KastSize — Aspect Ratio Stretch
by kast1ent
KastSize lets players stretch the game picture to a chosen aspect ratio, using presets or a custom value set in its settings menu.
What it does
KastSize changes how the game picture fills the window. Players pick one of several aspect ratio presets, or enable a custom mode and enter their own preferred ratio. The result is a stretched image, the look often sought in competitive play where a narrower or wider view is preferred. The settings menu lets players fine-tune the chosen display, and the saved configuration is applied automatically each time the game starts.
Only the client needs the mod, so a server can run without it and players join without any change on their side. Fabric API is required and must be installed alongside KastSize. Files are published for Fabric only, across 17 release versions, and the mod is released under All rights reserved and is not open source. The latest Fabric file is 1.0.0 for 26.3, dated 2026-09-19.
Key features
Aspect ratio presets
A set of ready-made aspect ratio stretch presets can be chosen without entering any values by hand.
Custom ratio mode
A custom mode can be enabled so players set their own preferred aspect ratio instead of a preset.
Settings menu
A settings menu holds the presets, the custom option and the fine-tuning controls for the display.
Saved configuration
The chosen preset or custom value is stored and applied automatically on later launches.
Gallery
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 versions with builds
1.16.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Competitive play
Players who prefer a stretched, narrower view of the game can set a ratio that suits their playstyle.
Who it’s for: Players who want to change the aspect ratio of the game picture on their own client. Servers do not need the mod and no server install is required.
How it compares
Visual Ratio is a Fabric client mod for 1.21.8 – 26.2 under the MIT License and is open source. Ence size is a Fabric client mod that targets only 1.21.11 and is not open source, released under the MIT License. aspect ratio (width screen) is a Fabric client mod for 1.21 – 1.21.4 under All rights reserved, not open source. KastSize covers the widest span of these versions.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| KastSize — Aspect Ratio Stretch | Fabric | 1.16.5 – 26.3 | Client-side only | 2026-09-19 |
| Visual Ratio | Fabric | 1.21.8 – 26.2 | Client-side only | 2026-07-30 |
| Ence size | Fabric | 1.21.11 | Client-side only | 2026-06-27 |
| aspect ratio (width screen) | Fabric | 1.21 – 1.21.4 | Client-side only | 2026-03-16 |
Questions
Does KastSize need Fabric API?
Does a server need KastSize installed?
Which game versions have KastSize files?
In the catalog
KastSize — Aspect Ratio Stretch is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 8,071 mods support Minecraft 26.3.
More from kast1ent
Similar mods
What the author says
Версия игры: 1.21.10 Loader: Fabric Environment: Client (на сервер ставить не нужно) --- Game version: 1.21.10 Loader: Fabric Environment: Client (no server install needed)
Official listing
- Modrinth page
- modrinth.com/mod/kastsize-aspect-ratio-stretch
- Owner
- kast1ent
- Published
- 2025-12-13
- Updated on Modrinth
- 2026-09-19
- Facts verified
- 2026-10-15