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Compress a PDF
Compress PDF reduces the size of a document so it fits an email or an upload limit. Three levels let you trade size against fidelity, and the result screen reports exactly how much each file saved.
Compression needs tools that do not run in a browser, so this one sends the file to the server, processes it and deletes it within the same request. Files are capped at 50 MB each.
Runs on the server. Files up to 50 MB are processed and deleted in the same request.
How to compress a PDF
Add your PDFs
Drop in one file or several, up to 50 MB each.
Pick a compression level
Low keeps the most detail and high gives the smallest file. The recommended level sits in between and suits most documents.
Compress and download
Each file reports its old and new size, so you can see what you gained before you download.
Questions
- How much smaller will my PDF get?
- It depends what is inside it. Scans and image-heavy documents often shrink by half or more. Word documents that embed their fonts whole — a single emoji can drag in several megabytes of font — can lose almost everything, sometimes 98%. Documents made of vector drawing, such as anything printed through a Print to PDF driver, typically lose about a quarter. A file that is already lean may barely change, and the result screen tells you when that happens rather than claiming a saving.
- Is my file kept on the server?
- No. It is processed and deleted within the same request. Nothing is stored, and there is no account for it to be attached to.
- Why is there a 50 MB limit?
- It stops one job starving the others on a small self-hosted server. Browser-side tools such as Merge and Split have no such cap.
- Will the text still be selectable afterwards?
- Yes. Compression targets images and redundant objects, not the text layer.