Image Size Checker
Check image dimensions, file size, aspect ratio, type, and orientation instantly. Your image stays private because the check runs in your browser.
Size report
Upload an image to see its size details.
Upload an image to see its size details.
Check Image Details Before You Publish
Use this checker before uploading banners, thumbnails, product photos, profile images, or client assets. It gives you the exact image facts in one place, so you can match platform requirements and avoid layout problems.
Why Use This Image Size Checker?
Exact Pixel Dimensions
See the real width and height from the image file, not the scaled size shown in a browser preview.
Private File Handling
The image is read locally in your browser, which keeps personal photos and client files on your device.
Useful Format Checks
Review file weight, MIME type, aspect ratio, orientation, and megapixels before sharing the image.
Copy-Ready Report
Copy the full report into tickets, design briefs, CMS notes, or upload requirement checks.
How this Image Size Checker works
The Image Size Checker reads the selected image inside your browser and reports the facts that matter before you upload, publish, or send the file. It loads the image into a temporary preview, checks the natural pixel width and height, calculates the aspect ratio, and estimates the megapixel count from the real dimensions. It also reads the file size and MIME type from the file itself. No image is sent to a server, so private photos, product images, and client assets stay on your device. Use the report to confirm website image requirements, compare social media dimensions, check whether a photo is landscape or portrait, or copy the details for a design brief. When you reset the tool, the temporary preview is cleared from the page.
How to use this Image Size Checker
Upload an image
Select an image from your device or drop it into the upload area.
Read the report
Review pixel dimensions, file size, aspect ratio, type, and orientation.
Copy or reset
Copy the image details for a brief, or reset the tool to check another file.
Example Usage
Checking whether a website banner meets upload requirements:
Frequently Asked Questions
Can I check image size without uploading it?
What is the difference between file size and image dimensions?
Why do image dimensions matter for websites?
Does the checker change or compress my image?
Can I check WebP and SVG image sizes?
What does aspect ratio mean?
Is megapixel count useful?
Why does my image look smaller in preview?
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The Image Size Checker is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.
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