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@stylewx/preview

v0.5.0

Published

stylewx preview: render styled HTML to a PNG screenshot via Playwright (headless Chromium). iPhone-like viewport (390px) for WeChat previews.

Vulnerabilities

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Links

Git

Maintainers

wjunherewjunhere

Keywords

wechatpreviewscreenshotplaywright

Readme

@stylewx/preview

用 Chromium 把渲染结果截图，用于发布前的视觉检查。Node-only（依赖 Playwright）。

安装

npm i @stylewx/preview
npx playwright install chromium

用法

import { renderIphonePreview, renderHtmlToPng, closePreviewBrowser } from '@stylewx/preview'

// 模拟 iPhone 视口（默认 390×844，devicePixelRatio 2）整页截图
const { png, viewport } = await renderIphonePreview(html)
writeFileSync('preview.png', png)

// 自定义视口
const shot = await renderHtmlToPng(html, { width: 1440, height: 900, fullPage: false })

// 浏览器实例是惰性启动 + 复用的；进程常驻时可显式关闭
await closePreviewBrowser()

说明

启动 Chromium 有固定开销，而编辑器每次键入都截图会很贵， 所以 @stylewx/service 的 renderPreview 默认跳过截图，只在需要出图时打开。

属于 stylewx —— 把 Markdown 排成微信公众号文章的工具链。MIT License.