A4 is the world's most common paper size — used for documents, posters, flyers, and formal correspondence. Cropping an image to A4 proportions ensures it fills the page perfectly when printed without white bars or unwanted scaling.
A4 Image Dimensions
| DPI / Quality | Pixel Dimensions |
|---|---|
| 72 DPI (web only) | 595×842 px |
| 150 DPI (standard print) | 1240×1754 px |
| 300 DPI (high quality print) | 2480×3508 px |
| 600 DPI (professional print) | 4960×7016 px |
A4 has an aspect ratio of approximately 1:1.414 (or √2:1), which means it is a tall, narrow rectangle in portrait orientation.
How to Crop to A4 Size Online
Visit imgresizr.com and upload your image. Open the Crop tool. Enter custom dimensions matching the A4 ratio. For 300 DPI print quality, enter 2480 for width and 3508 for height. Make sure your crop composition is aligned as you want it on the page — A4 is portrait by default. Apply the crop and resize if needed, then download as JPG (for photos) or PNG (for graphics with text).
Tips for A4 Image Printing
- Always use 300 DPI dimensions for print — anything lower will appear blurry on paper
- Leave a 5mm bleed margin if the image is for professional printing — add 60px extra on each side at 300 DPI
- For landscape A4, swap the dimensions: 3508×2480 px at 300 DPI
- If printing at home, save as the highest quality JPG setting your software allows
Common A4 Use Cases
A4 image crops are needed for flyers, posters, certificates, document headers, brochure covers, and photo prints. imgresizr.com makes cropping to precise A4 dimensions free and instant.