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I have little problem. I need to connect image from the internet in my app, but I encounter error.

Refused to load the image 'http//testdomain/test_img.jpg' because it violates the following Content Security Policy directive: "img-src 'self' data: chrome-extension-resource:".

manifest.json

{
  "name": "TEST",
  "description": "TEST for TEST",
  "version": "0.1",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": [
  "storage",
  "fullscreen",
],
"content_security_policy": "img-src 'self' data: chrome-extension-resource:;",
  "icons": {"128": "icon.png" }
}

index.html

<html><img src="http://testdomain/test_img.jpg"></html>

I have little problem. I need to connect image from the internet in my app, but I encounter error.

Refused to load the image 'http//testdomain/test_img.jpg' because it violates the following Content Security Policy directive: "img-src 'self' data: chrome-extension-resource:".

manifest.json

{
  "name": "TEST",
  "description": "TEST for TEST",
  "version": "0.1",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": [
  "storage",
  "fullscreen",
],
"content_security_policy": "img-src 'self' data: chrome-extension-resource:;",
  "icons": {"128": "icon.png" }
}

index.html

<html><img src="http://testdomain/test_img.jpg"></html>
  • javascript
  • google-chrome
Share Improve this question edited Feb 19, 2016 at 17:20 Mark Pattison 3,0391 gold badge23 silver badges45 bronze badges asked Mar 3, 2014 at 17:03 vovcyanvovcyan 311 silver badge2 bronze badges
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2 Answers 2

Reset to default 6

Setting or removing content_security_policy with different options did not work at all for me, but there is a very good explanation in the chrome dev docs:

var xhr = new XMLHttpRequest();
xhr.open('GET', 'https://supersweetdomainbutnotcspfriendly./image.png', true);
xhr.responseType = 'blob';
xhr.onload = function(e) {
  var img = document.createElement('img');
  img.src = window.URL.createObjectURL(this.response);
  document.body.appendChild(img);
};
xhr.send();

Source: https://developer.chrome./apps/app_external#webview

You just need to load the image with XMLHttpRequest. I did NOT need to add the host to the permissions though. Which is good, because in my case the host is dynamic.

Because you're trying to load an image from an external source, it violates the CSP you have in there:

img-src 'self' data: chrome-extension-resource

Just remove the CSP entirely.

本文标签： javascriptContent Security Policy Chrome App (imgsrc)Stack Overflow

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