dsh-widescreen

On a 2K or 4K external monitor, the DeepSeek Harness web UI still pins the session detail page to a fixed 748 px content column, leaving large bands of dead space on either side and squeezing long conversations into a narrow reading area. dsh-widescreen solves exactly that: a single toggle under Settings → General expands the chat column, date dividers, question cards, and the composer to fill the full width of the center pane, eliminating the wasted whitespace.

The implementation is deliberately minimal. Instead of hard-coding a new pixel width, the plugin redefines the component-scoped CSS variable that every width-limited element reads from, setting it to a container-relative 100 %. Because the value is relative rather than absolute, browser zoom, window resizing, and narrow-viewport behavior all keep working exactly as before. The preference is persisted in the DSH user-settings document, so it survives page reloads and service restarts. Turning the toggle off—or uninstalling the plugin—restores the stock 748 px layout with zero residual styles or attributes.

If you use the DSH web interface on a wide external monitor and find the default layout leaves too much empty space on both sides, dsh-widescreen is a zero-cost, zero-risk upgrade. No code changes, no build step, no preparation authorization—just install and flip the switch.