TNT Visualizer
by EmJexi
TNT Visualizer is a Fabric client mod that draws the predicted paths of primed TNT, including TNT dripstone and rodding trajectories.
What it does
When a player is near TNT, the mod shows where a primed block will travel and how far it will reach. Trajectories for regular TNT and TNT dripstone can each be toggled, and a trajectory rod lets a player inspect the prediction at a chosen spot. Blocks of TNT that sit near enough to be set off by a blast get marked as well, and a countdown to the explosion is displayed.
The display is aimed at practice rather than play in general: a player can plan a launch or a chain before lighting it, and a configuration toggle keeps the overlay off when it is not wanted. A beta positioning helper for rodding setups is included but still experimental, so its results may need checking against the game.
TNT Visualizer is released under the MIT License and is not open source in the sense of publishing the source. It is a client-side mod, so only the player needs it and servers run without it. Files are published for Fabric only, across 16 game versions 1.20 – 1.21.8, with 1.1.1-1.21.6-1.21.8 as the latest file for 1.21.8.
Key features
Dripstone trajectories
Predicted paths for TNT launched by dripstone are drawn on screen before the charge is lit.
Regular TNT trajectories
The path of a primed TNT block can be shown or hidden, so the overlay stays out of the way when unused.
Trajectory rod
A rod lets a player point at a spot and check where a block would land from there.
Activation range display
TNT blocks close enough to be set off by an explosion are highlighted, and an explosion timer is shown.
Rodding positioning helper
An experimental beta helper assists with placing rodding setups, and its feature toggle lives in the configuration.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x9 of 9 versions with builds
1.20.x7 of 7 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who build or test TNT contraptions in single-player or on a server where the client mod is installed. Anyone who wants the overlay only during practice can switch it off in the configuration.
How it compares
Pearl Trajectories is a Fabric client mod under the MIT License, open source, that draws ender pearl paths for 1.20.1 – 26.1.2, so it covers a different projectile. Sightline is a Fabric client mod under the GNU General Public License v3.0 or later, open source, for 1.21.10 – 1.21.11, and it is not limited to TNT. TNT Visualizer targets 1.20 – 1.21.8 instead.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| TNT Visualizer | Fabric | 1.20 – 1.21.8 | Client-side only | 2025-10-25 |
| Pearl Trajectories | Fabric | 1.20.1 – 26.1.2 | Client-side only | 2026-08-04 |
| Sightline | Fabric | 1.21.10 – 1.21.11 | Client-side only | 2026-05-21 |
Questions
Does TNT Visualizer need to be installed on the server?
Which loader does TNT Visualizer use?
How is the configuration toggled?
In the catalog
TNT Visualizer is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 17,695 mods support Minecraft 1.21.8.
Similar mods
What the author says
TNT Visualizer allows you to see predicted TNT and dripstone trajectories, as well as potential TNT rodding trajectories, making practicing with TNT easier! Configure with /tnttoggle: - trajectory - toggle regular TNT trajectories - trajectory_rod - toggle TNT rodding trajectories - positioning - experimental rodding…
Official listing
- Modrinth page
- modrinth.com/mod/tnt-visualizer
- Owner
- EmJexi
- Published
- 2025-10-10
- Updated on Modrinth
- 2025-10-25
- Facts verified
- 2026-10-15