Free · No upload · Automatic target

Compress PDF to 300KB

Need your PDF under 300KB? Drop it below — PDFBison automatically adjusts compression until your file hits the target, entirely in your browser. Nothing is uploaded.

0 bytes uploaded · processing happens on your device

Drop your PDF here

One PDF file · target size 300KB

No sign-up. No watermark. Your file never leaves this device.

Target size: 300KB Need a different limit? 200KB · 500KB · 1MB

Done — under 300KB

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Compress another file

How to compress a PDF to 300KB

Step 1

Add your PDF

Drop the file into the box above or tap Select PDF. Scanned documents, forms, and certificates all work.

Step 2

Let the target do the work

Press Compress. PDFBison tests progressively stronger settings and stops as soon as your file fits under 300KB — no manual quality guessing.

Step 3

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 300KB limits

Private by design

Compression runs entirely in your browser — your files never upload anywhere.

Automatic — no guessing

PDFBison aims directly at 300KB 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.

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