Image Optimization
Quick Definition
Image optimization is the process of reducing image file sizes without visible quality loss. It makes your WordPress site faster and improves Core Web Vitals scores.
What Is Image Optimization?
Reducing image file sizes while maintaining quality. Techniques: compression, WebP/AVIF conversion, correct dimensions, responsive images, lazy loading, image CDN.
WordPress doesn't compress by default. Plugins: ShortPixel, Imagify, EWWW, Smush, Optimole.
Best practices: WebP format, 1200×630px featured images, always add alt text, enable lazy loading.
Why It Matters
Images = 50-80% of page size. Biggest speed win. See our plugins comparison and speed guide.
Related Terms
CDNA CDN (Content Delivery Network) is a global network of servers that delivers your website's files from the location closest to each visitor — making your WordPress site load faster worldwide.Featured ImageA featured image is the main visual that represents a WordPress post or page. It typically appears at the top of articles, in blog listings, and when shared on social media.
Related Articles
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