Resize Image to A4 Size (210 x 297 mm)

A4 paper measures 210 x 297 mm. At 300 DPI, the resolution needed for clean printing, that works out to 2480 x 3508 pixels. Upload your image below and crop it to the A4 ratio so it fills the page without stretching.

A4 Size in Pixels at Different DPI

72 DPI	595 x 842 pixels (screen only)
150 DPI	1240 x 1754 pixels
300 DPI	2480 x 3508 pixels (recommended for print)
600 DPI	4961 x 7016 pixels

About A4 Size

Printers work in dots per inch, not pixels, so a file sized for the screen is rarely ready for paper. Preparing the image at 2480 x 3508 pixels means the printer has a real 300 DPI of detail across the full A4 sheet rather than upscaling a smaller file and producing soft edges.

How to Resize an Image to A4 Size

Click Upload File and choose a JPG or PNG image.
Drag and scale the crop box over the part of the picture you want to keep.
Click Download to save the image at 2480 x 3508 pixels, the 300 DPI equivalent of A4 Size.
Need a different DPI? Use Manual Resize and enter the values from the table above.

Frequently Asked Questions

What size is A4 in pixels?

At 300 DPI A4 is 2480 x 3508 pixels. At 150 DPI it is 1240 x 1754, and at 72 DPI it is 595 x 842.

What DPI should I use for A4 printing?

300 DPI is the standard for photo and document printing. 150 DPI is acceptable for large posters viewed from a distance, and 72 DPI is screen only.

Related Print and Photo Sizes