Firesight
by hekker-man
Firesight, a Fabric client mod, highlights the air blocks where fire can spread so players can see the mechanics before a blaze gets out of hand.
What it does
Firesight draws a visual marker on each air block that fire could reach, using block highlighting in the style of Litematica and MaLiLib. The highlight refreshes in real time around the player, and the radius of the area it covers is set in the configuration. Because the overlay only shows where fire may spread, it helps players learn how fire behaves in their builds and farms.
Installation needs Fabric on the client and nothing else; the mod has no server component and changes nothing on the server side. Files target Fabric for game versions 1.21.1 – 26.2 across nine release versions, with 1.3-26.2 for 26.2 as the latest file, released on 2026-06-25. The code is open source under the CC0 1.0 Universal license, and source code and an issue tracker are public.
Key features
Fire spread highlighting
Air blocks that fire could spread into are marked on screen, so the spread path is visible before a fire starts.
Adjustable radius
The area around the player that gets highlighted is set in the configuration, which limits how many markers are drawn at once.
Hotkey toggle
The overlay can be switched off and on with a hotkey, which defaults to F8, and the settings menu opens with M plus F8.
Frame cost on high settings
A large radius draws many more markers and can lower the frame rate, so the author notes that heavy fire areas may lag.
Gallery
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x5 of 5 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who build near flammable blocks, and players who want to see how fire spread works in a world, will get the most from Firesight. Servers do not need it, since only the client runs the overlay.
How it compares
NoSpread is server-side only and open source under The Unlicense, with files for 1.21 – 26.1.2, so it changes how fire behaves on a server rather than showing it on screen. Sprint/Sneak Indicator is client-side only, open source under the MIT License, and published for 1.21.2 – 26.2, so it displays player movement state rather than fire spread. Firesight, by contrast, only shows fire spread on the client and does not change any gameplay.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Firesight | Fabric | 1.21.1 – 26.2 | Client-side only | 2026-06-25 |
| NoSpread | Fabric | 1.21 – 26.1.2 | Server-side only | 2026-05-27 |
| Sprint/Sneak Indicator | Fabric | 1.21.2 – 26.2 | Client-side only | 2026-06-19 |
Questions
Does Firesight need to be installed on the server?
Which loader does Firesight use?
How is the overlay turned off?
In the catalog
Firesight is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 13,894 mods support Minecraft 26.2.
Similar mods
What the author says
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…
Official listing
- Modrinth page
- modrinth.com/mod/firesight
- Owner
- hekker-man
- Published
- 2025-05-14
- Updated on Modrinth
- 2026-06-25
- Facts verified
- 2026-10-15