Compress Image
About Contact

Image Size Checker

Check width, height, file size, megapixels and aspect ratio.

Drop images here or click to browse

Processing happens on your device. Nothing is uploaded.

100% Private

Files are processed locally in your browser. They never touch our servers.

Smart Defaults

Sensible settings are applied automatically. Fine tune them only if you want to.

Batch Processing

Drop multiple images at once and download everything together as a ZIP.

How to use Image Size Checker

  1. Drop your images onto the page, or click to pick them from your device
  2. Use the default settings, or adjust the options for your file type and target result
  3. Download the finished images one by one, or save the full batch as a ZIP

What Image Size Checker is for

Use this tool when you need a fast, private way to prepare images for websites, upload forms, email, social media, ecommerce listings, documentation or everyday sharing.

  • Prepare images for websites, email, upload forms and social media.
  • Process one image or a batch of images directly in your browser.
  • Download finished files without creating an account or adding a watermark.
  • Keep your image workflow private by avoiding unnecessary uploads.
Privacy note: This tool runs locally in your browser. Your selected image files are not uploaded to CompressImage.ca. Read more on our promise page.

Best practices for better results

Image optimization works best when you choose the right balance between file size, visual quality, dimensions, format compatibility and privacy. These tips help you get a cleaner result.

  • Start from the original image whenever possible.
  • Review the output before publishing or deleting your original file.
  • Use related tools like resize, convert or metadata removal when you need a more specific result.
  • Choose the right format for the job: JPEG for photos, PNG for sharp graphics and WebP for modern websites.

Find image dimensions and file size

The Image Size Checker shows the pixel width, height, file size, format, aspect ratio and megapixels for an image. It is useful before resizing, compressing or uploading a file to a form with strict size limits.

File size vs image dimensions

File size is the storage weight of the image, such as 500 KB or 2 MB. Dimensions are the width and height in pixels, such as 1200 × 630. A large file can often be fixed by resizing dimensions first and then compressing.

Related image tools

These tools solve similar image optimization problems and work the same way: locally in your browser, with no required upload.

  • Compress Image: Reduce the file size of JPG, PNG and WebP images
  • Compress JPEG: Reduce JPG file size with smart quality compression
  • Compress PNG: Optimize PNG files losslessly for smaller downloads
  • Compress WebP: Make WebP images even smaller with adjustable quality

Image Size Checker FAQ

Is Image Size Checker free to use?

Yes. Every tool on CompressImage.ca is free to use, with no signup, no watermarks and no daily limits.

Are my images uploaded to a server?

No. Processing happens locally in your browser using your own device. Your files never leave your computer or phone.

What image formats are supported?

JPG, PNG and WebP work across the main tools. AVIF and HEIC are supported in the tools that specifically mention them.