Paste a Substack post URL and get a shareable PDF, Markdown, or HTML file with text and images, for when an LLM can't fetch the page.
AI agents / scripts: fetch /md/<substack post url> (e.g. /md/https://example.substack.com/p/some-post) to get the post as plain Markdown, no JavaScript needed. JSON is at /api/post?url=…. Details: /llms.txt.
Works with *.substack.com, custom-domain Substacks, and substack.com/@user/p-123 links. Paywalled posts only include the free preview.