CB Chat Emote URL Cleaner + Size Cap

Remove dimension tokens from emote IMG URLs and visually cap them to 250x80. No other elements are touched.

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         CB Chat Emote URL Cleaner + Size Cap
// @namespace    aravvn.tools
// @version      1.1.0
// @description  Remove dimension tokens from emote IMG URLs and visually cap them to 250x80. No other elements are touched.
// @author       aravvn
// @license      CC-BY-NC-SA-4.0
// @match        https://chaturbate.com/*
// @match        https://*.chaturbate.com/*
// @icon         https://chaturbate.com/favicon.ico
// @grant        none
// @run-at       document-idle
// @noframes
// ==/UserScript==

(() => {
  "use strict";

  const CHAT_CONTAINER_SELECTOR = '.msg-list-fvm.message-list';
  const TARGET_IMG_SELECTOR     = 'img[data-testid="emoticonImg"]';
  const CLASS_CAP               = 'cb-emote-cap-250x80';

  const ensureStyle = () => {
    if (document.getElementById('cb-emote-cap-style')) return;
    const css = `
      .${CLASS_CAP} {
        max-width: 250px !important;
        max-height: 80px !important;
        width: auto !important;
        height: auto !important;
        object-fit: contain !important;
        display: inline-block !important;
        vertical-align: top !important;
      }
    `;
    const style = document.createElement('style');
    style.id = 'cb-emote-cap-style';
    style.textContent = css;
    document.head.appendChild(style);
  };

  const stripWxH = (rawUrl) => {
    if (!rawUrl) return rawUrl;
    try {
      const u = new URL(rawUrl, location.href);
      let p = u.pathname;

      p = p.replace(/\/\d{2,4}[xX]\d{2,4}\//g, '/');
      p = p.replace(/([/_-])\d{2,4}[xX]\d{2,4}(?=(?:\.[a-z0-9]+$|$))/i, '');
      p = p.replace(/([_-])\d{2,4}[xX]\d{2,4}([_-])/gi, '$2');
      p = p.replace(/--+/g, '-').replace(/__+/g, '_').replace(/^[-_]+|[-_]+$/g, '');

      u.pathname = p;
      return u.href;
    } catch {
      return rawUrl
        .replace(/\/\d{2,4}[xX]\d{2,4}\//g, '/')
        .replace(/([/_-])\d{2,4}[xX]\d{2,4}(?=(?:\.[a-z0-9]+$|$))/i, '')
        .replace(/([_-])\d{2,4}[xX]\d{2,4}([_-])/gi, '$2');
    }
  };

  const capImg = (img) => {
    if (!img.classList.contains(CLASS_CAP)) img.classList.add(CLASS_CAP);
    const s = img.style;
    if (s.maxWidth !== '250px') s.maxWidth = '250px';
    if (s.maxHeight !== '80px') s.maxHeight = '80px';
    if (s.objectFit !== 'contain') s.objectFit = 'contain';
    if (s.height === 'auto' && s.width === 'auto') return;
    if (!s.width)  s.width  = 'auto';
    if (!s.height) s.height = 'auto';
  };

  const cleanImg = (img) => {
    if (!img || !img.matches(TARGET_IMG_SELECTOR)) return;
    const root = img.closest(CHAT_CONTAINER_SELECTOR);
    if (!root) return;

    const src = img.getAttribute('src');
    if (src) {
      const cleaned = stripWxH(src);
      if (cleaned && cleaned !== src) img.setAttribute('src', cleaned);
    }

    capImg(img);
  };

  const sweep = (root) => {
    root.querySelectorAll(TARGET_IMG_SELECTOR).forEach(cleanImg);
  };

  const attachObserver = (chatRoot) => {
    if (!chatRoot || chatRoot.__cbUrlCleanerObs) return;

    sweep(chatRoot);

    const obs = new MutationObserver((muts) => {
      for (const m of muts) {
        if (m.type === 'childList') {
          m.addedNodes.forEach(n => {
            if (!(n instanceof HTMLElement)) return;
            if (n.matches?.(TARGET_IMG_SELECTOR)) cleanImg(n);
            else n.querySelectorAll?.(TARGET_IMG_SELECTOR).forEach(cleanImg);
          });
        } else if (m.type === 'attributes') {
          const t = m.target;
          if (t instanceof HTMLImageElement && t.matches(TARGET_IMG_SELECTOR)) cleanImg(t);
        }
      }
    });

    obs.observe(chatRoot, {
      childList: true,
      subtree: true,
      attributes: true,
      attributeFilter: ['src', 'width', 'height', 'style']
    });

    chatRoot.__cbUrlCleanerObs = obs;
  };

  const init = () => {
    ensureStyle();
    const chatRoot = document.querySelector(CHAT_CONTAINER_SELECTOR);
    if (chatRoot) attachObserver(chatRoot);
    return !!chatRoot;
  };

  if (!init()) {
    const iv = setInterval(() => { if (init()) clearInterval(iv); }, 500);
    setTimeout(() => clearInterval(iv), 15000);
  }
})();