Canvas MD Exporter for ChatGPT

Download the currently visible ChatGPT Canvas or document as a local Markdown (.md) file. Local-only. Runs only when you click.

One click → save the ChatGPT Canvas, document, or writing block you are currently looking at as a local Markdown (.md) file. WHAT IT DOES • Detects the currently visible document on the ChatGPT page: an open Canvas (text or code), an assistant writing block, or your own text selection. • Converts it to clean Markdown locally — headings, lists, tables, fenced code blocks with language, blockquotes, links, and LaTeX math are preserved. • Saves it with a safe filename derived from the document title. Existing files are never overwritten. • Copy-to-clipboard and a local diagnose view are also available. PRIVACY BY DESIGN • Runs ONLY when you click the extension (or press Alt+Shift+M). • 100% local processing. No servers, no analytics, no accounts, no ads. • Never reads cookies, tokens, history, or hidden conversations. • No host permissions: the extension cannot see any page until you invoke it, and it refuses to run outside chatgpt.com / chat.openai.com. WHAT IT DOES NOT DO — BY CHOICE No full-conversation export, no bulk backup, no cloud sync, no automation of your ChatGPT account. It does not modify ChatGPT's interface, does not add options to ChatGPT's own menus, and does not call any internal API. A more "convenient" tool would do those things; we deliberately don't. We respect OpenAI's product as it is — this extension only offers a local way to save the document you can already see, for people who write long Markdown documents in Canvas. KNOWN LIMITS It exports what is currently rendered on screen: the open Canvas version, or visible writing blocks. Content scrolled far out of a long conversation, and hidden canvas history versions, are out of scope by design. AN HONEST TIP If you only need occasional convenience, a custom instruction asking ChatGPT to output documents as downloadable .md links covers many cases — no extension required. This tool is for the rest: saving exactly what is already on screen without regenerating it (regeneration can alter wording and costs another message), and preserving math/LaTeX, which ChatGPT's own copy and export paths often mangle. Unofficial extension. Not affiliated with, endorsed, or sponsored by OpenAI. "ChatGPT" is a trademark of OpenAI, used here only to describe compatibility.