Enter a URL to instantly check the dimensions of every image on the page — natural file size, rendered size, and visibility, all in one report.
Natural Dimensions
See the original size of each image file
Rendered Size
Compare with how images appear on the page
Complete Analysis
Includes HTML and CSS background images
Note: For best results, enter the complete URL including the protocol (https://).
This tool respects website robots.txt files and privacy policies. Some images may not be accessible due to CORS restrictions.
References and walkthroughs for getting images right on the modern web.
Best Image Sizes for Websites
Recommended dimensions for hero, blog, thumbnail, OG, and favicon images.
Shopify Image Sizes
Product, collection, slideshow, and logo sizes for Shopify stores.
WordPress Featured Image Size
Featured image, default sizes, WebP support, and storage tips for WordPress.
Open Graph Image Size
Per-platform OG image dimensions, required tags, and testing tools.
Hero Image Size
Above-the-fold dimensions, mobile art direction, and Core Web Vitals impact.
Squarespace Image Sizes
Banner, gallery, product, and blog header sizes for Squarespace 7.1.
Webflow Image Dimensions
Hero, CMS, slider, and Ecommerce sizes for Webflow projects.
E-Commerce Product Image Dimensions
Cross-platform product image sizes — Shopify, WooCommerce, BigCommerce, Magento.
Email Header Image Size
Per-client header image dimensions for Gmail, Outlook, and Apple Mail.
Find Oversized Images on Your Website
Why oversized images hurt performance and how to spot them.
Natural vs Rendered Image Dimensions
The difference between an image's file size and how it's displayed.
Image Formats Compared: WebP vs PNG vs JPEG
When to use each format, with file size and quality comparisons.
Image Optimization Checklist
A practical checklist for making site images smaller and faster.
How to Check Image Dimensions on a Website
Three ways to inspect image sizes on any page — devtools, source, and tools.
Other free utilities for working with images and dimensions. Converters run entirely in your browser — files never leave your device.
Image Dimensions Analyzer v1.1.0·Affiliate Disclosure
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