What information does the tool show?

Width and height in pixels, aspect ratio (e.g. 16:9), file size in KB/MB, MIME type (e.g. image/jpeg), and megapixels (width × height ÷ 1,000,000).

Does the tool compress or modify my image?

No. The tool only reads the file metadata and natural dimensions using the browser's Image element. The original file is never altered.

Which formats are supported?

Any image format the browser can decode: JPEG, PNG, WebP, GIF, SVG, AVIF, and BMP are all supported in modern browsers.

Image Size Checker

Instantly check an image's dimensions, file size, format, and megapixels.

Upload Image

Related Tools

(i)Image Metadata Viewer

View file info and basic EXIF metadata from uploaded images.

#cImage Color Picker

Click any pixel in an uploaded image to get its HEX, RGB, and HSL color values.

!=Image Diff

Compare two images pixel by pixel and visualize the differences.

FAQ

What information does the tool show?: Width and height in pixels, aspect ratio (e.g. 16:9), file size in KB/MB, MIME type (e.g. image/jpeg), and megapixels (width × height ÷ 1,000,000).
Does the tool compress or modify my image?: No. The tool only reads the file metadata and natural dimensions using the browser's Image element. The original file is never altered.
Which formats are supported?: Any image format the browser can decode: JPEG, PNG, WebP, GIF, SVG, AVIF, and BMP are all supported in modern browsers.

The Image Size Checker reads an uploaded image using FileReader and the Image element to report width, height, aspect ratio, file size, MIME type, and megapixel count — all without any server upload. Ideal for quickly verifying image dimensions before adding them to a project, checking if an image meets platform requirements, or auditing assets.