Twitter / X.com Max-Width Modifier

Image max width on timeline is changed to be larger, so you don't have the stupid gap on the right of 90% of pictures on Twitter/X

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         Twitter / X.com Max-Width Modifier
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Image max width on timeline is changed to be larger, so you don't have the stupid gap on the right of 90% of pictures on Twitter/X 
// @author       @okitafan
// @match        https://twitter.com/*
// @match        https://x.com/*
// @grant        none
// @run-at       document-start
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    // Function to replace max-width values
    function updateMaxWidths() {
        // Select all elements with style attribute containing max-width: 300px
        const elements = document.querySelectorAll('[style*="max-width: 300px"]');

        // Loop through elements and update their style
        elements.forEach(element => {
            const currentStyle = element.getAttribute('style');
            if (currentStyle && currentStyle.includes('max-width: 300px')) {
                const newStyle = currentStyle.replace('max-width: 300px', 'max-width: 450px');
                element.setAttribute('style', newStyle);
            }
        });
    }

    // Create an observer to watch for DOM changes (for infinite scrolling)
    const observer = new MutationObserver(function(mutations) {
        updateMaxWidths();
    });

    // Start observing when the DOM is ready
    function startObserving() {
        const targetNode = document.body;
        const config = { childList: true, subtree: true };
        observer.observe(targetNode, config);

        // Run initial update
        updateMaxWidths();
    }

    // Run when DOM is fully loaded
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', startObserving);
    } else {
        startObserving();
    }
})();