Image Captioning API: Auto-Generate Alt Text and Descriptions Most product catalogues, content feeds, and media libraries have one quiet shame: thousands of images with empty alt="" attributes, no search metadata, and no human-readable description. Writing them by hand does not scale. Here is the endpoint that makes that problem go away. Today we are launching POST /v1/image/caption — a single endpoint that turns any public image URL into a caption tuned for the job you actually have: accessibility alt-tags, SEO descriptions, or full paragraph-length narration. What it does Send a public image URL. Get back text. That is the whole shape of the API. What makes it useful is the style parameter. The same endpoint can produce three very different outputs from the same image, depending on what you are building: concise (default) — tight, alt-text-shaped output. The kind of single sentence you want sitting inside an alt attribute. Screen-reader friendly, no fluff, no marketing language.…