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Twitter Original Image Link

Simple script that replace an image link with an original image URL if you click links on Tweet for navigating the image on new tab or copying the URL.

// ==UserScript==
// @name        Twitter Original Image Link
// @name:ja     Twitter 原寸画像リンク
// @description Simple script that replace an image link with an original image URL if you click links on Tweet for navigating the image on new tab or copying the URL.
// @description:ja ツイート上の画像をクリックしたとき (新しいタブで開く・URLのコピー) に、画像のリンクを原寸画像のURLに置換する軽量スクリプトです。
// @namespace   https://greasyfork.org/users/137
// @version     2.0.1
// @match       https://twitter.com/*
// @exclude     https://twitter.com/settings*
// @exclude     https://twitter.com/tos*
// @exclude     https://twitter.com/privacy*
// @exclude     https://twitter.com/jobs*
// @exclude     https://twitter.com/account/*
// @exclude     https://twitter.com/intent/*
// @exclude     https://twitter.com/i/cards/*
// @match       https://tweetdeck.twitter.com/*
// @license     MPL-2.0
// @contributionURL https://www.amazon.co.jp/registry/wishlist/E7PJ5C3K7AM2
// @compatible  Edge
// @compatible  Firefox Firefoxを推奨 / Firefox is recommended
// @compatible  Opera
// @compatible  Chrome
// @grant       dummy
// @run-at      document-start
// @icon        https://abs.twimg.com/favicons/twitter.ico
// @author      100の人
// @homepageURL https://greasyfork.org/users/137
// ==/UserScript==

'use strict';

const tweetDeck = location.origin === 'https://tweetdeck.twitter.com';

function replaceImageLink(event)
{
	/** @type {HTMLElement} */
	const target = event.target;

	const localName = target.localName;
	if (tweetDeck ? localName !== 'a' || event.target.rel !== 'mediaPreview' : localName !== 'img') {
		return;
	}

	/** @type {HTMLAnchorElement} */
	const anchor = tweetDeck
		? target
		: event.target.closest('[href$="/photo/1"], [href$="/photo/2"], [href$="/photo/3"], [href$="/photo/4"]');
	if (!tweetDeck && (!anchor || !anchor.matches('article *'))) {
		return;
	}

	const url = new URL(tweetDeck ? /https:\/\/[^"]+/.exec(target.style.backgroundImage)[0] : event.target.src);
	if (tweetDeck) {
		const result = /\.([a-z]{3})$/.exec(url.pathname);
		if (result) {
			url.searchParams.set('format', result[1]);
		}
	}
	url.searchParams.set('name', 'orig');
	anchor.href = url;
}

addEventListener('click', replaceImageLink, true);
addEventListener('auxclick', replaceImageLink, true);