Image Dimensions Checker
Upload an image and instantly see its width × height, aspect ratio, megapixel count, file size, format and stored DPI (when available). Useful before resizing, cropping or submitting images to portals that require exact dimensions. Reads the file directly in your browser.
Your files never leave your device. All processing happens on your device. No uploads, ever.
How to use Image Dimensions Checker
- 1
Upload an image
Choose a JPG or PNG from your device.
- 2
Read the details
Dimensions, ratio, size, format and DPI are shown instantly.
Everything about your image at a glance
Dimensions, aspect ratio, megapixels, file size, format and DPI are read straight from the file. No uploads, no waiting.
Aspect ratio made clear
The ratio is shown as reduced integers (e.g. 16:9 or 4:5) so you know the image shape at a glance.
Private and instant
The image is read entirely on your device — nothing is uploaded to any server.
Frequently asked questions
What information does it show?
Pixel width and height, aspect ratio, megapixels, file size, format (JPG/PNG) and the stored DPI when the file includes it.
Which formats are supported?
JPG and PNG. Their dimensions are read straight from the header.
Is my image uploaded?
No. Everything is read locally on your device.
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Last updated 7 August 2026