TFCGenViewer

Preview your TFC worlds before creating them!

68.9K Downloads

forgeneoforgeutilityworldgen

About this Mod

Adds an additional button to the "More" tab of the world creation screen, which opens a preview of the world to be created

This preview has several buttons for configuring the preview. In addition to the configuration options there are four other buttons

Apply: Applies the preview configuration to the review and generates a new image
Save: Saves the configuration to the world creation context, preserving things like continentalness and (if not empty) the seed and returns to the "More" tab
Cancel: Returns to the "More" tab without saving any world configurations
Current Seed: Displays the seed currently being previewed, clicking the button copies the seed to the clipboard

Available Versions

TFCGenViewer 2.1.0release

MC 1.21.1neoforge

June 13, 2026

TFCGenViewer 2.0.3release

MC 1.21.1neoforge

February 21, 2026

TFCGenViewer 2.0.2release

MC 1.21.1neoforge

February 13, 2026

TFCGenViewer 2.0.1release

MC 1.21.1neoforge

February 8, 2026

TFCGenViewer 2.0.0release

MC 1.21.1neoforge

January 30, 2026

How to Install TFCGenViewer on Your Server

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "TFCGenViewer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.1, 1.20.1

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

TFCGenViewer server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is TFCGenViewer compatible with forge and neoforge?

TFCGenViewer officially supports forge, neoforge for Minecraft 1.21.1, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with TFCGenViewer – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if TFCGenViewer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.