A PDF that's too large to email or too slow to upload doesn't need to stay that way. Compress PDF re-optimizes embedded images and internal file structure to shrink the file down, usually with no visible difference in quality. Upload your file, run the tool, and download the smaller version — free, with no page or watermark restrictions.
How to compress pdf
- 1
Upload your PDF file
Drag it onto the upload area, or click to choose it from your device.
- 2
Select Compress PDF
Choose the tool from the list — no extra settings needed for most files.
- 3
Click Compress
Your file is processed on our server, which is what lets the compression engine re-optimize embedded images more aggressively than a browser-only tool could.
- 4
Download the smaller file
Compare the before/after size shown on the result screen, then download.
Why use RealPDFTool for compress pdf
Real size reduction, not just re-saving
Embedded images and internal structure are re-optimized, not just passed through — most scanned or image-heavy PDFs shrink noticeably.
Barely any visible quality loss
The compression is tuned to stay unnoticeable at normal reading and printing sizes.
Frequently asked questions about compress pdf
How much smaller will my file get?
It depends on the file — PDFs full of scanned images or high-resolution photos shrink the most, sometimes by more than half. Files that are already mostly text see a smaller reduction.
Will compressing reduce my PDF's quality?
There's some loss in embedded image quality, but it's tuned to stay barely visible at normal viewing and printing sizes.
Is there a file size limit?
PDFs up to 100MB are supported, since Compress runs on our server rather than in your browser.
Can I compress a scanned document further?
Converting it to grayscale first with the Grayscale tool, then compressing, can shrink it even more if color isn't needed.
Are my files stored on your servers?
Files are processed to run the compression and deleted afterward — they aren't kept or used for anything else.
Can I compress a password-protected PDF?
Remove the password first with Unlock PDF, compress the file, then re-add a password with Protect PDF if needed.