Sometimes you just need to know exactly how big an image is — in pixels and in bytes — before uploading it somewhere with strict requirements. Drop in a file and get its width, height, aspect ratio, megapixels, and file size at a glance.
How to use the image dimensions checker tool
- 1
Upload an image
Drop in any photo or graphic.
- 2
Read the details
Width, height, aspect ratio, megapixels, file size, and format all show instantly.
Common use cases
Check if an image meets a requirement
Verify pixel dimensions and file size against a form or platform's stated requirements.
Compare two versions of a photo
Check dimensions and file size to see what changed between an original and edited copy.
Confirm a resolution before printing
Check megapixels to gauge whether an image has enough resolution for a given print size.
Frequently asked questions
Dimensions (width × height in pixels) describe the image's resolution. File size (KB/MB) is how much storage the file takes — two images with the same dimensions can have very different file sizes depending on compression.