For over thirty years, we have sent PDFs.

Reports. Decks. Contracts. Whitepapers. Invoices.

Whatever the document was, you exported it to PDF and sent the file. That worked because a PDF is something you can attach to an email, link to, or save to a drive. Everyone has a way to open it.

Now your agent hands you HTML.

Reports as live dashboards. Decks with animations. Memos with embedded charts.

What you get back isn’t a PDF. It is a single HTML file: interactive, responsive, and written in the format your agent already speaks.

HTML beats PDF on almost everything.

HTML is interactive.

A PDF can show you a chart. An HTML page is the chart — drag the sliders.

HTML embeds the live web.

A tweet inside a slide, fetched the moment you open it.

Andrej Karpathy

@karpathy

This works really well btw, at the end of your query ask your LLM to “structure your response as HTML”, then view the generated file in your browser. I’ve also had some success asking the LLM to present its output as slideshows, etc.

More generally, imo audio is the…

May 11, 2026 · X (Twitter)

HTML has never been easier to share.

Skip sending static files. Share a living link instead.

Always up to date. Fully under your control. Easy to revoke.

That is what .bdf is for.

It takes any HTML document and gives it a URL. You share the URL. Whoever opens it sees the page.

Send the link. Done.

You don’t use it. Your agent does.

• Tell your agent: “share this with https://bdf.pub”
• It hands you a link. You send the link.
• Want to change the page? Ask. It updates.
• Want a fresh share link? Ask. The old one stops working.
• You never see a curl command, an API key, or a login screen.

Skip .pdf, ship .bdf.

HTML documents are replacing PDFs. Sharing them has never been easier.

bdf.pub

This deck was published as a .bdf