diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index 819e507c74..dc5b5d4ba7 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -106,4 +106,4 @@ Each option in plugin/theme documentation must include:
   - English: "Default: `defaultValue`"
   - Chinese: "默认值：`defaultValue`"
 - **Reference**: Optional, links to relevant documentation (always as list)
-- **Details**: Brief description of purpose/usage, prefer paragraph for long contents.
+- **Details**: Brief description of purpose/usage, prefer same line for short contents and paragraph for long contents.
diff --git a/docs/plugins/markdown/markdown-ext.md b/docs/plugins/markdown/markdown-ext.md
index 6120b7d8d9..76589af9d6 100644
--- a/docs/plugins/markdown/markdown-ext.md
+++ b/docs/plugins/markdown/markdown-ext.md
@@ -140,9 +140,8 @@ You can use any mustache syntax as raw text in `v-pre` container:
 ### footnote
 
 - Type: `boolean`
-- Default: `false`
-- Enabled in GFM: Yes
 - Details: Whether to enable footnote format support.
+- Enabled in GFM: Yes
 
 ### tasklist
 
@@ -166,34 +165,30 @@ You can use any mustache syntax as raw text in `v-pre` container:
   }
   ```
 
-- Default: `false`
-- Enabled in GFM: Yes
 - Details:
 
   Whether to enable tasklist format support. You can pass an object to config tasklist.
 
+- Enabled in GFM: Yes
+
 ### breaks
 
 - Type: `boolean`
-- Default: `false`
+- Details: Whether convert `\n` in paragraphs into `<br>`s.
 - Enabled in GFM: Yes
-- Details: Whether convert `\n` in paragraphs into `<br>`s
 
 ### linkify
 
 - Type: `boolean`
-- Default: `false`
+- Details: Whether convert URL-like text into links.
 - Enabled in GFM: Yes
-- Details: Whether convert URL-like text into links
 
 ### component
 
 - Type: `boolean`
-- Default: `false`
-- Details: Whether to enable component fence support
+- Details: Whether to enable component fence support.
 
 ### vPre
 
 - Type: `boolean`
-- Default: `false`
 - Details: Whether to enable v-pre wrapper.
diff --git a/docs/zh/plugins/markdown/markdown-ext.md b/docs/zh/plugins/markdown/markdown-ext.md
index 4799d756ff..3caec8fec9 100644
--- a/docs/zh/plugins/markdown/markdown-ext.md
+++ b/docs/zh/plugins/markdown/markdown-ext.md
@@ -135,14 +135,13 @@ type: tip
   - 脚注
   - 任务列表
 
-  请注意，一些行为可能和 GitHub Flavored Markdown 不同。
+  请注意：并不是所有行为都与 GitHub Flavored Markdown 完全相同。
 
 ### footnote
 
 - 类型：`boolean`
-- 默认值：`false`
+- 详情：是否启用脚注格式支持。
 - 在 GFM 中启用：是
-- 详情：是否启用页脚格式支持。
 
 ### tasklist
 
@@ -166,34 +165,30 @@ type: tip
   }
   ```
 
-- 默认值：`false`
-- 在 GFM 中启用：是
 - 详情：
 
-  是否启用任务列表格式支持。您可以传递一个对象来配置任务列表。
+  是否启用任务列表格式支持。你可以传递一个对象来配置任务列表。
+
+- 在 GFM 中启用：是
 
 ### breaks
 
 - 类型：`boolean`
-- 默认值：`false`
-- 在 GFM 中启用：是
 - 详情：是否将段落中的 `\n` 转换为 `<br>`。
+- 在 GFM 中启用：是
 
 ### linkify
 
 - 类型：`boolean`
-- 默认值：`false`
-- 在 GFM 中启用：是
 - 详情：是否将类似 URL 的文本转换为链接。
+- 在 GFM 中启用：是
 
 ### component
 
 - 类型：`boolean`
-- 默认值：`false`
 - 详情：是否启用组件代码块支持。
 
 ### vPre
 
 - 类型：`boolean`
-- 默认值：`false`
-- 详情：是否启用 `v-pre` 块支持。
+- 详情：是否启用 v-pre 容器支持。
diff --git a/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/component.ts b/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/component.ts
index b476a313fd..287dcdfbc9 100644
--- a/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/component.ts
+++ b/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/component.ts
@@ -7,6 +7,14 @@ import type { MarkdownEnv } from 'vuepress/markdown'
 import { logger } from '../utils.js'
 import { stringifyProp } from './utils.js'
 
+/**
+ * Get component render function
+ *
+ * 获取组件渲染函数
+ *
+ * @param name - Component name / 组件名称
+ * @returns Render function / 渲染函数
+ */
 const getComponentRender =
   (name: string): RenderRule =>
   (
@@ -46,6 +54,11 @@ ${content}
     return ''
   }
 
+/**
+ * Component fence support plugin
+ *
+ * 组件代码块支持插件
+ */
 export const component: PluginSimple = (md) => {
   // Handle ```component  blocks
   const { fence } = md.renderer.rules
diff --git a/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/utils.ts b/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/utils.ts
index b78742555e..2aa5c60a63 100644
--- a/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/utils.ts
+++ b/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/utils.ts
@@ -1,3 +1,15 @@
+/**
+ * Stringify prop data for Vue components
+ *
+ * 为 Vue 组件字符化属性数据
+ *
+ * @description Single quote will break @vue/compiler-sfc
+ *
+ * 单引号会破坏 @vue/compiler-sfc
+ *
+ * @param data - Data to stringify / 要字符化的数据
+ * @returns Stringified data / 字符化后的数据
+ */
 // Single quote will break @vue/compiler-sfc
 export const stringifyProp = (data: unknown): string =>
   JSON.stringify(data).replace(/'/g, '&#39')
diff --git a/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/vPre.ts b/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/vPre.ts
index 0b46ac88dc..01b3186611 100644
--- a/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/vPre.ts
+++ b/plugins/markdown/plugin-markdown-ext/src/node/markdown-it-plugins/vPre.ts
@@ -1,6 +1,11 @@
 import { container } from '@mdit/plugin-container'
 import type { PluginSimple } from 'markdown-it'
 
+/**
+ * v-pre container support plugin
+ *
+ * v-pre 容器支持插件
+ */
 export const vPre: PluginSimple = (md) => {
   container(md, {
     name: 'v-pre',
diff --git a/plugins/markdown/plugin-markdown-ext/src/node/markdownExtPlugin.ts b/plugins/markdown/plugin-markdown-ext/src/node/markdownExtPlugin.ts
index 47734e84ea..4ab749a6c2 100644
--- a/plugins/markdown/plugin-markdown-ext/src/node/markdownExtPlugin.ts
+++ b/plugins/markdown/plugin-markdown-ext/src/node/markdownExtPlugin.ts
@@ -11,6 +11,29 @@ import type { MarkdownExtPluginOptions } from './options.js'
 import { prepareClientConfigFile } from './prepreClientConfigFile.js'
 import { PLUGIN_NAME } from './utils.js'
 
+/**
+ * Markdown extensions plugin
+ *
+ * Markdown 扩展插件
+ *
+ * @param options - Plugin options / 插件选项
+ * @returns VuePress plugin / VuePress 插件
+ *
+ * @example
+ * ```ts
+ * import { markdownExtPlugin } from '@vuepress/plugin-markdown-ext'
+ *
+ * export default {
+ *   plugins: [
+ *     markdownExtPlugin({
+ *       gfm: true,
+ *       component: true,
+ *       vPre: true,
+ *     }),
+ *   ],
+ * }
+ * ```
+ */
 export const markdownExtPlugin = ({
   gfm,
   breaks,
diff --git a/plugins/markdown/plugin-markdown-ext/src/node/options.ts b/plugins/markdown/plugin-markdown-ext/src/node/options.ts
index 984369d657..2fe91c739b 100644
--- a/plugins/markdown/plugin-markdown-ext/src/node/options.ts
+++ b/plugins/markdown/plugin-markdown-ext/src/node/options.ts
@@ -2,6 +2,8 @@ import type { MarkdownItTaskListOptions } from '@mdit/plugin-tasklist'
 
 /**
  * Options of markdown-ext plugin
+ *
+ * markdown-ext 插件选项
  */
 export interface MarkdownExtPluginOptions {
   /**