SeedMapper
by xpple
SeedMapper lets players explore a map generated from the world seed set in their configuration, with a minimap in the heads-up display.
What it does
Opening the seed map shows an explorable view of the terrain for the configured seed. Players move the map by dragging with the mouse and zoom out with the scroll wheel, and a feature toggle at the top of the screen controls which features are visible. A command, especially useful alongside the sm:source command, opens the same map directly from chat.
A minimap is drawn in the heads-up display from the configured seed and shows the same features as the seed map. Depending on whether the RotateMinimap option is enabled, the minimap rotates with the player. Changing dimension updates the minimap automatically, and the MinimapOffsetX, MinimapOffsetY, MinimapWidth and MinimapHeight settings customise its position and size.
The mod runs on Fabric only, with no other loader, and it is a client-side only mod, so players install it and servers do not need it. It is released under the GNU Lesser General Public License v3.0 or later and is open source. Files cover 35 release versions 1.16.5 – 26.3, and snapshot builds are published as well. Its bundled libraries are BetterConfig and SimpleWaypoints.
Key features
Explorable seed map
A full-screen map of the terrain generated from the configured seed, opened from a keybinding or command.
Feature toggles
Buttons at the top of the seed map control which features appear on the map.
Seed minimap
A heads-up display minimap built from the configured seed, with a player-relative rotation option.
Customisable minimap layout
Offset, width and height values position and size the minimap on screen.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x1 of 1 version with builds
This mod also publishes snapshot builds. Snapshots are not shown in the matrix.
Requirements
Dependencies declared by the latest file for each loader.
Embedded 2
Use cases
Who it’s for: Players who load a known world seed and want to see its terrain before exploring, and players who use the sm:source command to check a seed.
How it compares
Fake random seed is a client and server mod for 1.21.4 – 1.21.10 under the GNU General Public License v3.0 only, and it is open source. Panda Per-World-Seed is server-side only, open source under the CC0 1.0 Universal license and published for 1.21.1 – 26.3, so players join without it. XaeroPatcher is client-side only for 1.21.11, is not open source and is under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| SeedMapper | Fabric | 1.16.5 – 26.3 | Client-side only | 2026-10-07 |
| Fake random seed | Fabric | 1.21.4 – 1.21.10 | Client and server | 2025-10-12 |
| Panda Per-World-Seed | Fabric | 1.21.1 – 26.3 | Server-side only | 2026-10-04 |
| XaeroPatcher | Fabric | 1.21.11 | Client-side only | 2026-07-19 |
Questions
Does SeedMapper need Fabric API?
Does a server need SeedMapper installed?
Which game versions does SeedMapper support?
Can SeedMapper be used on an older version of Minecraft?
In the catalog
SeedMapper is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.
More from xpple
Similar mods
What the author says
Always use the latest (stable) version of SeedMapper! If you want to play on an older version of Minecraft, use ViaFabricPlus. This mod allows you to use the latest features of SeedMapper, while still being able to play on older Minecraft versions. Sometimes it may be necessary to click the option for skipping the…
Official listing
- Modrinth page
- modrinth.com/mod/seedmapper
- Owner
- xpple
- Published
- 2021-05-25
- Updated on Modrinth
- 2026-10-07
- Facts verified
- 2026-10-15