YouTube 4 Thumbnails Per Row Fix

Fixes YouTube’s layout to display 4 thumbnails per row, resizing them for a more compact and cleaner browsing experience on the homepage and subscription feed.

当前为 2025-04-22 提交的版本，查看最新版本。

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// ==UserScript==
// @name         YouTube 4 Thumbnails Per Row Fix
// @namespace    https://gf.qytechs.cn/users/1461079
// @version      1.0
// @description  Fixes YouTube’s layout to display 4 thumbnails per row, resizing them for a more compact and cleaner browsing experience on the homepage and subscription feed.
// @author       Michaelsoft
// @match        *://www.youtube.com/*
// @grant        none
// @run-at       document-start
// @license      MIT
// ==/UserScript==

(function() {
  'use strict';

  function applyFixes() {
    const gridRenderer = document.querySelector('ytd-rich-grid-renderer');
    if (gridRenderer) {
      gridRenderer.style.setProperty('--ytd-rich-grid-items-per-row', '4', 'important');
    }

    document.querySelectorAll('ytd-rich-grid-row, #contents.ytd-rich-grid-row').forEach(el => {
      el.style.setProperty('display', 'contents', 'important');
    });

    document.querySelectorAll('ytd-rich-item-renderer').forEach(el => {
      el.style.setProperty('margin-right', 'calc(var(--ytd-rich-grid-item-margin)/2)', 'important');
      el.style.setProperty('margin-left', 'calc(var(--ytd-rich-grid-item-margin)/2)', 'important');
    });

    // Optional: font size fixes
    document.querySelectorAll('#video-title.ytd-rich-grid-media, #video-title.ytd-rich-grid-slim-media').forEach(el => {
      el.style.setProperty('font-size', '1.4rem', 'important');
      el.style.setProperty('line-height', '2rem', 'important');
    });

    document.querySelectorAll('#metadata-line.ytd-video-meta-block').forEach(el => {
      el.style.setProperty('font-size', '1.2rem', 'important');
      el.style.setProperty('line-height', '1.8rem', 'important');
    });
  }

  // Observe for dynamic content (SPA nav, infinite scroll)
  const observer = new MutationObserver(() => {
    applyFixes();
  });

  window.addEventListener('load', () => {
    applyFixes();
    observer.observe(document.body, { childList: true, subtree: true });
  });
})();

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