How to compress a PDF without uploading it
Shrink a PDF so it is small enough to email or upload, while it stays on your own computer the whole time. No website, no upload, no account.
Why keep it local
Most 'compress my PDF' websites ask you to upload the file to their server first. That means a copy of your document sits on someone else's machine, if only for a few minutes.
The Little Beaver PDF Editor does the compression on your PC. The file is read, shrunk and written back locally — it never touches the network.
Compress in a few clicks
Install the app from the Microsoft Store and open your PDF. Pick 'Compress' and choose a target size or quality level.
Scanned pages and photos are re-encoded with lighter settings; text stays selectable. You can preview the result before saving.
Check the result
Save the compressed file and compare its size with the original. For image-heavy scans you often get 70–90% smaller files.
If text looks fuzzy, raise the quality one notch and try again. Because everything runs locally, you can experiment as many times as you like.
