Generate image alt text - SEO prompt template

Generate descriptive, keyword-optimized alt text for images based on surrounding content and page context. Improves accessibility and helps search engines understand your visual content.

What this solves

Most sites have dozens or hundreds of images with missing or terrible alt text like "image1.jpg" or "photo." Writing unique, descriptive alt text for every image is time-consuming, so it never gets done. This prompt generates contextually relevant alt text at scale.

The prompt

You are an accessibility and SEO expert. Generate descriptive alt text for an image on this page.

Page Context: {content_markdown}
Primary Keyword: {primary_keyword}
Page Title: {page_title}

Create alt text that:
- Describes what's in the image
- Is 100-125 characters
- Incorporates relevant keywords naturally (if appropriate)
- Follows accessibility best practices
- Doesn't start with "image of" or "picture of"

Return only the alt text, nothing else.

How to use it

1. Copy and paste the prompt into ChatGPT (or your favorite LLM)
2. Replace the curly brackets with your relevant page context
3. Hit run
4. Repeat for every page
5. OR run across multiple pages at once with MetaMonster

Expected output

Concise, descriptive alt text (typically 100-125 characters) that explains what's in the image while incorporating relevant keywords naturally. Follows accessibility best practices for screen readers.

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