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Compress PDF to 20 KB

Shrink your PDF to under 20 KB for tiny upload limits on exam and job portals. Free and private.

Drop your PDF here

Or click to browse. Your file is read on this device only.

Processed entirely in this browser tab. Nothing is uploaded anywhere.

Do more with your file

Crop PDF

Trim white margins away, with a live preview of the new page.

Flatten PDF

Make filled fields, stamps and markup permanent and uneditable.

Merge PDF

Combine several PDFs into one file, in the order you choose.

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How to compress a PDF to 20 KB

  1. Drop your PDF into the box above.
  2. The 20 KB target is already selected for you.
  3. Press Compress PDF and download the smaller file.

Tip: scanned pages compress the most. For sharp text at small sizes, remove blank or extra pages first.

Questions

How do I compress a PDF to 20 KB?
Drop your PDF above, keep the 20 KB target selected and press Compress PDF. avalpdf finds the highest quality that still fits under 20 KB.
Will the file be exactly 20 KB?
It will be at or just under 20 KB, so it passes upload limits. If your file is already smaller, it is kept as-is.
Is my file uploaded?
No. Compression runs inside your browser tab. Your document never leaves your device.
Is it free?
Yes. There are no sign-ups, no watermarks and no limits.
What if 20 KB is too small for my file?
We stop at the smallest size that keeps pages readable and tell you. Try splitting the PDF or removing extra pages.

Other sizes

PDF to 50 KBPDF to 100 KBPDF to 200 KBPDF to 300 KBPDF to 500 KBPDF to 1 MBPDF to 2 MB