Free online tool
Compress PDF Online
Reduce PDF file size online while keeping good quality.
Reduce PDF file size online while keeping good quality. Choose your file, review the selected list, then start the tool. The browser sends the file to the processing API and returns a downloadable result.
Compress PDF Online
How it works
Choose your file, review the selected list, then start the tool. The browser sends the file to the processing API and returns a downloadable result.
Compression works best when the PDF contains images, scans, or redundant embedded data. Keep the original file and use the compressed result for sharing, portals, or storage limits.
The result uses the shown output filename as a fallback when the server does not provide a specific download name. compressed.pdf
File limits
One PDF file, up to 50 MB.
The upload area checks file type, file count, and total size before processing so unsupported files can be corrected early.
A text-only PDF may already be small, while photo-heavy scans can shrink much more. If the upload is too large, remove unnecessary pages or split the document before compressing.
Privacy and file handling
Files are used only for the requested PDF task and are removed from temporary storage after processing.
Documents are processed for the compression request you start. Avoid uploading confidential files unless your own policy allows online processing.
Output quality
The tool is tuned for practical everyday documents. Very complex layouts, image-heavy PDFs, or scanned pages can affect the final result.
After download, review signatures, stamps, charts, small text, and scanned pages. A practical compression result should be smaller while remaining readable at normal zoom.
Shrink PDF files for email, upload, or sharing.
Common uses
- Preparing files for email, upload portals, or shared folders.
- Organizing document pages before sending them to clients, schools, or internal teams.
- Finishing small document changes on a phone, tablet, or desktop browser.
- Reducing a PDF so it fits an email attachment limit or government upload portal.
- Preparing scanned paperwork for a shared folder without sending a very large file.
Troubleshooting
- If processing fails, check that the file is not password-protected or corrupted.
- If the upload is rejected, reduce the file size or split the job into smaller batches.
- If the output is not what you expected, try a cleaner source file with standard page sizes.
- If the file barely shrinks, the PDF may already be optimized or mostly text-based.
- If the result is too soft, use the original file and reduce only the pages or scans causing the size problem.
Related tools
Guides
How to compress a PDF without making it hard to read
Learn when PDF compression works well, what affects file size, and how to prepare documents before reducing them for email or upload portals.
GuidesFrequently asked questions
How does PDF compression work?
The compressor rewrites the PDF with size-focused settings that can reduce images and remove unnecessary overhead.
Will the compressed PDF look exactly the same?
Most files keep good visual quality, but very image-heavy PDFs may show some quality reduction after compression.
Do I need to sign up?
No account or login is required. Upload your file, process it, and download the result.
Do I need to create an account?
No. The tool can be used without signup or login.
What happens to uploaded files?
Uploaded files are processed for your request and removed from temporary storage after processing.