How is HTMLRadar different from Papermark?

HTMLRadar is deliberately narrow: it tracks HTML files and public URLs with section-level dwell data. Papermark is a broader document-sharing and data-room product. Choose the product that matches the format and workflow you already use.

Is HTMLRadar open source?

Yes. HTMLRadar is AGPL-3.0 end to end: the tracker, proxy worker, schema, and web app are on GitHub. You can run it in your own Cloudflare and Supabase accounts.

Which should I choose?

Choose HTMLRadar when you already send HTML decks, briefs, or proposals and want to know which sections people read. Choose Papermark when you need broader document sharing or data rooms.

HTMLRadar · Compare

The Papermark alternative for HTML decks.

Updated August 2026

HTMLRadar is a Papermark alternative for people whose documents are HTML rather than office files. It keeps the deck as a live page, gives each recipient their own link, and reports which headings or slides were read. Both are open source; HTMLRadar is AGPL-3.0, free for two tracked links, then $15 a month.

Papermark is a broader document-sharing and data-room product. HTMLRadar is narrower: upload an HTML file or paste a URL, send a tracked link, and see which sections the recipient actually read.

If the document you send is already a web page, do not convert it just to track it. HTMLRadar keeps the original format and tracks the headings and slides inside it.

Choose by workflow

Workflow	HTMLRadar	Papermark
What you send	HTML files or public URLs	Broader document sharing and data rooms
Reading detail	Heading and slide dwell	Product-specific document analytics
Self-hosting	AGPL source in your own Cloudflare and Supabase accounts	See Papermark's current self-hosting terms
Best fit	Web decks, briefs, and proposals	Multi-document sharing and data rooms

When to use each product

Use HTMLRadar

You already send HTML. You want to keep it as HTML, create per-recipient links, and see which headings or slides held attention.

Use Papermark

You need a broader document-sharing product, especially for multi-document data rooms.

Common questions

How is HTMLRadar different from Papermark?: HTMLRadar is deliberately narrow: it tracks HTML files and public URLs with section-level dwell data. Papermark is a broader document-sharing and data-room product. Choose the product that matches the format and workflow you already use.
Is HTMLRadar open source?: Yes. HTMLRadar is AGPL-3.0 end to end: the tracker, proxy worker, schema, and web app are on GitHub. You can run it in your own Cloudflare and Supabase accounts.
Which should I choose?: Choose HTMLRadar when you already send HTML decks, briefs, or proposals and want to know which sections people read. Choose Papermark when you need broader document sharing or data rooms.

Track an HTML deck free

First 2 tracked links free. No credit card. AGPLv3 source on GitHub.