Firesight
A mod that visually indicates possible fire spread.
- Loaders
- Fabric
- Downloads on Modrinth
- 1.8K
- Followers on Modrinth
- 3
- versions
- 7
- Updated
- June 25, 2026Jun 25
- Published
- in 2025
At a glance
Install in the game only; not needed on the server
Firesight is a Minecraft Fabric mod that provides visualization to help players understand fire spread mechanics in Minecraft. It uses Litematica and MaLiLib and offers real-time block highlighting to show where fire can spread.
An air block will be highlighed if fire can spread to it. This works in a radius around the player that can be configured. Setting it to a high number does impact frames. 
The visualisation can be turned off using a hotkey (default F8), and a settings menu can be opened using a hotkey (default M + F8). 
It's my first mod. I am not responsible for killing your frames, although if you have so many places for the fire to spread that you get lag, you probably have bigger issues.
FAQ
How to install Firesight?
Install Fabric for your Minecraft version, download Firesight for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Firesight support?
Firesight has builds for Minecraft 1.21.1, 1.21.4, 1.21.8, 1.21.10–26.2.
Is Firesight needed on the server?
Client only — no need to install it on the server
