Compress PDF to 300KB

Drop the PDF here and press Compress to 300 KB. Dozo tries several strengths on the photos and scans inside it and keeps the sharpest version under 300 KB, then downloads it and shows you the new size.

No. The compression runs inside your browser, on your device. That matters for ID cards, certificates and mark sheets.

Exam and job application forms, government portals, and college or scholarship sites often refuse an ID, certificate or mark sheet over a set size. The size they want is on the upload page; if it is not 300 KB, change the number above the button.

On our test files (7 Nov 2026): a one-page scan went from 1.1 MB to 235 KB and stayed readable, a five-page scan from 5.4 MB to 241 KB, a CV with a photo went from 2.5 MB to 148 KB with its text still selectable, and a one-photo PDF from 5.6 MB to 264 KB. A 30-page typed report with a whole font inside (487 KB) stayed over.

Not every one. Dozo won’t make a page you can’t read just to hit a number: it stops there, gives you that file and says it’s still over. If shrinking the photos isn’t enough, it turns pages into pictures and tells you, because the text can then no longer be selected. For a long document, Split PDF makes parts that fit.

Typed text stays sharp and selectable unless Dozo says the pages became pictures. Scans and photos get softer the more they are shrunk, so zoom in on the result before you send it.

Portals count it both ways, so Dozo aims under 300,000 bytes: the file passes either way.