Two powerful engines. One beautifully simple way to browse.
Pick your engine. Find your direction.
The rest of the
web is waiting.
Different strengths. Same destination.
Your favorite corners of the web, saved on this device.
Your last 100 browsing launches. Only stored in this browser.
A few small choices for a better way through.
Cloudflare serves the interface. Your Miget server makes the connection. Use only a backend you trust.
Prism is a web proxy, not a VPN or an anonymity service. Website compatibility varies. Use an instance you trust, and avoid entering sensitive account information.
Built on open source. Made for your own server.
Scramjet 1.1.0 and Ultraviolet 3.2.10 rewrite web content using a service worker. Choose Scramjet for your first try; switch to Ultraviolet if a site doesn't behave as expected. Ultraviolet is a legacy option and is no longer actively maintained upstream.
Epoxy and libcurl carry requests through the Node.js Wisp server at the endpoint configured in Settings. In a split deployment, Cloudflare Pages hosts this frontend and Miget hosts Wisp. Both work with either engine via bare-mux. Transport choices apply across Prism tabs on this origin. Close other sessions before switching.
Open Prism over HTTPS, or localhost during development. Service workers, SharedWorkers, WebAssembly, and cross-origin isolation are required. If an embedded preview restricts these features, open the app directly in its own browser tab.
Open Prism in a new tabBookmarks and optional history live in this browser's local storage. Destination websites and your server operator can still observe connection information. This app is not a security sandbox. Keep it on a dedicated origin, add access control before public deployment, and browse responsibly.
If a page fails, try the other engine or transport. CAPTCHAs, DRM, sign-ins, anti-bot systems, and browser restrictions can prevent sites from working. A pinned version does not guarantee a bug-free experience.