PrintPixelImage Resolution Checker
Find out the true resolution of any image — pixel dimensions, megapixels, aspect ratio, orientation, format and file size. Analysis happens locally, so your image is never uploaded to a server.
What the checker reads from your image
Pixel dimensions
The true width and height in pixels, read directly from the file. These are the numbers that determine how large the image can be printed before it looks soft.
Megapixels
Total pixels in millions — width × height ÷ 1,000,000. A 12 MP image from a phone is around 4032 × 3024 pixels, for example.
Aspect ratio & orientation
The shape of your image (such as 4:3, 3:2 or 16:9) and whether it's landscape, portrait or square — useful before ordering prints so you know if cropping will be needed.
Format & file size
The format detected from the file and its size on disk. Where EXIF resolution metadata is safely available it is shown too.
From resolution to print size
Resolution on its own doesn't tell you how large you can print — the target PPI does.
The same 4032 × 3024 pixel image prints at about 13.4 × 10.1 inches at 300 PPI (close-up quality) and at about 26.9 × 20.2 inches at 150 PPI (poster viewing from a distance). The image's resolution doesn't change; the same pixels are simply spread over more paper, which is why a larger print can look softer up close.
To turn your image's real dimensions into an actual print size — with a quality verdict for your chosen viewing distance — use the image print size calculator. For a quick pixels-to-inches estimate at any PPI, the DPI / PPI calculator does that in one step.
Frequently asked questions
What does image resolution mean?
Image resolution is the number of pixels in your image — its width and height in pixels, often described together as a megapixel count. It determines how much detail the image holds and therefore how large it can be printed before it starts to look soft.
What's the difference between pixels and megapixels?
Pixels are the individual picture elements that make up an image. A megapixel is one million pixels. A 4032 × 3024 pixel image is about 12 megapixels, because 4032 × 3024 = 12,192,768 pixels. The checker reports both.
Why do pixel dimensions matter for printing?
Pixels are spread over paper at a set resolution (PPI). More pixels at the same print size means a sharper print; the same number of pixels over a larger print means a softer one. Knowing the real dimensions lets you estimate the largest size that will still look sharp.
How does this relate to print size?
Divide your image's pixel width by the PPI you want (300 for close-up prints, 150 for posters) to get the printable width in inches. For example, 4032 pixels at 300 PPI prints about 13.4 inches wide. The image print size calculator does this for your exact file.