Quick answer
To compress a PDF for free: choose a PDF, then pick a compression level, then compress, compare the sizes, and download. Bussnizz does this in your browser, so the file never leaves your device and there is no sign-up or watermark.
How to use Compress PDF
- Choose a PDF.
- Pick a compression level.
- Compress, compare the sizes, and download.
Where your file goes
Nowhere. Compress PDF runs inside this browser tab using PDF.js and pdf-lib. Your document is read from your device, processed in memory, and the result is saved back to your device. Closing the tab clears it.
Common uses at work
- Shrink a PDF so it fits under an email or upload size limit.
- Make a scan easier to print by flattening it or turning it grayscale.
- Clean up a document before sharing it with a client.
Questions people ask
Are my files uploaded?
No. This tool runs in your browser. Your file is read and processed on your device and never sent to our server.
Why did standard compression barely shrink my file?
Standard mode cleans up the file structure without touching images. For image-heavy PDFs and scans, use Strong.
Will strong compression keep my text?
No. Pages become images, so text can't be selected or searched. Keep the original if you need it.
Do I need an account?
No. Every tool marked In your browser works without signing up, and there is no watermark on the result.
Does it work on a phone?
Yes, in any modern mobile browser. Very large files are easier to handle on a computer because phones have less memory.