Image Dimension Checker
Read the essential properties of any common image before resizing, cropping or uploading it.
Use the free Image Dimension Checker
This tool runs locally in your browser. Your selected image is not uploaded to this website.
How the result works
Image dimensions are measured in pixels and describe the digital canvas, not the physical print size. This checker also reduces the width and height to a simple aspect ratio and identifies portrait, landscape or square orientation.
- Check requirements before uploading to another service
- Preserve aspect ratio while resizing
- Keep the original dimensions for future edits
Common questions
What are image dimensions?
They are the number of pixels across the width and height of an image, such as 4032 × 3024.
Is image size the same as file size?
No. Dimensions describe pixels; file size describes storage used after encoding and compression.
Can I check HEIC dimensions?
Browser support varies. Use the HEIC converter first if your browser cannot preview the file.