About

HTML Heaven is a community-curated showcase of small, self-contained HTML5 apps — bundled single-file uploads and apps hosted on contributors' own domains. The site code is open-source under MIT; the catalog is moderated.

Bundled apps run as a single HTML file loaded in a sandboxed iframe. Your input stays in your browser for those; nothing is sent to any server except when you choose to like, favorite, or comment.

Contributing

You can submit an app through the site. It creates a PR on the GitHub repo. Every submission is reviewed before going live.

How it works

The catalog of bundled apps lives as files in a GitHub repository, so the content is inspectable and forkable. Social data — likes, favorites, comments, profiles — is stored in a Cloudflare D1 database. The whole stack runs on Cloudflare free tiers.

Security

Bundled apps run in sandboxed iframes with restricted permissions and an HTTP-level CSP sandbox — even when opened in a new tab they can't read cookies or make authenticated requests back to the main site. Externally-hosted apps open in a new tab on their own domain; we don't iframe or proxy them.