Compress PDF
Reduce PDF file size locally where possible and download an optimized copy.
About, use cases, and privacy
Reduce PDF size locally with honest, device-aware compression.
Compress PDF compares structural cleanup and an optional raster mode, keeps the smallest safe result, and reports the method and actual savings instead of promising an impossible target.
- - Safe, balanced and maximum compression modes
- - Never replaces the source with a larger generated file
- - Clear method, original size, output size and savings report
- - Reduce a document before email
- - Prepare a PDF for an upload limit
- - Optimize scanned pages for sharing
About Compress PDF
Compress PDF is built for the specific pdf file to compressed pdf workflow, not a generic upload page. Use it for upload limits, email attachments, portals, forms, and document packets that need a smaller PDF.
Processing happens locally in your browser where the selected format is supported, so files do not need to be uploaded for the normal workflow. The tool shows file details, output status, download actions, and practical warnings when a browser cannot safely decode or encode a format such as HEIC, TIFF, AVIF, or encrypted PDF.
Best practice: check the exported PDF before sharing, because scanned PDFs and already optimized files may not shrink much in the browser.
Related Workflow Kits
Frequently Asked Questions
The tool rewrites the PDF structure locally with pdf-lib. It does not upload your document to a compression service.