InvisibleGlass
by Mamtak
InvisibleGlass is a client-side Fabric mod that lets players change how glass blocks look in Minecraft, without altering gameplay.
What it does
Glass blocks can be made more transparent or more solid in appearance through a set of visual settings. Players who prefer tidier builds, clearer sightlines or a sparer look for glass can change its opacity and related settings on the client. Because only the rendering changes, block collision, crafting and survival rules stay as they are in vanilla.
The mod runs on the Fabric loader and needs MamtakLib, a library from the same author, to be installed alongside it. Since it only affects the client, a server can run without it and players can still join a server that does not have it. Files are published for 1.21 – 1.21.11 across 12 release versions, with 1.0 for 1.21.11 as the latest build, and the mod is released under All rights reserved, so it is not open source.
Key features
Glass opacity control
Opacity of glass blocks can be set to a custom value, so the level of see-through effect is chosen by the player.
Visual adjustments
Several visual settings sit alongside opacity to shape how glass looks in the game window.
Lightweight design
The mod is kept small and simple, adding only rendering changes with no new blocks, items or recipes.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Cleaner builds
Builders who want glass walls and windows to read as clear panes can lower the visible frame of each block.
Better visibility
Players who find glass hard to see in dim areas can raise the opacity so panes stand out from the surroundings.
Who it’s for: Players who want a different look for glass in their client, and builders working on structures where glass is a major visual element. The mod is not needed on servers.
How it compares
Chat Opacity is a Fabric client-side mod for 1.21.11 with the same license, so it does not change gameplay either, but it changes the chat window rather than glass. Glass Drops Always is a Fabric mod for 1.21.11 that runs on both client and server under the MIT License, which means every player and the server must install it, unlike InvisibleGlass.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| InvisibleGlass | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-05-18 |
| Chat Opacity | Fabric | 1.21.11 | Client-side only | 2026-04-17 |
| Glass Drops Always | Fabric | 1.21.11 | Client and server | 2026-02-18 |
Questions
Does InvisibleGlass need to be installed on the server?
Does InvisibleGlass require any other mod?
Does InvisibleGlass change how glass behaves in gameplay?
In the catalog
InvisibleGlass is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Mamtak
Similar mods
What the author says
InvisibleGlass is a lightweight client-side Fabric mod that lets you customize how glass looks in Minecraft. InvisibleGlass is great if you want cleaner builds, better visibility, or a more minimal glass look without changing gameplay.
Official listing
- Modrinth page
- modrinth.com/mod/invisibleglasss
- Owner
- Mamtak
- Published
- 2026-05-18
- Updated on Modrinth
- 2026-05-18
- Facts verified
- 2026-10-15