Native DSH web plugin that previews Word / Excel / PowerPoint files inside the better-sidebar editor, shipped as a separate bundle so the core stays small.
DSH integration
Native runtime
Author-claimed
Safety audit
Unaudited
Last verified
2026-09-03
License
NOASSERTION
01What can it help you accomplish?
Preview Office documents (.docx/.xlsx/.pptx) inside the better-sidebar file explorer
In-browser rendered viewers — docx-preview for Word, Univer sheets for Excel, @aiden0z/pptx-renderer for PowerPoint — auto-matched by file extension
better-sidebar users who receive Office attachments and want to preview them without leaving the editor
Keep the better-sidebar core client bundle small while still offering Office preview
Office renderers shipped as a separate plugin bundle instead of inlined into better-sidebar (~5.9MB full set → 2.2MB compressed)
better-sidebar operators/maintainers who want a slim core and let users opt into heavy viewers on demand
02How to install into DeepSeek Harness
Prerequisites
- better-sidebar `>= 0.6.0` (the release that removed the built-in office viewer); on older versions the plugin's `docx/xlsx/pptx` registration collides with the built-in one
- A DeepSeek Harness `web` profile — the plugin is added to `--profile web` and served by the `dsh web` process
Installation steps
- 01
Run `dsh plugin --profile web add @huanlin/dsh-plugin-better-sidebar-plugin-office` to install the plugin into the web profile
$ dsh plugin --profile web add @huanlin/dsh-plugin-better-sidebar-plugin-office
- 02
Restart the `dsh web` process and hard-refresh the browser (`Ctrl+Shift+R`)
$ dsh web
Verify the integration
- Confirm the plugin file exists: `Test-Path ~/.dsh/profiles/web/node_modules/@huanlin/dsh-plugin-better-sidebar-plugin-office/lib/client.js` should return True
- After restarting `dsh web` + hard refresh, open a `.docx`/`.xlsx`/`.pptx` from the sidebar — the preview should render normally
03DSH integration and capability boundaries
Native DSH web plugin: installed with `dsh plugin --profile web add` and registers file viewers through the `ctx.betterSidebar.registerFileViewer` API in the better-sidebar editor.
Word (.docx) viewer
`.docx` file opened in better-sidebar→Faithful in-browser render via docx-preview (styles / images / tables, Alt+wheel zoom)
Excel (.xlsx) viewer
`.xlsx` file opened in better-sidebar→Univer sheets preset (data + formulas + merged cells + column width / row height)
PowerPoint (.pptx) viewer
`.pptx` file opened in better-sidebar→Browser-native preview via @aiden0z/pptx-renderer with page navigation
Self-contained client component
registered viewer descriptor (mediaUrl strategy, priority 0, title/icon)→Viewers matching the original built-in descriptor shape, so existing file routing and the Side card toggle UI work unchanged
loads/renders failures fall back to a download link
04Who is it for? When not to use it?
Good for
- better-sidebar users who receive Office attachments and want to preview them without leaving the editor
- better-sidebar operators/maintainers who want a slim core and let users opt into heavy viewers on demand
Not for
- Requires better-sidebar `>= 0.6.0` (the release that removed the built-in office viewer); on older versions the plugin's `docx/xlsx/pptx` registration collides with the built-in one (`already registered`).
- Changing the versions of jszip / xlsx / pptx-renderer can reintroduce Node builtin references (SheetJS/JSZip CJS fallbacks, pptx-renderer's PDF.js probe); the client bundle must be verified to contain no Node builtin.
05Compatibility, maintenance and safety notes
- Requires better-sidebar `>= 0.6.0` (the release that removed the built-in office viewer); on older versions the plugin's `docx/xlsx/pptx` registration collides with the built-in one (`already registered`).
- Changing the versions of jszip / xlsx / pptx-renderer can reintroduce Node builtin references (SheetJS/JSZip CJS fallbacks, pptx-renderer's PDF.js probe); the client bundle must be verified to contain no Node builtin.
- When a viewer fails to load or render, better-sidebar falls back to a download link instead of showing the preview.
NOASSERTION · not released as a git tag yet (latest_release: null); README references the npm package @huanlin/dsh-plugin-better-sidebar-plugin-office
06Frequently asked questions
How do I install this plugin in DeepSeek Harness?
Run `dsh plugin --profile web add @huanlin/dsh-plugin-better-sidebar-plugin-office` to add it to your `web` profile, then restart the `dsh web` process and hard-refresh the browser (`Ctrl+Shift+R`).
Which file types does it preview?
It registers three viewers via `ctx.betterSidebar.registerFileViewer`: `docx` (docx-preview), `xlsx` (Univer sheets), and `pptx` (@aiden0z/pptx-renderer). Opening any of these from the sidebar auto-matches by extension.
What better-sidebar version do I need?
better-sidebar `>= 0.6.0` — the release that removed the built-in office viewer. On older versions the plugin's `docx/xlsx/pptx` registration collides with the built-in one and fails with `already registered`.
Why is this a separate plugin instead of built into better-sidebar?
docx-preview / Univer / pptx-renderer inflated the client bundle to about 23MB. Splitting them into this plugin lets the better-sidebar core stay at ~2.2MB compressed, and users who need Office preview install it separately.
What happens if a viewer fails to render?
On load/render failure the plugin falls back to a download link instead of showing the preview, and the three viewers appear as toggleable cards in the Side card settings page so you can enable/disable each one.
07Related DSH workflows
dsh-web
by zhu1090093659
DeepSeek Harness (DSH) Web Plugin Aggregation Ecosystem · Everything is a plugin, distributed via the Creative Workshop
petdex
by crafter-station
A public gallery of animated pets for Codex, Claude Code, DeepSeek Harness, Hermes, OpenCode, Gemini CLI, and more.
j-space-cognition-suite-v3.7
by tiger3807861189
AI cognitive-enhancement skills for agent harnesses inspired by Anthropic's global workspace research. Adds inference-time control and reasoning tools for DeepSeek Harness, Claude Code, Codex and OpenCode.
dsh-deep-whale
by small-tailqwq
DSH Web GUI 鲸鱼娘主题皮肤（深海女仆工坊 maid-atelier：亮/暗双模式）
08Data and sources
DSH web 插件：为 better-sidebar 的编辑器提供 Office 三件套文件预览（`.docx` / `.xlsx` / `.pptx`）。
通过 `ctx.betterSidebar.registerFileViewer` 注册 3 个 viewer（id 与内置一致）：
dsh plugin --profile web add @huanlin/dsh-plugin-better-sidebar-plugin-office
This page is generated from the project’s public documentation, repository metadata and a structured parse of DSH Plugins; last verified on 2026-09-03. Found an error? Submit a correction.
Best DeepSeek Harness Plugins
Twelve plugins worth installing first — picked from the whole catalog, across every category.