Compress PDF Online Free - Reduce PDF Size to KB

PDF tool

About Compress PDF

Compress PDF online free and reduce PDF size to a target KB in your browser. No upload and no account required. The work happens in your browser, so the selected PDFs stay on your device while you prepare the result.

Reducing PDF size for email, government portals, job applications and document sharing.

Targeting an approximate KB size when the original PDF contains large scanned pages.

Practical notes

Compression works best on image-heavy or scanned PDFs.
Very strong compression may make text less sharp, so use the preview result before submitting.

Common questions

Can I compress a PDF to a target KB size?

Yes. Enter the target KB value and the tool will try to create a smaller PDF near that limit.

Why can text become less selectable after compression?

Strong PDF compression may rasterize pages, which can turn text into page images.

Which PDFs compress best?

Scanned and image-heavy PDFs usually compress more than text-only PDFs.