Compress PDF to 100KB

How to use Compress PDF to 100KB

1. Choose your PDF file.
2. The target is already set to 100 KB. You can change the level if you like.
3. Press Compress PDF and download the smaller file.

When people use this

• Single page certificates and ID proofs on portals with a 100KB limit
• Application forms that reject larger PDFs
• Short scanned letters

About Compress PDF to 100KB

This tool compresses a PDF to under 100 KB for strict portal limits. It tries the Medium level first and automatically moves to stronger levels until the file fits, then tells you if it could not reach the target.

100KB is very small. It works well for one or two pages. A long scanned PDF will not fit, so split it first or lower the number of pages.

To get such a small file, each page is turned into a compressed image. This is how scanned documents are usually shrunk, but it means text in the new PDF cannot be selected or searched. Keep your original file if you need that.

Your PDF is processed inside your browser and never uploaded.

Frequently asked questions

How do I compress a PDF to 100 KB?

Choose the PDF and press Compress. The tool tries stronger compression levels one by one until the file is under 100 KB.

Why is my PDF still above 100 KB?

Long or colour heavy documents may not fit. Try removing pages with the Merge and Split tool, or scan in black and white, then compress again.

Will the text still be readable?

Yes, pages stay readable at normal zoom. Text is stored as part of the picture, so it cannot be selected or copied in the compressed file.

Is my PDF uploaded anywhere?

No. The work is done in your browser, so private documents stay on your device.

Are my files safe?

Everything runs inside your browser, so your files stay on your device and are never uploaded.

Last updated: October 17, 2026 · How we write and test