Share any HTML document as a tracked link. Watch in real time who opened it, how long they stayed, and where they dwelled — down to the section and the second.
The documents that matter increasingly end in .html. Live where you want them live, responsive on every screen, readable by both the people you sent them to and the AI tools they bring with them. PDF served the print era. HTML fits how decks actually get read now: on phones, in inboxes, with an AI tool open in the next tab. HTMLRadar is the tracking layer for the new medium.
“Marc opened it three times. Spent 6m 14s. Read the Ask, Team, and Traction sections. Skipped Market sizing.”
Most analytics tell you someone opened it. HTMLRadar tells you which sentence convinced them — with a three-second dwell floor so scroll-pasts don't count as reads.
HTMLRadar follows the document, not the file type. Sharper for the things you send most.
Per-investor links. See which slide they replayed, which model they downloaded, where the deck lost them.
Open one follow-up with the exact section the buyer re-read — not "just checking in".
Know who walked in cold. Pre-reads as HTML — see who actually read it, who skimmed, who needs the recap.
Single file or full system. We host it for you, version every replacement. Old links keep working.
Each recipient gets a unique link. Email gate, expiry, password, and download lock are all set per share. The whole packet rides under one tracked link: PDFs, cap tables, ZIPs alongside the deck, with each download tagged to the recipient.
Sub-second. Active time, scroll depth, time-per-section, device, browser. A live dashboard, not an email digest.
Five gates per link. Flip any of them off the moment you change your mind.
Email gate, password, or both — recipient verifies before the doc renders.
Block saving the page. Cmd+S, right-click save — nothing reaches their disk.
Set a date. The link starts showing an Expired notice after it. Extend any time.
Restrict by domain, exact email, or both. Everyone else gets blocked.
One toggle kills a link instantly. Past read history stays in the dashboard.
Every share is its own gated channel. The dashboard updates the moment a recipient opens the link.
The tracker, the proxy worker, the schema, the web app — all of it lives on GitHub. The hosted version at htmlradar.com is for people who'd rather not run their own Cloudflare and Supabase. Both options run the same code.
github.com/htmlradar/htmlradarAn email lands the moment a real read happens. Free for 10 documents — no card needed.