How to Use the PDF Page Size & Print Format Reference
-
1
Select a paper series (ISO A, ISO B, ISO C, US formats).
-
2
Choose a DPI (72 for screen, 96 for web, 300 for print).
-
3
View dimensions in mm, cm, inches, and pixels simultaneously.
Practical Example & Use Case
Common Real-World Scenario
Finding A4 at 300 DPI (2480 × 3508 px) for a print-ready PDF canvas in Adobe Illustrator.
Technical Notes & Limitations
Browser Engine Architecture
Pixel calculations assume standard DPI. Actual display depends on the PDF's embedded resolution.
Frequently Asked Questions
What is the difference between A4 and US Letter?
A4 (210×297mm) is the ISO world standard. US Letter (8.5×11in / 216×279mm) is slightly wider but shorter.
What resolution for print PDFs?
300 DPI is the professional print standard. 72–96 DPI is screen-only — insufficient for print.