wtf is larksnap?

LarkSnap is a Chrome browser extension that helps people export documents from Feishu and Lark, which are workplace collaboration tools popular in China (Feishu is the Chinese name, Lark the international one). It lets a user turn a document into Markdown, PDF, or HTML, download attachments in bulk, cache pages offline, and even write Markdown content back into a document. It works using the browser's own logged-in session and Feishu's internal web interfaces, so there is no need to register an app or request API permissions through an official developer platform. It also works with company-hosted, privately deployed versions of Feishu, and can still export documents even when an organization has turned off the official export feature, though the README stresses this fallback path should only be used with proper authorization. Beyond Feishu documents, the extension works as a general web clipping tool. On any webpage, it can convert the full page or a selection into Markdown, take a full-page screenshot, generate an AI summary, and remove restrictions that block copying or right-clicking. It can also download videos from Bilibili, YouTube, Douyin, and TikTok by handing the page link to a small local helper program that uses the yt-dlp and ffmpeg command-line tools already installed on the user's machine. A companion piece lets the extension connect to Claude Code, an AI coding assistant, through an installable skill. Once set up, a user can paste a Feishu document link into Claude Code and have it download directly to a local folder, or paste an arXiv paper link to fetch the PDF, HTML, and Markdown versions of that paper without needing the browser extension at all for that particular feature. The project states that all document content, cookies, and login sessions stay on the user's own computer, with no backend server and no content sent to third parties. It does collect anonymous, disableable usage statistics such as feature counts and version numbers, but nothing identifying. It requests only the browser permissions it needs at the time, rather than broad access upfront. The extension is released under the Apache License 2.0, and its author credits several existing open-source Feishu export projects as design references.