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X Theme Engine gives you complete control over how X looks, feels, and behaves. Choose a ready-made theme or build a detailed custom palette, reduce distracting interface elements, and manage how media appears in your timeline.

Themes and Colors

Create a fully custom color palette or choose from 20 pre-made themes
Customize backgrounds, surfaces, cards, text, borders, accents, buttons, tabs, engagement controls, usernames, links, hashtags, and mentions.
Assign different themes to Home, Explore, Notifications, Messages, Grok, Bookmarks, profiles, Settings, and Creator Studio.


Typography and Layout

Choose from 26 font options.
Adjust text size and line height.
Change feed width and interface corner styling.
Create independently rounded post cards.
Select Circle, Soft, Squircle, Square, Hexagon, or Diamond avatar shapes.
Customize scrollbar width, thumb color, and track color.
Enable reduced-motion styling.


Media Controls

Use Media Gate to obscure timeline images and videos until you choose to reveal them.
Reveal individual posts with one click or reveal all media for the current session.
Optionally preview gated media on hover.
Control the strength of the gate blur.
Automatically pause and mute gated video and audio.
Adjust media brightness, grayscale, opacity, and saturation.


Focus Controls

Remove individual parts of X without hiding the content you still want:
Right sidebar
Trends and Today’s News
Who to follow
Premium and Verified Organizations links
Grok controls
Promoted posts and sponsored modules
Post composer and Post buttons
View counts and analytics actions
Reply, repost, and like counts


Profiles and Sharing

Export and import your complete settings profile.
Generate compact theme codes for sharing custom color palettes.
Import shared theme codes without using an external service.


Privacy

X Theme Engine contains no analytics, tracking, advertising, or external network requests. It only requests Firefox’s storage permission to save your preferences through extension storage.