Image SEO Best Practices:
12 Rules Every Business Should Follow

Replace camera-generated names (IMG_4821.jpg) with descriptive, hyphen-separated names that include the primary keyword and location. Example: 'emergency-plumber-clearwater-fl.jpg'. Google reads the file name as a relevance signal before it processes the image content.

Alt text is the strongest on-page image SEO signal. Use the formula: [Subject] + [Action/Detail] + [Location]. Example: 'Emergency plumber repairing burst pipe in Clearwater, FL'. Keep it under 125 characters. Never keyword-stuff.

Set the EXIF Artist field to the business name and the Copyright field to the business URL. These fields are read by Google's image indexing pipeline and create entity attribution signals that persist in the image file regardless of where it is published.

Embed the business's GPS latitude and longitude in the EXIF GPS fields. This ties the image to a physical location — a powerful local SEO signal that most competitors never set. Use the exact coordinates of the business address.

Add ImageObject JSON-LD schema to every page with a primary image. Include name, description, author (LocalBusiness), contentUrl, width, and height. This tells Google the image's entity attribution in a machine-readable format and improves rich result eligibility.

Large image files slow page load times and hurt Core Web Vitals LCP scores — a confirmed Google ranking factor. Use WebP format or JPEG at 80–88% quality. Target under 200KB for most images, under 100KB for thumbnails.

Always set explicit width and height on <img> tags. This prevents Cumulative Layout Shift (CLS) — another Core Web Vitals ranking factor. Missing dimensions are one of the most common technical SEO errors on image-heavy pages.

Add loading='lazy' to all images below the fold. Use loading='eager' only for the hero image. Lazy loading defers image downloads until needed, improving LCP for above-fold content and reducing initial page weight.

Beyond EXIF, write the XMP:Description field with the business name, city, niche, and URL. Set XMP:Subject to relevant keywords. These fields are read by Google's structured data parsers and reinforce the entity cluster built by EXIF fields.

Images hosted on your own domain pass link equity and entity signals back to your site. Images hosted on third-party CDNs (e.g., Cloudinary, Imgur) attribute traffic and signals to those domains. Use a CDN for performance, but serve images from your own subdomain (cdn.yourdomain.com).

Submit an image sitemap (or include image tags in your existing sitemap) to Google Search Console. This ensures all your images are discovered and indexed, even if they are not directly linked from the page text. Use the <image:image> extension in your sitemap.

Stock photos are used by thousands of websites. Google's entity graph recognises duplicate images and assigns lower authority to sites using the same image as competitors. Unique, original images — especially those with business-specific EXIF data — receive stronger entity attribution and better rankings.