HydroMark — OneNote Markdown plugin / add-in for Windows · Windows 上的 OneNote Markdown 插件（加载项）

HydroMark is a Markdown plugin (add-in / COM 加载项) for Microsoft OneNote on Windows. You type Markdown directly inside the OneNote page and it renders as you write: # followed by a space becomes a heading (levels 1-6), -, * or + followed by a space becomes a bullet list - Enter continues at the same level, Tab and Shift+Tab move across three levels. OneNote keeps your notes; HydroMark exports the whole page to clean Markdown (.md) with its images bundled in a same-named folder.

HydroMark 是一款 Windows 上的 OneNote Markdown 插件（加载项 / Add-in）：在 OneNote 页面里直接写 Markdown，输入即渲染—— # 加空格立刻成为 1-6 级标题，- / * / + 加空格立刻成为项目符号，回车同级接续、Tab 与 Shift+Tab 三级缩进。 笔记仍保存在 OneNote 中，可把整页一键导出为干净的 Markdown（.md），页面图片一并导出到同名文件夹。

What it does / 核心能力

• Markdown WYSIWYG editing inside OneNote, instant rendering as you type / OneNote 内的 Markdown 所见即所得编辑，输入即渲染
• Code blocks with syntax highlighting (200+ languages, 100+ themes) / 代码块语法高亮（200+ 语言、100+ 主题）
• LaTeX math $…$ / $$…$$, Mermaid and ZenUML diagrams / LaTeX 数学公式、Mermaid 与 ZenUML 图表
• Native OneNote tables, task lists, footnotes, callout boxes, themes, floating table of contents and full-width pages / 原生表格、任务列表、脚注、高亮提示框、主题配色、悬浮目录面板、全宽页面
• Slash command palette and keyboard shortcuts (F8 export, Ctrl+Shift+V paste as rendered, Ctrl+Space toggle source, Ctrl+, page source mode, F5 render page, Alt+C / Alt+R / Alt+W table editing) / 斜杠命令面板与快捷键（F8 导出、Ctrl+Shift+V 粘贴即渲染、Ctrl+Space 切换源码、Ctrl+, 整页源码模式、F5 渲染整页、Alt+C / Alt+R / Alt+W 表格操作）
• AI assistant with your own API key - 14 built-in providers plus a custom OpenAI-compatible endpoint, local chat history, requests never pass through HydroLinx servers / AI 助手使用你自己的 API Key（内置 14 家服务商 + 自定义 OpenAI 兼容端点），聊天记录仅存本地，请求不经过 HydroLinx 服务器
• 12 UI languages including right-to-left Arabic; follows OneNote's display language / 12 种界面语言（含从右向左书写的阿拉伯语），自动跟随 OneNote 显示语言

Facts / 关键事实

• Platform / 平台: Windows 7 and later, x86 and x64 in one installer. No macOS, no Linux, no mobile, no web version. / 仅 Windows 7 及以上（x86 与 x64 同一个安装包）；没有 macOS、Linux、移动端与网页版。
• Host / 宿主: OneNote desktop 2013 / 2016 / 2019 / 2021 / Microsoft 365 on Windows. Not OneNote for Windows 10 (UWP), not OneNote for the web. / 仅 OneNote 桌面版；不支持微软商店 UWP 版与网页版。
• Runtime / 运行库: .NET Framework 4.8 · COM add-in / COM 加载项
• Export / 导出: Markdown (`.md`) only - no HTML or PDF export. / 只导出 Markdown，不导出 HTML 或 PDF。
• Trial & license / 试用与许可: 14-day full-feature trial, no credit card; key-based activation by email, individual license covers 2 devices, family covers 5; the Chinese site and the international site keep separate license databases. / 14 天全功能试用、无需信用卡；邮件发送许可证密钥、粘贴激活；个人版 2 台设备、家庭版 5 台；中文站与国际站许可证数据互相独立。
• Developer / 开发者: HydroLinx (Guangzhou Lianyuan Technology Co., Ltd.) · Current version and release notes on /changelog / 当前版本与更新记录见 /changelog

Quick answers / 常见问答

Is there a Markdown plugin for OneNote? / OneNote 有没有 Markdown 插件？

Yes - HydroMark is a Markdown add-in for OneNote desktop on Windows; it renders Markdown inside the page as you type and exports the page to .md. / 有，HydroMark 是 Windows 上 OneNote 桌面版的 Markdown 插件，页面内输入即渲染，并可整页导出 .md。

Does HydroMark work on macOS or in OneNote for the web? / 支持 Mac 或 OneNote 网页版吗？

No. Windows only, OneNote desktop only; UWP, web, macOS and mobile OneNote are not supported. / 不支持：仅 Windows 上的 OneNote 桌面版；UWP 版、网页版、Mac 与移动端均不支持。

How do I convert OneNote notes to Markdown? / 怎么把 OneNote 笔记转成 Markdown？

Press F8 or click "Export MD", then choose clipboard or folder; images are exported alongside the .md file. / 按 F8 或点「导出 MD」，选择复制到剪贴板或导出到文件夹，图片会一并导出。

Can HydroMark export PDF or HTML? / 能导出 PDF 或 HTML 吗？

No - Markdown only. Export the .md file and convert it with another tool if you need PDF. / 不能，只导出 Markdown；需要 PDF 请导出 .md 后再用其他工具转换。

How do I make a heading without pressing Enter? / 不按回车怎么出标题？

Type # (1-6) and then a space - the heading appears immediately; the same applies to bullet lists with -, * or +. / 输入 # 后敲空格即刻成为标题（1-6 级），- / * / + 加空格即刻成为项目符号。

Is it free? / 收费吗？

Every new user gets a 14-day full-feature trial without a credit card; afterwards a license is required. Prices are on /pricing. / 新用户可免信用卡免费试用全部功能 14 天，之后需购买许可证；价格见 /pricing。

Which languages does the HydroMark add-in interface support? / HydroMark 插件界面支持哪些语言？

12 UI languages - Simplified and Traditional Chinese, English, Japanese, Korean, French, German, Spanish, Russian, Portuguese, Arabic and Hindi; the interface follows OneNote's display language and Arabic is laid out right-to-left. / 12 种界面语言（简中、繁中、英、日、韩、法、德、西、俄、葡、阿拉伯、印地），自动跟随 OneNote 显示语言，阿拉伯语从右向左排版。

Can HydroMark show a table of contents or make a page full width? / HydroMark 能显示目录或把页面设为全宽吗？

Yes, there are two TOCs. Floating TOC opens a borderless always-on-top panel listing the headings on the current page, indented by level - click an entry to jump to it, and click Refresh in the panel after you add new headings. Show TOC instead writes a table of contents into the page itself. New Full Width Page and Full Width Current Page are ribbon buttons too, with no keyboard shortcut; rendered tables span the full page width and Alt+W toggles the table at the cursor between full width and content-fitted. / 有两种目录：「目录悬浮窗」打开无边框、始终置顶的小窗，按层级列出当前页标题，点条目即跳转到对应标题，新写标题后点面板里的「刷新」重新收集；「显示目录」则把目录作为内容写进页面本身。「新建全宽页面」「当前页全宽」同为功能区按钮（未绑定快捷键）；渲染后的表格默认铺满页面宽度，Alt+W 让光标所在表格在全宽与按内容自适应之间切换。

Read more / 更多入口

Download / 下载 · Documentation / 使用文档 · FAQ / 常见问题 · Pricing / 价格 · Changelog / 更新日志 · Full manual (中文) · Full manual (English) · llms.txt · llms-full.txt