HTMLRadar · Blog
Notes from the build.
Recipient-side audits of the tools we compete with, the 8 KB tracker explained, and what the reading data on real sends actually came back as.
2026-09-04 · 16 min
What seven deck-sharing tools actually load in your recipient's browser
A recipient-side test of seven deck-sharing tools: every network request, cookie and script that loads when someone opens a shared link. DocSend, Papermark, Peony, Stacktree, Tiiny.host, HummingDeck and HTMLRadar.
2026-08-31 · 8 min
Share an HTML page from Claude Code, then ask who read it
Add the HTMLRadar MCP server to Claude Code in one line, publish the HTML your agent wrote as a tracked link, then ask which sections the reader stayed on.
2026-08-30 · 4 min
Decks moved to HTML. I built the read tracking for it.
Decks and proposals are HTML now, so I built the read tracking: time per section, active reading time, scroll depth. No session replay. Open source, AGPL-3.0.
2026-05-14 · 5 min
How I built HTMLRadar
How HTMLRadar is built: a Next.js app, two Cloudflare Workers, an 8 KB browser tracker, and a Supabase schema. What each part owns and why.