When naming image files, follow a few simple best practices. First, use a clear, human-readable name rather than a generic string of numbers or default camera filenames like IMG_120625.jpg. A name like logo-local-seo.jpg or backyard-pool-excavation.jpg immediately conveys meaning. Use hyphens to separate words — search engines treat hyphens as word separators, while underscores are less ideal. Keep the name concise but descriptive, and include one relevant keyword where it fits naturally; avoid keyword stuffing or unnatural phrasing.
Choosing the correct file type also matters. JPEG (JPG) is typically best for photographs because it offers a balance of quality and compression, while PNG is preferable for graphics, logos, or images requiring transparency. WebP is an increasingly popular modern format offering superior compression and quality for many use cases; where possible, serve WebP with fallback formats for older browsers. Properly compress and resize images before uploading to minimize page load times, since performance affects both user experience and search rankings.
Alt text (alternative text) is another essential element for image SEO and accessibility. Alt tags provide a textual description of images for screen readers and appear in place of an image if it fails to load. Write concise, informative alt text that accurately describes the image while including a relevant keyword when natural. For example, use alt=”residential foundation excavation by licensed contractors” rather than just alt=”excavation” or leaving the field empty. Avoid stuffing keywords into alt text — clarity and relevance are paramount.
Finally, consider contextual signals: place images near relevant textual content, use descriptive captions when appropriate, and include structured data where applicable (for products or recipes, for example). Add image sitemaps or ensure images are included in your existing sitemap so search engines can discover them easily.
Optimizing image file names, formats, sizes, and alt text is a straightforward way to gain incremental SEO advantages while improving accessibility and user experience. Next week, we’ll dive deeper into crafting effective Image Alt tags and provide examples you can apply immediately. I hope this helps.