How to convert PDF to smaller PDF – Compress PDF online
- Upload – click “Choose files” or drag your PDF files into the box above (.pdf).
- Adjust settings – optionally choose compression strength.
- Convert – press the button; Kitbly processes your file on a secure server in seconds.
- Download – save your smaller PDF. The file is deleted from our servers automatically after 1 hour.
About Compress PDF
Shrink big PDFs so they fit email attachments and online form limits (often 2–10 MB). Choose how strong the compression should be; we never make your file bigger.
Frequently asked questions
How much smaller will my PDF get?
PDFs with photos often shrink by 50–90%. Text-only PDFs are usually already small.
Which level should I choose?
Recommended is best for most files. Extreme gives the smallest file with lower image quality.
Is Compress PDF free?
Yes – completely free, with no account, no daily limit and no watermark.
Are my files safe?
Files are sent over an encrypted HTTPS connection, processed automatically by our servers, never shared and permanently deleted after 1 hour. Nobody looks at your documents.
Do I need to install software or sign up?
No. It works in any browser on Windows, Mac, iPhone and Android. No account needed.
Is there a watermark?
Never. Your converted files are clean, with no watermark or branding.