Compress a PDF without sending it anywhere
Make a heavy PDF lighter so it fits an email limit or loads faster. This tool recompresses embedded images at a quality you choose and removes objects nothing references.
Live privacy check
How to compress pdf
- Drop in the PDF you want to make smaller.
- Pick a compression level. Balanced suits most documents; Strong is for meeting a hard size limit.
- Click Compress PDF and wait for the status to finish — larger files take longer.
- Compare the reported before-and-after sizes, then download the result.
Why this PDF tool is private
Compression decodes embedded images, re-encodes them at a lower quality, and rewrites the file. That is processor work on your own machine, and it needs no server to complete.
Other tools in this category upload your file to a server, process it in the cloud, and return a download link. That means your document sits on someone else's disk — often with a retention window measured in hours. Here, the file is read by your browser, transformed in memory, and saved straight back to your disk. You can watch it happen in the live check above: the counter for files uploaded stays at zero.