Compress PDF to 20KB
Need your PDF under 20KB? Drop it below — PDFBison automatically adjusts compression until your file hits the target, entirely in your browser. Nothing is uploaded.
Drop your PDF here
One PDF file · target size 20KB
No sign-up. No watermark. Your file never leaves this device.
How to compress a PDF to 20KB
Add your PDF
Drop the file into the box above or tap Select PDF. Scanned documents, forms, and certificates all work.
Let the target do the work
Press Compress. PDFBison tests progressively stronger settings and stops as soon as your file fits under 20KB — no manual quality guessing.
Check and download
You see the before and after sizes instantly. Preview the result, then submit it to your portal or attach it to your email.
Built for 20KB limits
Private by design
Compression runs entirely in your browser — your files never upload anywhere.
Automatic — no guessing
PDFBison aims directly at 20KB and adjusts settings for you until the file fits.
Honest about quality
PDFBison shows the achieved size and tells you plainly if quality had to drop to get there.