Resize Image to A4 (210 × 297 mm)
Resize to A4 to fill a standard 210×297 mm sheet, which at 300 DPI equals 2480×3508 pixels in portrait. A4 is the default paper size everywhere outside North America, so this is the size to use when printing a photo full-page or fitting a scanned document to a sheet. It gives you print-quality resolution across the whole page.
Drag & drop a file here, or click to choose
Filling a full A4 page
A4 measures 210 by 297 mm, or 8.27 by 11.69 inches. At 300 DPI that becomes 2480×3508 pixels, enough detail to print a photo or poster edge to edge without visible pixelation.
It is ideal for making a printable flyer, certificate, or full-page image. The resize runs in your browser, so a document or design you are about to print is never uploaded to an outside server.
Scans, margins, and orientation
When sizing a scanned document to A4, matching 2480×3508 keeps text sharp and lets the page print at true size. Remember that most printers cannot print to the very edge, so leave a small margin for content that must not be clipped.
The tool exports portrait A4 by default. For a landscape layout, swap to 3508×2480. Keep the 1:1.414 A4 ratio in mind, since it lets an A4 image scale down to A5 or up to A3 without distortion.
How to use Resize Image to A4 (210 × 297 mm)
- 1Drop an image into the box above, or click to choose one (JPG, PNG or WebP).
- 2The target size A4 (210 × 297 mm) (2480 × 3508px at 300 DPI) is pre-loaded — adjust it if you need a variation.
- 3The result updates live; download it when it looks right.
Frequently asked questions
How many pixels is A4 at 300 DPI?
2480×3508 pixels in portrait. A4 is 8.27 by 11.69 inches, and multiplying each side by 300 dots per inch gives those pixel dimensions.
What is the aspect ratio of A4?
About 1:1.414, the square root of 2. That ratio lets A4 scale cleanly to A5 (half) or A3 (double) without changing shape.
Should I leave a margin when printing an image to A4?
Yes. Most printers cannot print to the very edge, so keep important content slightly inside the border unless your printer supports borderless A4.