DescribePicture is a browser-based set of AI describers for images and video. The Image Describer writes captions, detailed descriptions and alt text for photos, screenshots, charts and artwork, with output you can copy as plain text or Markdown. Image to Prompt converts a picture into a detailed prompt plus a negative prompt for AI image tools. Describe Video summarizes a clip, highlights key moments and transcribes speech. Bloggers, teachers, marketers and accessibility teams use it to write alt text and descriptions faster.