Compress PDF
Reduce a PDF file's size: re-save it in an optimised form, or use a separate image-only mode for image-heavy files. The page shows the size before and after.
Files you choose stay on your device — they are not uploaded to Tools99.
Workspace: 1. Add files2. Ready3. Working4. Done — download
How this workspace works
- Choose a PDF file.
- Run the compression and compare the before-and-after sizes shown on the page.
- Download the smaller file if the saving is worth it.
Choose a PDF first — compression options appear after your file is added.
Your file never left this device, so there is no server copy to delete. Download again, start over, or continue with a related tool below.
How to use Compress PDF
- Choose a PDF file.
- Run the compression and compare the before-and-after sizes shown on the page.
- Download the smaller file if the saving is worth it.
A good use for this
Shrinking a PDF so it fits an upload limit on a job, visa, or exam portal, or sends more easily by email.
Limits
Compression re-saves the file in an optimised form; it cannot shrink a PDF that is already mostly compressed images by much, and the page says so when the saving is tiny.
Step-by-step guide: How to use Compress PDF.