Free tools · Image Tools
Image Dimension Checker
Check exact pixel size, megapixels, aspect ratio and file details.
Open the tool ↓All free tools · Your files stay in your browser
Drop any image to see its exact width and height in pixels, megapixel count, simplified aspect ratio, detected format and file size — parsed locally from the file's own header bytes.
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How it works
- Drop an image file.
- The header is parsed in your browser — nothing is uploaded.
- Read the dimensions, aspect ratio, megapixels and format.
Frequently asked questions
Why do dimensions matter more than DPI?
Pixels are the real content of an image; DPI is just a note about how densely to print them. A 4000-pixel-wide image can print 13 inches wide at 300 DPI regardless of what its DPI label says.
What size artwork should I supply for a custom patch?
Any clear image works — patches are stitched from a digitized file, not printed from your image. Around 1000 pixels on the long side is comfortable; the key is that text and details are legible.