ModsFinder

Window Size

by Roundaround

With Window Size, a player sets the windowed game resolution from a slider in the video options, without editing options.txt by hand.

FabricForgeNeoForgeQuiltClient-side onlyMIT LicenseOpen source1.21 – 26.3

What it does

Window Size changes the size of the non-fullscreen game window. The chosen size is saved as the overrideWidth and overrideHeight values in options.txt, so the window keeps it after a restart. A new slider on the video options screen sets the windowed resolution directly.

Installation needs Fabric API on Fabric and Quilt, and the mod is published for Fabric, Forge, NeoForge and Quilt across 17 release versions, 1.21 – 26.3. It is client-side only, so servers do not need it. The code is open source under the MIT License.

Key features

  1. Windowed resolution slider

    A slider in the video options screen sets the size of the windowed game without any file editing.

  2. Automatic options.txt update

    Resizing the window writes the new size to overrideWidth and overrideHeight in options.txt.

  3. Persistent window size

    The chosen windowed size stays in place across game sessions until it is changed again.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.32.0.0+26.3-fabric2.0.0+26.3-forge2.0.0+26.3-neoforge2.0.0+26.3-fabric
26.22.0.0+26.2-fabric2.0.0+26.2-forge2.0.0+26.2-neoforge2.0.0+26.2-fabric
26.1.22.0.0+26.1-fabric2.0.0+26.1-forge2.0.0+26.1-neoforge2.0.0+26.1-fabric
26.1.12.0.0+26.1-fabric2.0.0+26.1-forge2.0.0+26.1-neoforge2.0.0+26.1-fabric
26.12.0.0+26.1-fabric2.0.0+26.1-forge2.0.0+26.1-neoforge2.0.0+26.1-fabric
1.21.x12 of 12 versions with builds
1.21.111.0.0+1.21Not availableNot available1.0.0+1.21
1.21.101.0.0+1.21Not availableNot available1.0.0+1.21
1.21.91.0.0+1.21Not availableNot available1.0.0+1.21
1.21.81.0.0+1.21Not availableNot available1.0.0+1.21
1.21.71.0.0+1.21Not availableNot available1.0.0+1.21
1.21.61.0.0+1.21Not availableNot available1.0.0+1.21
1.21.51.0.0+1.21Not availableNot available1.0.0+1.21
1.21.41.0.0+1.21Not availableNot available1.0.0+1.21
1.21.31.0.0+1.21Not availableNot available1.0.0+1.21
1.21.21.0.0+1.21Not availableNot available1.0.0+1.21
1.21.11.0.0+1.21Not availableNot available1.0.0+1.21
1.211.0.0+1.21Not availableNot available1.0.0+1.21
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

GUI Scaler is client-side only, open source under the GNU Lesser General Public License v3.0 only, and covers 1.20.1 – 26.3 on Fabric, Forge and NeoForge. Instant Borderless is client-side only, released under the MIT License but not open source, and covers 1.21.1 – 1.21.11 on Fabric and NeoForge.

ModLoadersGame versionsEnvironmentUpdated
Window SizeFabric, Forge, NeoForge and Quilt1.21 – 26.3Client-side only2026-09-20
GUI ScalerFabric, Forge and NeoForge1.20.1 – 26.3Client-side only2026-09-21
Instant BorderlessFabric and NeoForge1.21.1 – 1.21.11Client-side only2026-09-15

Questions

Does Window Size need Fabric API?

Yes. Fabric API is a required dependency of Window Size, so it must be installed alongside the mod on Fabric and Quilt.

In the catalog

Window Size is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.

Utility mods36,990Fabric modsMods for 26.38,071

More from Roundaround

All projects
Inventory Management1.18.2 – 26.3Pickup Notifications1.18.2 – 26.3Axolotl Buckets1.18.2 – 26.3Invisible Frames1.18.2 – 26.3Sprint Indicator1.19 – 26.3Villager Converting1.17.1 – 26.3

Similar mods

Mod Menu1.14.4 – 26.3Reese's Sodium Options1.16.5 – 26.3Jade 🔍1.16.4 – 26.3Zoomify (Zoom)1.18 – 26.3FancyMenu1.12 – 26.3Indium1.16.5 – 1.21.1

What the author says

Permanently modify the Minecraft game's (non-fullscreen) window size without having to edit options.txt! Simply resizing the window will automatically update the overrideWidth and overrideHeight properties in your options.txt, plus the video options screen in game will have a new slider for windowed resolution!
Roundaround, on the Modrinth page

Official listing

Owner
Roundaround
Published
2025-05-20
Updated on Modrinth
2026-09-20
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare