chrome-ext-screen-capture
Capture screen from a chrome extension
Installation
In your manifest.json file, include the following:
"permissions": ["tabs", "<all_urls>"],
"background": {
"scripts": ["background.js"]
}
In your background page, put the following:
require('chrome-ext-screen-capture').backgroundPage()
In your content script, the following will return an img url:
var cesc = require('chrome-ext-screen-capture')
cesc.takeScreenshot(function (canvas) {
var selection = document.getSelection().getRangeAt(0).getBoundingClientRect()
var imgURL = cesc.renderPreview(selection, canvas, {padding: 20}).toDataURL('image/png')
console.log('Check this out', imgURL)
})
Acknowledgments
Much of this code was originally sourced from Louis Li and his post.