Image Size Checker

How to use Image Size Checker

1. Select an image from your device.
2. Run the checker to read pixel width, pixel height, file type and file size.
3. Use the result to decide whether the image should be compressed, resized or converted before publishing.

What Image Size Checker does

This image size checker reads common image details in the browser, including file weight and pixel dimensions. It is useful before uploading website images, thumbnails, documents, profile photos or ecommerce product images.

When this tool is useful

Image output can change dimensions, format, transparency or compression quality. Compare the downloaded file with the original before publishing it.

Why image size matters for SEO and speed

Large images can slow down mobile pages, delay the largest visible element and increase bandwidth. Before publishing, check whether the image is larger than the space where it will appear. A 3000 pixel image used in a 600 pixel card usually needs resizing or compression.

Recommended next steps

• Use Image Compressor when the file is too heavy.
• Use Image Resizer when the pixel dimensions are larger than needed.
• Use WebP Converter when the browser supports a smaller modern format.
• Keep original files backed up before replacing published images.

Accuracy and privacy

The selected file is handled by browser features used by this page. Review downloaded output before deleting the original file.

Before using the result

• Check that every input uses the expected format or unit.
• Review the complete result instead of relying on the first number or line.
• Keep an original copy when transforming a file or important draft.
• Report reproducible errors through the ToolPinch contact page.