Check Image Dimensions and Aspect Ratio
Drop one image or a whole folder to see each file's pixel size, simplified aspect ratio, megapixels, orientation, real file type and size — then copy the results as a table or CSV.
How to check image dimensions
- Choose or drop one or more images (up to 200 at a time).
- Read the width × height, aspect ratio, megapixels and orientation for each file in the table.
- Click Copy table to paste the results into a spreadsheet, or download them as CSV.
Supported formats
- Input
- JPG, PNG, WebP, GIF, AVIF, BMP, ICO, SVG
- Output
- Table (TSV), CSV
- Maximum size
- 50 MB per file (limited by your device's memory)
Reading the aspect ratio
The ratio is reduced to the smallest whole numbers, so 1920 × 1080 shows as 16:9 and 1080 × 1350 as 4:5. Some screen sizes don't reduce neatly — 1366 × 768 is exactly 683:384 — so the nearest common ratio is shown alongside when it is within 1.5%. Dimensions respect the EXIF orientation flag, matching how browsers display the photo. To change the size, use the Image Resizer; to change the shape, use the Image Cropper.
Benefits
- Batch mode with a sortable-ready table you can paste into Excel or Google Sheets.
- Reports the real file type from the file's contents, catching mislabelled extensions.
- Simplified aspect ratio plus the closest common ratio for awkward sizes.
Limitations
- Images must be decodable by your browser; HEIC files usually only work in Safari.
- SVG files without width and height attributes have no fixed pixel size and are reported as such.
- Physical print size (DPI) is not shown, since browsers ignore embedded DPI values.
Privacy and security
Each image is decoded locally just long enough to read its size, then released from memory. No files or results leave your device.
Read our privacy policy for details about the site as a whole.
Frequently asked questions
Why are width and height swapped compared to my file properties?
Phone cameras often store photos sideways with an orientation flag. This tool applies that flag, like browsers do, so a portrait photo is reported as portrait.
What is a megapixel?
One million pixels. A 4000 × 3000 photo has 12 megapixels. It describes resolution, not quality or file size.
How do I find the DPI of an image?
DPI is only a printing hint stored in metadata and doesn't change the pixels. For printing, divide the pixel width by the print width in inches: 3000 pixels printed 10 inches wide is 300 DPI.