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Copy the alt text in tweets into the title text, so that you can see it on hover.
// ==UserScript==
// @name Twitter Alt-Text to Title-Text
// @description Copy the alt attribute of twitter images into the title attribute, so that I can see the alt text on hover.
// @version 1
// @grant none
// @include*
// ==/UserScript==
const SELECTORS = `.tweet .AdaptiveMedia-photoContainer img
, .Gallery-media img
, img:not([src*="/profile_images/"])`;
function copyAltToTitle(elt) {
if (elt.alt && !elt.title && elt.alt != 'Image') {
console.log(`Copying alt text to title text ${elt.alt}`);
elt.title = elt.alt;
function copyAll() {
setInterval(copyAll, 1000);
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