4Chan cdn change

Improve 4chan image load performance, by replacing image links from specific servers to CDN

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name     4Chan cdn change
// @version  1
// @description  Improve 4chan image load performance, by replacing image links from specific servers to CDN
// @author       Dankirk
// @namespace    Dankirk/4cdn
// @grant    none
// @include        https://*.4chan.org/*
// @include        http://*.4chan.org/*
// @include        https://*.4channel.org/*
// @include        http://*.4channel.org/*
// ==/UserScript==

var regex = /^(https?:\/\/)[^\.]+\.4chan\.org\/(.+)$/i;

document.querySelectorAll('a.fileThumb').forEach( el => {
  el.href = el.href.replace(regex,"$1i\.4cdn.org\/$2");
});

document.querySelectorAll('.fileText a').forEach( el => {
  el.href = el.href.replace(regex,"$1i\.4cdn.org\/$2");
});