Minimal Ultrawide Theme for Twitter / X: Full-Screen Multi-Column Feed

X (Twitter) gives your timeline one thin column and leaves the rest of a wide monitor empty. On a 3440 x 1440 screen, about 64% of it shows nothing. X Ultrawide puts your whole screen to work. WHAT YOU GET Horizontal masonry: posts pack into full-height columns that scroll sideways, with a scrollbar along the bottom. Vertical masonry: prefer scrolling down? Switch to a classic multi-column masonry in one click. Cleaner layout: an icon-only menu, search in the top bar, and the composer and trends as the first cards. Ad blocker: hides promoted and boosted posts, which you can turn off any time. Adjustable card width: from 320 to 900 px. Light and dark themes: it follows your X theme. Remembers your place: open a post and come back to where you were. ONLY WHERE YOU WANT IT It changes the Home timeline and nothing else. Profiles, posts, search and settings look exactly as X renders them. PRIVATE No accounts, no tracking, no analytics, and nothing leaves your browser. Your settings sync through your own Chrome account. FREE AND OPEN SOURCE The full source code is on GitHub, under the MIT license: https://github.com/thehasnaink/x-ultrawide Found a bug or have an idea? Open an issue: https://github.com/thehasnaink/x-ultrawide/issues X changes its site often. If the layout ever breaks after an X update, please report it and it will be fixed. X Ultrawide is an independent project and is not affiliated with or endorsed by X Corp.