ravico50/youtube-prism-enhancer

YouTube Premium Ultimate is a browser extension that bundles a large set of YouTube tweaks into one package: ad blocking, video downloading, playback controls, a dark mode, and comment filtering. The README describes it as cross browser, distributed as a crx file for Chrome, an xpi for Firefox, or a zip for manual installation, along with a PDF manual and sample configuration files. Its ad blocker is described as predictive, skipping ad segments before they load rather than just hiding elements on the page. Playback controls include speed adjustment from 0.25x to 16x, a volume booster up to 500 percent, frame by frame navigation, a resizable picture in picture window, and a dark mode with three lighting presets. The built in downloader can save videos up to 8K in MP4, WebM, or MKV, or extract audio only as MP3, FLAC, or AAC, and can batch download whole playlists or channels with automatic folder naming. A playlist manager offers drag and drop reordering, duplicate detection, merging playlists together, and JSON or CSV export and import. A recommendation filter lets a user narrow suggestions by content type, video length, or approved channels, and a subscription manager groups channels into categories with a scheduled digest of new uploads. Over 180 keyboard shortcuts are customizable through a visual shortcut editor, and advanced users can inject custom CSS to restyle the page. Two AI integrations are described. Claude is used to summarize each video in one paragraph, pull out key discussion points from comments, and flag spam, hate speech, or misinformation with a sentiment trend over time. OpenAI is used by creators to generate video descriptions, translate titles and descriptions into more than 50 languages, create chapter markers from a transcript, and suggest SEO tags. The interface itself is localized into 22 languages and adapts its layout across desktop, tablet, mobile, and TV sized screens. The README lists the project under the MIT License and states it is version 2026.1, aimed at anyone who wants a more customized and controllable YouTube viewing experience than the stock site offers.