dsh-chat-image-lightbox

In DeepSeek Harness, images embedded in AI responses are rendered as static markdown by default — you cannot zoom in, download them, or scroll through a set. dsh-chat-image-lightbox turns every chat image into an interactive visual experience: click to open a full-screen lightbox, zoom further with the mouse wheel, drag to pan, and navigate between multiple images with arrow keys, on-screen buttons, or touch swipes.

When a single message contains several images, the plugin automatically collapses them into a tidy three-column thumbnail grid. Tapping any thumbnail loads the full-resolution original so you see true quality when zooming. Toolbar buttons, navigation arrows, and the caption all hide when the lightbox closes, keeping the chat layout clean. Built-in features include same-origin download with a browser save-as dialog, prefetching of adjacent images for instant navigation, proper ARIA dialog semantics with focus management, and a MutationObserver that automatically enhances any new images appearing in the conversation.

Ideal for developers who work with image content through DSH — analysing, comparing, or annotating visuals without leaving the chat. Supports mainstream formats (jpg, png, gif, webp, bmp, svg, ico); tiff and heic must be converted beforehand. Requires DeepSeek Harness 2.0 or later with the webServer service, and Node.js 22 or above.