AI Alt Text Generator

Alt text (alternative text) is an HTML attribute that describes an image's content and function. It serves two critical purposes: accessibility for visually impaired users who rely on screen readers, and SEO by helping search engines understand image content. Well-written alt text improves your image search rankings, enhances page relevance for target keywords, and ensures compliance with web accessibility standards like WCAG.

Aim for 80 to 125 characters for alt text. This length provides enough detail to describe the image meaningfully while staying within screen reader compatibility limits. Many screen readers cut off alt text at 125 characters, so front-load the most important descriptive elements. Avoid extremely short alt text like single words, and avoid overly long descriptions that may be truncated or tedious for screen reader users.

Yes, naturally incorporating relevant keywords in alt text can boost your image search rankings and reinforce page relevance. However, avoid keyword stuffing — the alt text should primarily describe the image accurately. If the keyword fits naturally in the description, include it once. Never sacrifice image description accuracy for keyword inclusion. Google penalizes alt text that reads as spam rather than a genuine image description.

Use empty alt text (alt='') for purely decorative images that do not convey meaningful content, such as background patterns, spacer images, or visual flourishes. This tells screen readers to skip the image entirely, improving the browsing experience for visually impaired users. Never leave the alt attribute completely missing — that causes screen readers to read the file name instead, which is almost always unhelpful.

Absolutely. Alt text is one of the strongest signals Google uses to understand and rank images in Google Image Search. Pages with descriptive, keyword-relevant alt text consistently rank higher in image search results. Since Google Image Search drives significant traffic for many websites, optimizing alt text across your site is a high-impact SEO activity that also benefits overall page relevance and accessibility compliance.