Temporary cloud processing
Compress PDF online
Make PDFs easier to email or upload. Files are processed temporarily and are not stored long term.
Compress PDF
This tool uploads one file temporarily for processing, then deletes it after the response.
Drop PDFs here or browse
One file at a time.
Output options
How It Works
- 1Add one PDF
- 2Pick a compression level
- 3Download the smaller result when available
Common Uses
- 1Fit email attachment limits
- 2Prepare website uploads
- 3Reduce archive size
Limits
- 1Maximum upload size is 25 MB in the MVP
- 2Some already optimized PDFs may not shrink
Quick answer for this tool
Best for
- •PDFs that exceed email or upload limits
- •Scanned files with image-heavy pages
- •Final documents that have already been reviewed
Not for
- •Highly confidential files that cannot use temporary server processing
- •PDFs that are already smaller than the target limit
- •Guaranteed exact targets such as always reaching 1 MB
Privacy
PDF compression uploads one file temporarily for processing, returns the result, and does not store the file for long-term access.
Input and output
- •Input: One PDF file up to the current upload limit.
- •Output: A smaller PDF when compression can reduce the file safely.
Limits
- •Maximum upload size is 25 MB in the MVP
- •Some already optimized PDFs may not shrink
Common failure reasons
- •The PDF is already optimized
- •The file is encrypted or malformed
- •The target size is too strict for the images inside the PDF
FAQ
Is compression local?
No. This tool uses temporary server processing and deletes the file after the response.
Why did my file not shrink?
Some PDFs are already compressed. In that case the original may be smaller than a rewritten PDF.
Related guides
Compress a PDF for email attachmentsReduce PDF size before sending attachments, with notes on quality and privacy.Read guideCompress a PDF to 2 MB or lessA practical workflow for meeting 2 MB upload limits without destroying readability.Read guideCompress a PDF to 1 MB for strict formsHow to handle very small PDF limits for online forms and portals.Read guide