file never leaves your device. Handy for getting a PDF under an email or form upload limit — free, with no account.
Frequently asked questions
How much smaller will my PDF get?
It depends on the images. Scans and photo-heavy PDFs often shrink a lot; PDFs that are mostly text are already small and may not shrink much.
Will the quality drop?
Large images are reduced to a sensible resolution, which is fine for screens and normal printing. Text is not affected.
Is compressing PDFs free?
Yes, with no sign-up and no limit.
Is my file uploaded?
No. The PDF is compressed on your device and nothing is sent to us.