Why this exists

I check out a lot of mathematical blogs. Some I read end-to-end, others I only want the gist of. Either way, I like discussing them with an LLM, which means pasting the whole article into the chat first. Every "URL to Markdown" tool I tried was either paywalled, broken on real pages, or choked on math and images. So I built this. It turned out to work on almost any site, with images mirrored locally so the output is self-contained.

What it does

• Paste a URL, get a clean Markdown file back.
• Images are downloaded and referenced locally inside the zip, so the Markdown renders offline.
• LaTeX and KaTeX math is preserved; \label{} is rewritten so KaTeX can render it.
• No signup, no ads, no API key.
• No logs kept. Results auto-delete after 10 minutes.

Good for

• Feeding articles to ChatGPT, Claude, or Gemini for summarization or Q&A.
• Converting HTML docs to Markdown for notes apps.
• Offline reading of long-form blog posts and research papers.
• Archiving writing you want to keep around in a portable, plain-text format.