![]() proxx.wbn: PROXX is a Minesweeper clone that works offline.is a snapshot of the entire web.dev site, as of 2019 October 15.You could also try out other sample web bundles: The Preact implementation of TodoMVC working offline as a web bundle Enabling Web Bundles in about://flagsĭrag-and-drop the todomvc.wbn file into Chrome if you're on desktop, or tap it in a file management app if you're on Android.Įverything magically works. If you're running version 80 or later, skip the next step.ĭownload Chrome Canary if you're not running Chrome 80 or later. Go to about://version to see what version of Chrome you're running. Note that wbn is still in the early stages of development. You can also try out the experimental Node.js module for bundling, wbn. Visit the GitHub repo to learn more about go/bundle. The go/bundle CLI lets you build a Web Bundle using a HAR file or a custom list of resource URLs. There are other options for bundling and more are coming. gen-bundle -dir build -baseURL -primaryURL -o todomvc.wbnĬongratulations! TodoMVC is now a Web Bundle. Ĭlone the preact-todomvc repository and build the web app to get ready to bundle the resources. go get -u /WICG/webpackage/go/bundle/cmd/. go/bundle is a reference implementation of the Web Bundles specification built in Go. The go/bundle CLI is currently the easiest way to bundle a website. In the meantime, check out Dealing with Common Problems in Unsigned Bundles to learn how to avoid cross-origin issues. Bundling PROXX without signatures doesn't work well due to web worker cross-origin issues. Here's a video that explains this scenario.Ĭurrently Chrome 80 only supports unsigned bundles (that is, Web Bundles without origin signatures). Start playing the game on your own device and try to beat your friend's high score.wbn file in a browser that supports Web Bundles. For example the file could easily be shared peer-to-peer using a file sharing app. But with Web Bundles, here's what you can now do: Before Web Bundles, the story would end there and you would either have to take turns playing the game on your friend's device, or find something else to pass the time. Your friend is playing an interesting web game called PROXX, and tells you that they downloaded the game as a Web Bundle before boarding the plane. You don't like the in-flight entertainment. For example, say you're on an airplane from Tokyo to San Francisco with your friend. One common scenario is the ability to build a self-contained web app that's easy to share and usable without an internet connection. Loads nearly instantly when served locally.Loads in the context of its origin when cryptographically signed by its publisher.Uses HTTP Variants to do content negotiation, which enables internationalization with the Accept-Language header even if the bundle is used offline.Enables executable JavaScript, unlike MHTML.Encapsulates multiple pages, enabling bundling of a complete website into a single file.Web Bundles have multiple unique features: You can read more about this in the Top-level structure section of the spec draft. wbn extension (by convention) which packages HTTP resources into a binary format, and is served with the application/webbundle MIME type. To be precise, a Web Bundle is a CBOR file with a. This article walks you through what a Web Bundle is and how to use one. This is similar to how Signed HTTP Exchanges, a feature for signing a single HTTP resource, are handled. Signatures allow browsers to understand and verify where each resource came from, and treats each as coming from its true origin. HTTP resources in a Web Bundle are indexed by request URLs, and can optionally come with signatures that vouch for the resources. Web Bundles, more formally known as Bundled HTTP Exchanges, are part of the Web Packaging proposal. ![]() It can include one or more HTML files, JavaScript files, images, or stylesheets. # Introducing the Web Bundles APIĪ Web Bundle is a file format for encapsulating one or more HTTP resources in a single file. The Web Bundles API is currently only supported in Chromium-based browsers behind an experimental flag. The Web Bundles API is a bleeding edge proposal that lets you do all of this.
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