Compress PDF to 100 KB

Need a PDF under 100 KB? Add your file, keep 100 KB selected and press Compress. The tool tries stronger settings until it fits. Your PDF stays on your device.

  • Free
  • 100% private
  • No signup
Drop a PDF here or tap to choose
Scans, forms, certificates, photos in a PDF. Nothing is uploaded: it all happens on your device.

Compress PDF to 100 KB: free online tool

Some online forms, exam portals and job sites accept only very small PDFs. This page is set to 100 KB already: add your PDF, press Compress PDF and download the result.

The tool saves each page as a picture and tries a lighter and then a stronger setting until the file is under 100 KB. Nothing is uploaded: the work happens in your browser.

How to compress a PDF

  1. Drop your PDF on the box or tap it to choose a file.
  2. Choose how small you want it: Light, Recommended or Smallest. For a form with a size limit, tick I need an exact size and type it.
  3. Press Compress PDF and wait a moment while the pages are processed.
  4. Check the before and after sizes and the first page, then press Download PDF.

Tips

  • This is a very small limit. It works best for a document of one to three pages, such as a certificate, a mark sheet or an ID card scan.
  • Switch on Black and white for scanned text. It often brings the size down a lot more.
  • A long PDF may not fit. Split it into parts first, or choose a larger size.

Compress PDF to 100 KB: common questions

Add your PDF on this page. The 100 KB size is already chosen, so just press Compress PDF. The tool tries stronger and stronger settings until the file is under 100 KB, then you can download it.

Not always. A short document made of scans or photos usually does, but a long PDF may not. If it does not fit, the tool tells you the smallest size it reached. Try Black and white, or split the PDF into parts.

Yes. Untick "I need an exact size" to pick Light, Recommended or Smallest instead, or type any other size.

Yes. It is free, needs no account, has no daily limit and does not add a watermark.

No. The PDF is opened and rewritten inside your browser. It never leaves your device, so private documents stay private.

Tick "I need an exact size", type 200 (or 100) and choose KB, then press Compress PDF. The tool tries stronger and stronger settings until the file is under your limit. A very long PDF may not reach a very small limit, so try Black and white too.