Image Inspector
Paste any image URL — get the file size, dimensions, aspect ratio, and a concrete plan to hit your target size with WebP/AVIF.
Image stats
- File size
- Dimensions
- Aspect ratio
- Format
- Color mode
- Megapixels
- Animated
Target size analysis
Optimization suggestions
Resize & download a copy
Generate a resized / re-encoded copy you can re-upload to your CMS or CDN. The original on the source URL is never modified.
Copy-paste HTML
Why image optimization matters for SEO & AEO
Performance
Image weight is the #1 cause of slow pages. Google's Core Web Vitals — particularly Largest Contentful Paint (LCP) — directly score how fast your largest image loads. Pages with heavy images are demoted in both Google search and Google AI Overviews.
- Under 100 KB — ideal for above-the-fold images
- 100-200 KB — acceptable for hero images
- Over 200 KB — starts hurting LCP
- Over 1 MB — breaks Core Web Vitals; Google demotes the page
Modern formats
The single biggest optimization most sites are missing: switching from JPEG/PNG to WebP or AVIF.
- WebP — 25-50% smaller than JPEG/PNG, supported in every modern browser since 2020
- AVIF — 40-70% smaller, supported in Chrome/Firefox/Safari 16+
- Use the
<picture>tag to serve modern formats with a JPEG fallback
Always set width & height
Images without explicit width and height attributes cause Cumulative Layout Shift (CLS) — another Core Web Vital. The HTML snippet above includes them automatically.
Lazy loading
Images below the fold should use loading="lazy" — the browser only fetches them as the user scrolls into range. The snippet above does this by default.