Parse HTML to get icon information.
npm install --save parse-favicon
# or
yarn add parse-faviconimport { parseFavicon } from 'parse-favicon'
const pageURL = 'https://github.com'
parseFavicon(pageURL, fetchText, fetchBuffer)
.subscribe(icon => console.log(icon))
function fetchText(url: string): Promise<string> {
return fetch(url)
.then(res => res.text())
}
function fetchBuffer(url: string): Promise<ArrayBuffer> {
return fetch(url)
.then(res => res.arrayBuffer())
}type TextFetcher = (url: string) => Awaitable<string> // string | PromiseLike<string>
type BufferFetcher = (url: string) => Awaitable<ArrayBuffer> // ArrayBuffer | PromiseLike<ArrayBuffer>
interface IIcon {
url: string
reference: string
type: null | string
size: null | 'any' | ISize | ISize[]
}
interface ISize {
width: number
height: number
}
function parseFavicon(
pageURL: string
, textFetcher: TextFetcher
, bufferFetcher?: BufferFetcher
): Observable<IIcon>parseFavicon accepts textFetcher and bufferFetcher for further fetching requests when parsing icons, bufferFetcher is optional.
If you need actual icon sizes and type, should provide bufferFetcher.
References related to textFetcher:
<meta name="msapplication-config" content="path/to/ieconfig.xml"><link rel="manifest" href="path/to/manifest.webmanifest">
References related to bufferFetcher:
/favicon.ico/apple-touch-icon-57x57-precomposed.png/apple-touch-icon-57x57.png/apple-touch-icon-72x72-precomposed.png/apple-touch-icon-72x72.png/apple-touch-icon-114x114-precomposed.png/apple-touch-icon-114x114.png/apple-touch-icon-120x120-precomposed.png/apple-touch-icon-120x120.png/apple-touch-icon-144x144-precomposed.png/apple-touch-icon-144x144.png/apple-touch-icon-152x152-precomposed.png/apple-touch-icon-152x152.png/apple-touch-icon-180x180-precomposed.png/apple-touch-icon-180x180.png/apple-touch-icon-precomposed.png/apple-touch-icon.png
<link rel="icon" href="path/to/icon.png"><link rel="shortcut icon" href="path/to/icon.ico"><link rel="apple-touch-icon" href="path/to/icon.png"><link rel="apple-touch-icon-precomposed" href="path/to/icon.png"><link rel="manifest" href="path/to/manifest.webmanifest"><link rel="fluid-icon" href="path/to/icon.png"><link rel="mask-icon" href="path/to/icon.svg"><meta name="msapplication-TileImage" content="path/to/icon.png"><meta name="msapplication-config" content="path/to/ieconfig.xml"><meta name="msapplication-square70x70logo" content="path/to/icon.png"><meta name="msapplication-square150x150logo" content="path/to/icon.png"><meta name="msapplication-square310x310logo" content="path/to/icon.png"><meta name="msapplication-wide310x150logo" content="path/to/icon.png">/favicon.ico/apple-touch-icon-57x57-precomposed.png/apple-touch-icon-57x57.png/apple-touch-icon-72x72-precomposed.png/apple-touch-icon-72x72.png/apple-touch-icon-114x114-precomposed.png/apple-touch-icon-114x114.png/apple-touch-icon-120x120-precomposed.png/apple-touch-icon-120x120.png/apple-touch-icon-144x144-precomposed.png/apple-touch-icon-144x144.png/apple-touch-icon-152x152-precomposed.png/apple-touch-icon-152x152.png/apple-touch-icon-180x180-precomposed.png/apple-touch-icon-180x180.png/apple-touch-icon-precomposed.png/apple-touch-icon.png