Image Size Checker — Width, Height & File Size
Upload any image to instantly see its width, height, file size, megapixels, aspect ratio, and print dimensions at 72–300 DPI. Free, no upload to server, works on any device.
✓ Free · ✓ No upload · ✓ Works offline in your browser
Drop image here or click to check size
JPG, PNG, WebP, GIF, HEIC — no upload to server
Frequently Asked Questions
How do I check the size of an image?
Upload your image above and the tool instantly shows the width, height, file size, megapixels, aspect ratio, and print dimensions. No file is uploaded to a server — everything runs in your browser.
How do I find the dimensions of an image online?
Drop your image onto the checker above. It reads the image's natural width and height in pixels directly from the file. You can also right-click any image and choose Properties (Windows) or Get Info (Mac) to see dimensions without uploading.
What does image size mean — file size or pixel dimensions?
Both! 'Image size' can refer to pixel dimensions (e.g. 1920×1080 px) or file size (e.g. 2.4 MB). This tool shows both. Pixel dimensions determine how the image displays on screen; file size determines download speed and storage.
How do I check if an image is 300 DPI for print?
Upload the image above — the tool shows print sizes at 72, 96, 150, and 300 DPI. For print-ready quality, the image should print at your required size at 300 DPI. For example, a 2400×3000 px image prints at 8×10 inches at 300 DPI.
What is a megapixel?
One megapixel equals one million pixels. A 4000×3000 image has 12 megapixels (12 MP). Higher megapixels mean more detail and larger possible print sizes, but also larger file sizes.