ImageTools

Image Size Checker

Quickly check an image's dimensions in pixels, file size in bytes, and format. Useful before uploads with dimension or size restrictions, or to verify a resize or compression result. The file is read locally - nothing is uploaded.

Drop an image here, or click to choose a file

Processed in your browser — your image never leaves your device.

Private by design: Image Size Checker runs entirely in your browser. No upload, no account, no watermark.

How to image size checker

  1. Drop your image into the upload area.
  2. Read the dimensions, file size and format.
  3. Need changes? Jump to the Resizer or Compressor from the related tools.

Frequently asked questions

What do the numbers mean?

Dimensions are width x height in pixels. File size is the storage size of the file, not the pixels - a compressed image can have large dimensions and a small size.

Which formats can I check?

Anything your browser can decode: JPG, PNG, WebP, GIF (first frame), BMP and more.

Are my images uploaded to a server?

No. The file is read locally in your browser; your images never leave your device.