Borderless Windowed

Enables a borderless windowed fullscreen mode, replacing Minecraft’s default fullscreen behavior.

11.3K Downloads

fabric

Rent Server with this Mod

About this Mod

Borderless Windowed

Borderless Windowed replaces Minecraft’s default fullscreen with a borderless windowed mode.

This allows Minecraft to behave like fullscreen while remaining a window, making it easier to alt-tab, use multiple monitors, and avoid screen flickering or resolution changes.

Features

Borderless windowed fullscreen
Faster and smoother alt-tabbing
No resolution switching
Works like fullscreen without exclusive mode

Compatibility

Fabric mod
Client-side only
Compatible with most mods

Notes

This mod does not change gameplay and only affects how the game window behaves.

Available Versions

Borderless Windowed 1.0.0release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric

January 18, 2026

How to Install Borderless Windowed on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "Borderless Windowed". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Borderless Windowed server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Borderless Windowed compatible with fabric?

Borderless Windowed officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Borderless Windowed – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Borderless Windowed consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.