Technical SEO
Image Optimization
Image optimization is the process of reducing image file sizes and ensuring they are technically and contextually optimized for both search engines and user experience. It encompasses compression, correct format selection (WebP, AVIF), descriptive filenames, alt text implementation, responsive srcset attributes, and lazy loading.
Image optimization impact is measured through Google PageSpeed Insights and Lighthouse, which audit image format, compression, and sizing. Screaming Frog's image report identifies missing alt text, oversized images, and non-descriptive filenames. Google Search Console's Image performance tab tracks impressions and clicks from Google Image Search.
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Related Terms
Content
Alt Text
The alt text tag helps search engine bots to make sense of a given image. Alt text tags are visible to both visitors and engine bots.
Technical SEO
Compressing Images
Refers to the process of optimizing and resizing images in order to increase the loading speed of pages.
Technical SEO
Image Sitemap
Sitemaps that list URLs containing visual content.
Technical SEO
WebP
Refers to an image format designed to create files that are smaller for the same quality.