Choose an image
Select a JPG, PNG or WebP to read its actual size and decoded dimensions.
Image Size Checker
Check image dimensions, file size and format against your upload requirements.
Free
No sign-up
Runs in your browser
What is Image Size Checker?
Image Size Checker is a free online image tool from GigaTools. Check image dimensions, file size and format against your upload requirements. It runs entirely in your web browser, so nothing is uploaded and it works on any device without installing software.
Common uses
- Check image dimensions, file size and format against your upload requirements.
- Prepare files without uploading them to a server
How it works
How to use Image Size Checker
Enter requirements
Set the maximum KB and optional exact width and height from your upload form.
Review the checks
See each requirement separately. This checks your entered limits, not every rule a portal might enforce.
FAQ
Good to know
How do I use Image Size Checker?
1. Choose an image: Select a JPG, PNG or WebP to read its actual size and decoded dimensions. 2. Enter requirements: Set the maximum KB and optional exact width and height from your upload form. 3. Review the checks: See each requirement separately. This checks your entered limits, not every rule a portal might enforce.
Does passing guarantee that a form accepts my file?
No. A form can have additional rules, such as a minimum size, specific background or face framing. This tool only checks the requirements you enter.
What are the limits?
JPG, PNG or WebP only. Each input is limited to 20 MB and 16 million pixels. Output is limited to 16 million pixels; contact sheets accept up to 12 files.
Are images uploaded?
No. File processing stays in your browser. This does not remove all third-party requests made by the website.
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