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Image SEO Checker

Audit all images in your HTML for SEO. Find missing alt text, non-descriptive filenames, lazy loading status & format optimization opportunities.

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💡 Image SEO Basics

Why It Matters

  • Images drive traffic through Google Images search.
  • Alt text is essential for accessibility and SEO.
  • Properly optimized images reduce page load time.
  • Descriptive filenames help search engines understand image content.
📖 Alt Text Tips

Writing Good Alt Text

  • Describe the image content accurately and concisely.
  • Include relevant keywords naturally — don't keyword stuff.
  • Keep alt text under 125 characters for screen readers.
  • Decorative images can use empty alt="" (but never omit the attribute).
🎯 Optimization

Image Best Practices

  • Use WebP or AVIF for modern browsers (30-50% smaller).
  • Set width and height attributes to prevent layout shift (CLS).
  • Add loading="lazy" for below-the-fold images.
  • Use descriptive filenames: "red-running-shoes.webp" not "IMG_001.jpg".

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