
Borderless Fullscreen
Makes Minecraft's fullscreen mode more configurable
Screenshots

About this Mod
Info
This mod changes Minecraft's fullscreen mode and makes it more customizable.
By default, it makes the game not minimize on lost focus, and allows other windows on top of the game.
Features
New: Capture the mouse cursor inside the game window to prevent accidentally clicking something on a different monitor. (Not available in 1.20.1 due to old GLFW version)
Switch between exclusive fullscreen and borderless fullscreen mode without having to restart the game
Prevent the game from automatically minimizing when tabbing out
Prevent the game from starting in fullscreen mode
Open the configuration screen by pressing CTRL and F11 (or what your fullscreen key is set to), or through Mod Menu
Troubleshooting
On Windows 10 and 11, Fullscreen Optimizations are enabled by default. Fullscreen Optimizations make the game run better, but they prevent anything from being on top of the game while the game is focused. If you want to, for example, have a picture-in-picture video on top of the game, or use the discord overlay, you have to disable Fullscreen Optimizations.
If you are on Linux, and the taskbar is above the game, disable the Borderless Fullscreen option.
On some Linux distributions you cannot have anything in front of the game, because some window systems don't support regular always-on-top windows. In that case, you have to create a custom window rule to put something in front of the game. Here is an example for firefox picture-in-picture videos
Screenshots

The config menu as of version 2.3.0

Choose which monitor and resolution the game should use when running in fullscreen
Available Versions
How to Install Borderless Fullscreen on Your Client
Install the Mod Loader Locally
Install fabric for your local Minecraft version.
Download the Matching File
Choose the Borderless Fullscreen file for fabric and Minecraft 26.2.
Install Mod
Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.
Compatibility
Mod Loaders
Minecraft Versions
26.2, 26.1.2, 26.1.1 (+14 more)
Server-side
β UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Does Borderless Fullscreen need to be installed on the Minecraft server?
No. Modrinth marks Borderless Fullscreen as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.
Which version and loader does Borderless Fullscreen require?
Use a file for fabric and your exact Minecraft version. Supported versions include 26.2, 26.1.2, 26.1.1. Files for different loaders are not interchangeable.
Borderless Fullscreen is not working β what should I check?
First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.
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Minecraft Server for Your Group
Borderless Fullscreen stays on your client. Host a compatible world for your group.