Optiscale
by darimus
Optiscale lets players set the GUI scale to fractional values between the vanilla steps, through a wider slider in the Video Settings screen.
What it does
The mod changes the Video Settings GUI Scale slider so it accepts a wider range of values than the vanilla options of 1, 2 and 3. Instead of choosing an integer, the player moves the slider to a value such as 1.7x, which appears as a percentage between 150% and 450%. Vanilla scaling options keep their own percentages, so the slider replaces the old choices rather than adding a separate setting.
The mod works with vanilla and with OptiFine, and it keeps working alongside custom video screen UIs such as Iris and Oculus. Its key bindings are reached through the F7 key, which opens the Key Bindings menu. Optiscale is published for Forge and NeoForge across 10 release versions, 1.18.1 – 1.21.1, and the environment is client-side only, so the server does not need it. The code is not open source, and the mod is released under All rights reserved.
Key features
Fractional GUI scale
The slider accepts fine steps, so the interface can be sized to a value such as 1.7x rather than only whole numbers.
Wider scaling range
The slider covers a wider range than the vanilla scaling options, from 150% to 450%.
Works with OptiFine
The GUI scale adjustment applies both to vanilla and to OptiFine video settings.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x1 of 1 version with builds
1.20.x4 of 4 versions with builds
1.19.x3 of 3 versions with builds
1.18.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Matching a display size
Players on monitors with unusual resolutions can pick a scale between the fixed vanilla steps to make menus fit comfortably.
Who it’s for: Players who find the three vanilla GUI scale steps too coarse, and who run Forge or NeoForge on the 1.18.1 – 1.21.1 range with a client install.
How it compares
TipTheScales is client-side only and open source under the GNU Lesser General Public License v2.1 only, with builds for Fabric, Forge and NeoForge across the 1.7.10 – 26.3 range. GUI Scale Keys is also client-side only and open source, under the GNU General Public License v3.0 only, and covers Fabric, Forge and NeoForge across the 1.20.1 – 26.3 range. Right Proper GUI Scale targets Forge alone on 1.7.10 and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Optiscale | Forge and NeoForge | 1.18.1 – 1.21.1 | Client-side only | 2026-06-27 |
| TipTheScales | Fabric, Forge and NeoForge | 1.7.10 – 26.3 | Client-side only | 2026-09-18 |
| GUI Scale Keys | Fabric, Forge and NeoForge | 1.20.1 – 26.3 | Client-side only | 2026-09-20 |
| Right Proper GUI Scale | Forge | 1.7.10 | Client-side only | 2026-07-12 |
Questions
Does Optiscale need to be installed on the server?
Which loaders does Optiscale support?
Does Optiscale work with Iris or Oculus?
In the catalog
Optiscale is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 32,366 mods support Minecraft 1.21.1.
More from darimus
Similar mods
What the author says
Note: Mod is totally resigned for 1.20.1. Instead of integrating with the video screen, the scaling is now only configurable with a hotkey (default: F7, change in Key Bindings menu).
Official listing
- Modrinth page
- modrinth.com/mod/optiscale
- Owner
- darimus
- Published
- 2024-03-13
- Updated on Modrinth
- 2026-06-27
- Facts verified
- 2026-10-15