Compress PDF Online
PDF ToolsReduce the size of your PDF documents.
Processing and limits
Files are uploaded for this operation. Maximum 25 MB per file. Rendered operations support up to 40 pages; text extraction conversions support up to 60 pages. Review the downloaded result before use.
Successful outputs are marked for deletion after delivery. Interrupted jobs are removed by scheduled cleanup.
Lossless mode optimizes PDF structure without changing image quality. Strong, balanced and light modes downsample images and require Ghostscript. If the result is larger, the original is returned. Signed PDFs may lose signature validity after rewriting.
Result
Result
What is Compress PDF?
Optimize PDF structure losslessly, or reduce image resolution with light, balanced or strong compression when Ghostscript is available. Keep the original if rewriting makes it larger.
How to use Compress PDF
- 1 Choose the supported source file.
- 2 Select the options shown for Compress PDF.
- 3 Process the document and review the result before saving or sharing.
Supported formats and limits
- PDF input; output as described above
Common uses
- Reduce scanned email attachments
- Prepare reports for upload limits
- Shrink image-heavy handouts
Things to know
- Already optimized PDFs may not shrink. Rewriting can invalidate signatures.
Privacy and file handling
Files are uploaded to the server only to perform the task and are deleted as soon as the download is delivered.
Frequently asked questions
What does Compress PDF do?
Optimize PDF structure losslessly, or reduce image resolution with light, balanced or strong compression when Ghostscript is available. Keep the original if rewriting makes it larger.
What are the important limitations?
Already optimized PDFs may not shrink. Rewriting can invalidate signatures.
Where is my document processed?
On the server for this operation. Successful downloads are marked for deletion; abandoned jobs expire through scheduled cleanup. AI actions send extracted text to the configured provider only with consent.
Should I review the result?
Yes. Check the output before sharing, printing or relying on it. Keep a copy of the original.
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