Compress PDF Free Online

How it works

Compress runs locally. We do not store compressed or original PDFs.

1

Pick a mode

Quality presets (extreme / recommended / low) trade clarity for size. Target KB mode binary-searches quality until the file approaches your cap.

2

Run in-browser

pdf.js renders pages; jpeg embedding shrinks the PDF. Very large scans need enough RAM.

3

Check the result

Open the download and verify readability before submitting to a portal.

When you’d use this

Government and university portals often reject scans over 100–200KB. Use target-KB mode instead of guessing quality presets, then spot-check readability before you submit.

FAQ

About compress pdf to 100kb

Can I compress PDF to 100KB or 200KB?

Use Target size (KB) mode. Extremely image-heavy scans may not hit tiny caps without looking blurry.

Will text stay selectable?

Browser compress often rasterizes pages. Use OCR PDF afterward if you need search again.

Is this free?

Yes on the free tier, subject to daily run limits shown in the tool.

Related tools

More private utilities that pair well with this page.

Compress PDF