Image Captioning API: Auto-Generate Alt Text and Descriptions

📰 Dev.to · Om Prakash

Learn to auto-generate alt text and descriptions for images using an API and why it matters for accessibility and SEO

intermediate Published 7 May 2026

Action Steps

Sign up for the Image Captioning API to get started
Choose a caption style: concise alt-tags, SEO-rich descriptions, or detailed narration
Make an API call with the image URL to generate the caption
Integrate the generated caption into your website or application
Test the API with different images and caption styles to optimize results

Who Needs to Know This

Developers and designers on a team can benefit from using this API to improve image accessibility and search engine optimization

Key Insight

💡 Using an Image Captioning API can improve image accessibility and search engine optimization