Check image dimensions and size online
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Your file never leaves your browser
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Need to quickly check if a photo meets a website's or portal's size requirements? Upload your image and this tool instantly shows its width, height, aspect ratio, file size, and format — entirely in your browser. Nothing is uploaded to a server.
Checking before you upload
Upload forms routinely specify minimum or maximum pixel dimensions alongside a file size cap, and being rejected for dimensions after waiting for a slow upload is a particular kind of frustration. Checking first takes seconds. It is also the fastest way to answer the practical question behind most image problems: is this file too big because it has too many pixels, or because it is stored inefficiently?
What the aspect ratio tells you
The ratio is reduced to its simplest form, so a 1920 by 1080 image reports as 16:9 and a 413 by 531 passport photo reports close to its intended proportion. That makes it easy to check whether an image is genuinely square before uploading it somewhere that requires 1:1, or whether a photo is the right shape for a passport application, without doing the arithmetic yourself.
Nothing is modified
This tool only reads — it does not resize, compress, or re-save anything, and it produces no output file. Your image is loaded in the browser purely to measure it and is never uploaded anywhere. If the numbers tell you something needs changing, the resize and compress tools handle that.
Frequently asked questions
- Does this tell me the exact pixel dimensions?
- Yes, exact width and height in pixels, plus a simplified aspect ratio like 16:9 or 4:3.
- Does this modify my image?
- No, this tool only reads information — it doesn't resize, compress, or change the file at all.
- Are my images uploaded to a server?
- No, everything happens locally in your browser. Nothing is sent anywhere.
- Why does the aspect ratio look unusual?
- It is the exact simplified ratio of your image's pixels. Photos that have been cropped by hand rarely land on a neat ratio like 16:9.
- Does this show EXIF data like camera model?
- No, it reports dimensions, ratio, file size, and format. To strip EXIF metadata, use the remove metadata tool.