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How to Compress a PDF to 100KB

Shrink your PDF to fit email attachments and upload limits. Free, private, done in your browser.

🆓 Free ✍️ No sign-up 🔒 100% Private

Many websites and email systems cap attachments at 100KB or a few hundred KB. Compressing a PDF to 100KB is easy with PDF EAZY TOOL: the file never leaves your browser, so even personal documents stay private.

Compress a PDF to 100KB in 4 steps

  1. Open the free Compress PDF tool and upload your PDF by dragging it into the page.
  2. Pick a compression level. Start with a medium level if you need to hit exactly 100KB.
  3. Click Compress and wait a few seconds while the pages are re-rendered in your browser.
  4. Download the smaller PDF. If it is still over 100KB, run it through again at a stronger level.
Screenshot: compressing a PDF in your browser

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Frequently asked questions

Is it really free to compress a PDF to 100KB?

Yes. The tool is free with no account and no file-size limits on our side.

Will my PDF be uploaded to a server?

No. Compression runs entirely in your browser, so your document never leaves your device.

Why is my PDF still bigger than 100KB?

Try a stronger compression level, or compress the PDF twice in a row.

Can I compress a PDF on my phone?

Yes. The tool works in any modern mobile browser, and the file still never leaves your phone.