Web app manifests 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Web app manifests are part of a collection of web technologies called progressive web apps (PWAs), which are websites that can be installed to a device’s homescreen without an app store. Unlike regular web apps with simple homescreen links or bookmarks, PWAs can be downloaded in advance and can work offline, as well as use regular Web APIs.

The web app manifest provides information about a web application in a JSON text file, necessary for the web app to be downloaded and be presented to the user similarly to a native app (e.g., be installed on the homescreen of a device, providing users with quicker access and a richer experience). PWA manifests include its name, author, icon(s), version, description, and list of all the necessary resources (among other things).

Can PWA manifest contain comments?
It is a JSON-formatted file, with one exception: it is allowed to contain "//"-style comments.

Members

Web manifests can contain the following keys. Click on each one to link through to more information about it:

Example manifest

{
  "name": "HackerWeb",
  "short_name": "HackerWeb",
  "start_url": ".",
  "display": "standalone",
  "background_color": "#fff",
  "description": "A readable Hacker News app.",
  "icons": [{
    "src": "images/touch/homescreen48.png",
    "sizes": "48x48",
    "type": "image/png"
  }, {
    "src": "images/touch/homescreen72.png",
    "sizes": "72x72",
    "type": "image/png"
  }, {
    "src": "images/touch/homescreen96.png",
    "sizes": "96x96",
    "type": "image/png"
  }, {
    "src": "images/touch/homescreen144.png",
    "sizes": "144x144",
    "type": "image/png"
  }, {
    "src": "images/touch/homescreen168.png",
    "sizes": "168x168",
    "type": "image/png"
  }, {
    "src": "images/touch/homescreen192.png",
    "sizes": "192x192",
    "type": "image/png"
  }],
  "related_applications": [{
    "platform": "play",
    "url": "https://play.google.com/store/apps/details?id=cheeaun.hackerweb"
  }]
}

Deploying a manifest

Web app manifests are deployed in your HTML pages using a <link> element in the <head> of a document:

<link rel="manifest" href="manifest.json">

Note: The .webmanifest extension is specified in the Media type registration section of the specification (the response of the manifest file should return Content-Type: application/manifest+json). Browsers generally support manifests with other appropriate extensions like .json (Content-Type: application/json).

Note: If the manifest requires credentials to fetch - the crossorigin attribute must be set to use-credentials, even if the manifest file is in the same origin as the current page.

Splash screens

In Chrome 47 and later, a splash screen is displayed for sites launched from a homescreen. This splashscreen is auto-generated from properties in the web app manifest, specifically:

name
background_color
The icon in the icons array that is closest to 128dpi for the device.

Specifications

Specification	Status	Comment
Web App Manifest	Working Draft	Initial definition.

Browser compatibility

BCD tables only load in the browser

Web app manifests 编辑

Experimental

Members

Example manifest

Deploying a manifest

Splash screens

Specifications

Browser compatibility

See also

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友情链接

Web app manifests 编辑

Experimental

Members

Example manifest

Deploying a manifest

Splash screens

Specifications

Browser compatibility

See also

如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

词条统计

友情链接

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。