html-anything

HTML Anything turns Markdown, spreadsheets, PDFs or plain notes into polished single-file web pages by handing them to the coding agent you already use. Pick Claude Code, Codex, Gemini or one of about twenty supported CLIs, pick a template, and it streams back a slide deck, magazine layout, poster or social card. Apache 2.0, from the team behind nexu-io/open-design, and it reuses your logged-in agent session, so there's no API key.

It runs as a local web app in your browser, not a desktop program. Clone it, install with pnpm, and start it with pnpm -F @html-anything/next dev (plain pnpm dev does nothing at the repo root). The 81 templates are agent skill files, and output exports to WeChat, Zhihu, Notion, Bluesky, PNG or straight to your own Vercel account. A command-line version handles batch jobs.

Anyone already paying for an agent subscription who wants presentable HTML without another tool bill should try it. Without an agent CLI installed, it does nothing. The templates are Chinese-first, with CJK font stacks throughout, which suits WeChat publishing better than a US pitch deck.

The catch: to run unattended, it launches your agent with every safety prompt switched off (Claude Code in bypass-permissions mode, Gemini in yolo mode). That's an agent with full access to your machine working from whatever file you drop in, so don't feed it documents you didn't write. Development has also slowed sharply since spring, and there has never been a tagged release.