dsh-plugin-canvas

When you are iterating on HTML prototypes or walking a client through a design, you are usually juggling a browser, a design tool, and your main work app—all while worrying that customer names, internal data, or API keys on the page might slip into a screenshot. dsh-plugin-canvas brings a Canvas Preview tab straight into DeepSeek Harness, so you can open and inspect HTML mockups without leaving your workflow, and blur out anything you do not want exposed, all in one place.

The plugin centres on two capabilities. First, the Canvas Preview tab loads a local HTML file and renders it inside DSH, eliminating the need for a separate browser window. Second, the canvas_preview model tool pairs with a built-in privacy blur that lets you mask any region of the page; the mask is tied to the session, so you do not have to re-apply it when you come back. Every iframe is automatically routed through an isolated sandbox, so untrusted or risky content cannot affect your system. The UI relies on DSH native controls with no extra framework, keeping startup fast and the footprint small.

This plugin is built for people who work with HTML prototypes day to day, need to preview or share designs safely inside DSH, or simply want an extra layer of protection against accidental data leaks during web-page reviews. The current release targets Windows 10/11 (64-bit) and requires DeepSeek Harness to already be installed; total disk usage is under 50 MB.