There’s an area that is often overlooked in SEO and that’s images. Just like the words on a website, images generate traffic and links, too.
In terms of aesthetics, images are an integral part of website design. They break up a copy-heavy page and give site visitors instant visual stimulation. In terms of SEO, images can be optimized and bring additional visitors to a website. Actively using images as part of your overall optimization strategy can pay dividends.
Image Search Optimization Tips
Image naming: Give image filenames a title that reflects the content and is descriptive such as “Sony Ericsson C905” instead of “SEC905.jpg”. Make the image names of your files match what is actually represented in the file. Don’t stuff your Alt Tags full of keywords though- especially ones that don’t relate to the rest of your page as they run the risk of being seen as spam.
Image linking: Boost internal linking and traffic by linking images to relevant articles and/or blog posts on your website. If you are sending out press releases or contributing articles to other websites, provide an image link.
Image quality: Good quality pictures with high contrast tend to work better. Make necessary resolution adjustments between your full size images and your thumbnails.
Image formatting: Photos saved as JPG files and other graphic image types as GIFs are the preferred image formatting.
Image freshness: Keep images fresh. If you’re targeting high popularity keywords it’s worth re-uploading images. Image freshness is a contextual clue for the search engines and could affect relevancy.
Image appearance: Further increase relevancy by optimizing the page the image appears on. Search engines look at text surrounding an image to determine relevancy.Text within the anchor tag and next to anchor text is especially going to influence image-search rankings.
Image duplication: Avoid duplicate image content on the website. If for example, you have a thumbnail, a medium size image, and a full size image, you don’t want these to all be indexed. The best way to handle this is to use robots.txt to prevent the crawler from looking at the versions you don’t want indexed.
Image filter: Enabled image search option at Google webmaster tool.