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Compress a PDF to 300 KB

300 KB is one of the toughest limits you'll come across. The tool opens with that target already set: drop your file and it adjusts it until it fits.

Compression tool

When you're asked for 300 KB

What quality to expect at 300 KB

At this size, a document with several scanned pages ends up rasterized at low resolution. Large text and the details on an ID card remain readable on screen, but the small print of a contract suffers. If the file has one or two pages, the result is noticeably better.

If your file is already under 300 KB, we give it back untouched: there's no point recompressing something that already fits. And if the target turns out to be impossible, you get the lightest version we could achieve, with a clear notice of the final size.

Common questions about this size

What if my document has many pages?

The size is shared among all of them: the more pages, the less resolution each one gets. With two or three pages the result is still comfortable to read; from ten pages on, a 300 KB target forces a low resolution and small print becomes hard to read. If the form allows it, splitting the document into two submissions is better than forcing an impossible size.

Can I go below 300 KB if I need to?

Yes, the size field accepts any value: type 200 or 150 KB and the tool will try. Keep in mind there's a physical minimum below which the content would stop being visible; when we reach it, we give you the lightest version achieved and tell you the final size instead of handing you an unreadable file.

Guides to understanding PDF file size

See all guides

Need a different size?

Each page opens the tool with that target already set.