Image Dimension Checker

Instantly read any image’s width, height, aspect ratio, megapixels and file size — including iPhone HEIC — without uploading anything.

Drop images to inspect, or browse

JPG · PNG · WebP · HEIC · GIF — read privately in your browser

Image details appear here. Nothing is uploaded.

Quick answer

To check an image’s dimensions, drop it into the tool below. FitToKB instantly shows the width, height, aspect ratio, megapixels and file size — read entirely in your browser, with nothing uploaded.

Frequently asked questions

How do I check the pixel dimensions of an image?

Drop the image into the checker above. It reads the file locally and shows width × height in pixels, plus aspect ratio, megapixels and file size.

Does it work for HEIC photos?

Yes — iPhone HEIC/HEIF photos are decoded in your browser, so you can read their dimensions too.

Is my image uploaded?

No. The image is read entirely in your browser and never uploaded or stored.

Can I check several images at once?

Yes. Add multiple files and each gets its own dimension card.

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