To optimize images for your website for SEO, follow these steps:

1. **Use Relevant File Names**: Name your image files with descriptive and relevant keywords. For example, use "blue-sneakers.jpg" instead of "IMG1234.jpg."

2. **Add Alt Text**: Include descriptive and keyword-rich alt text for each image. This helps search engines understand the content of the image and improves accessibility.

3. **Choose the Right File Format**: Use appropriate file formats for your images:

   - **JPEG** for photographs and images with gradients.

   - **PNG** for images with text, sharp edges, or transparency.

   - **WebP** for a balance between quality and file size.

4. **Compress Images**: Reduce the file size of your images without sacrificing quality. Tools like TinyPNG, JPEG-Optimizer, or ImageOptim can help with this.

5. **Resize Images**: Ensure images are appropriately sized for your website. Avoid using large images if they will be displayed small on the site. 

6. **Use Responsive Images**: Implement responsive images to ensure they load correctly on different devices and screen sizes. Use the `srcset` attribute in HTML for this purpose.

7. **Implement Structured Data**: If applicable, use structured data to provide additional information about your images. This can help search engines understand the context better.

8. **Add Captions**: When relevant, include captions for your images. Captions can provide additional context and improve user engagement.

9. **Create an Image Sitemap**: If your website relies heavily on images, consider creating an image sitemap to help search engines find and index your images more effectively.

10. **Optimize Image Loading**: Implement lazy loading for images to improve page load times. This ensures that images are only loaded when they are about to be viewed.

By following these steps, you can enhance your website’s SEO and improve user experience.