Image Aspect Analyzer Online
Drop in any image and understand its shape at a glance. Get the exact ratio, simplified ratio, dimensions and closest social, photo and screen formats.
A classic landscape photo ratio
See the crop before you commit
Select a target ratio and switch between crop and contain. The live calculation shows how much of the original image stays visible.
Rule-of-thirds grid helps you judge the crop
Image analysis happens locally on your device. Nothing is uploaded, stored or shared.
Know the shape before you publish
An image ratio analyzer turns raw pixel dimensions into information you can actually use. Check whether a photo is square, portrait or landscape, then compare it with familiar formats before cropping or posting.
Exact and reduced ratios
See both the original width-to-height numbers and the clean ratio after the greatest common divisor is applied.
Smart format matching
Find close matches for square posts, portrait photos, Stories, widescreen video, print and social links.
Visual crop confidence
Preview crop and contain modes, see the retained area and get maximum suggested crop dimensions.
How to check an image aspect ratio online
- 01Add an image
Choose, paste or drag a photo into the analyzer. JPG, PNG, WebP, GIF, SVG, AVIF and other browser-supported images work.
- 02Read the ratio analysis
Get pixel dimensions, exact and simplified ratios, decimal value, megapixels, orientation and file details instantly.
- 03Compare common formats
Open a close match in the visual lab to understand cropping before using the image on social media, in video or for print.
How image aspect ratio is calculated
Aspect ratio compares width with height. A 1920 × 1080 image has an exact ratio of 1920:1080. Dividing both numbers by their greatest common divisor, 120, gives the familiar 16:9 ratio. The pixel dimensions describe resolution; the simplified ratio describes shape.
Square and social images
A 1:1 ratio is perfectly square. A 4:5 image is taller and popular for portrait feed posts, while 9:16 fills a vertical Story or short-video screen.
Photos, screens and video
3:2 is common in photography, 4:3 appears in cameras and older displays, and 16:9 is the standard widescreen shape for modern video.
Image aspect ratio analyzer FAQ
How do I find the aspect ratio of an image online?
Drop, paste or choose your image. The online analyzer reads its width and height, simplifies them with the greatest common divisor and displays the aspect ratio immediately.
Is this image aspect ratio checker free?
Yes. It is completely free, requires no account and works as often as you need.
Does the analyzer upload or save my image?
No. The browser reads your image locally. Its pixels and file data are never sent to My Panda Toolbox or another server.
What is the difference between image size and aspect ratio?
Image size is measured in pixels, such as 1920 × 1080. Aspect ratio describes the proportional shape, which is 16:9 for that example. Different pixel sizes can share the same ratio.
Which aspect ratio is best for social media?
It depends on the placement. Square content uses 1:1, many portrait feed posts use 4:5, vertical Stories and short videos use 9:16, and link previews are often close to 1.91:1. Platform specifications can change, so confirm the current requirements before publishing.
Why is my simplified ratio a large number?
Some images have uncommon dimensions that share no large divisor. The exact simplified ratio may therefore stay large, even when it is visually very close to a familiar format. The closest-match cards make that difference easier to understand.
Try other free image tools
Keep working with private tools that run right in your browser.