WindowedFullscreen
by Ukognoz
WindowedFullscreen removes the window border so Minecraft fills the whole display while staying a windowed client, letting players tab out without a mode switch.
What it does
The mod targets the common case where a player wants a clean look without giving up the window. It removes the window border and sizes the game to cover the entire display. The game still runs as a windowed application, so switching to other programs does not trigger the window re-rendering that exclusive fullscreen causes.
It works through the GLFW interface that Minecraft already uses, instead of replacing windowing code. The author states that this direct approach keeps it stable across newer Minecraft versions. It requires Fabric and is published for 1.21 – 1.21.11, with 1.0.0 for 1.21.11 as the latest file. It is client-side only, so servers do not need it, and it is not open source; it is released under All rights reserved.
Key features
Borderless window
The window border is removed and the game covers the full display while remaining a window.
Fast switching to other programs
Tabbing out does not re-render the window the way an exclusive fullscreen mode does.
No setup screens
The mod installs and runs without menus or extra configuration to adjust.
GLFW-based approach
Borderless behavior is applied through GLFW, the windowing library Minecraft already uses.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Multitasking during play
Players who keep chat, a browser or a stream open beside the game can alt-tab without the screen flickering or resizing.
Clean presentation
Players who record or screenshot the game can show the full display without window borders in the frame.
Who it’s for: Players on Fabric who want a borderless windowed display on the 1.21 line and prefer a single file with no settings.
How it compares
Borderless Windowed is client-side only, published on Fabric for the same span, and released under All rights reserved, so it shares this mod's license. Borderless Fullscreen is client-side only on Fabric for 1.20.1 – 26.3 and is open source under the GNU General Public License v3.0 only, covering a wider version span. Borderless Windowed Vulkan is client-side only on Fabric for 1.21 – 26.3 and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| WindowedFullscreen | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-05-26 |
| Borderless Windowed | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-01-18 |
| Borderless Fullscreen | Fabric | 1.20.1 – 26.3 | Client-side only | 2026-10-01 |
| Borderless Windowed Vulkan | Fabric | 1.21 – 26.3 | Client-side only | 2026-09-17 |
Questions
Does WindowedFullscreen need Fabric API?
Does WindowedFullscreen have to be installed on a server?
Which Minecraft versions does WindowedFullscreen support?
In the catalog
WindowedFullscreen is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Ukognoz
Similar mods
What the author says
Finally, true borderless fullscreen for Minecraft! Are you tired of the long loading times when switching between fullscreen and windowed mode? Or do you use multiple monitors and want to switch seamlessly between Minecraft and your browser or Discord without the game minimizing?
Official listing
- Modrinth page
- modrinth.com/mod/windowedfullscreen
- Owner
- Ukognoz
- Published
- 2026-05-26
- Updated on Modrinth
- 2026-05-26
- Facts verified
- 2026-10-15