Window Size Mod (1.21.7, 1.21.1) – Easy Window Resizing for Minecraft Without File Edits

visibility 5 ❘Author: Roundaround ❘ 12 hours ago ❘
extension Available for: Fabric Quilt
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Window Size Mod (1.21.7, 1.21.1) offers a simple yet effective solution for Minecraft players who want to adjust the game window size without manually editing configuration files. Instead of going through options.txt, this mod introduces an intuitive in-game slider that lets you permanently set the dimensions of your game window with just a few clicks.

Ideal for players with specific screen setups, content creators, or anyone who plays in windowed mode, this tweak saves time and frustration by offering direct control over how Minecraft opens no more resizing every time you launch the game.

Window Size Mod

Features:

  • Permanent Window Size Setting
    Set your preferred window size once and it will apply every time you start the game.
  • In-Game Configuration
    Adjust the window dimensions using an easy-to-use slider within Minecraft’s settings UI.
  • No File Editing Required
    Removes the need to manually edit options.txt to control window size.
  • Non-Fullscreen Only
    Specifically applies to windowed mode, giving players full control without affecting fullscreen behavior.

Screenshots:

Window Size Mod Screenshot 01

Window Size Mod Screenshot 02

Window Size Mod Screenshot 03

Window Size Mod Screenshot 04

Window Size Mod Screenshot 05

Requires:

Fabric API or Quilt Loader

How to install:

How To Download & Install Mods with Minecraft Forge

How To Download & Install Fabric Mods

How To Download & Install The Quilt Loader

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Why use Window Size Mod?

If you regularly play Minecraft in windowed mode or stream the game with a specific resolution layout, manually adjusting the window every launch can be annoying. Window Size Mod eliminates that problem by letting you set your ideal dimensions once and forget about it. It’s especially useful for streamers, modpack developers, and multitaskers who want a consistent window layout every time they boot up Minecraft.

FAQs

Does this affect fullscreen mode?

No. The mod only changes the default size of the windowed (non-fullscreen) mode.

Where can I find the window size slider?

It is typically located within the mod’s settings or under the video settings menu.

Will this overwrite my options.txt settings?

Yes, the mod overrides the manual window size settings stored in options.txt for convenience.

Is this mod client-side only?

Yes. It is purely a client-side quality-of-life feature and does not require server installation.

Can I enter custom values?

Some versions allow typing specific dimensions, while others rely on sliders. Check the mod config options for more control.

Download links

1.21 to 1.21.7