Custom nether portal size
by Srula
Custom nether portal size lets a Nether portal frame grow well past the vanilla limit of 21 blocks, up to 2,000,000 blocks, instead of the standard 2x3 minimum and small maximum.
What it does
Vanilla Nether portals are restricted in how large their frames may be. This Fabric mod removes those size restrictions, so a portal can be built from a 2x3 frame and extended upward to a much larger maximum size. The change is lightweight and affects portal construction only. Fabric API is required to run it.
Because the mod runs on both client and server, both sides need it for portals to form at the larger sizes. The author notes that the logic must match on each side to work correctly. The mod is released under All rights reserved and is not open source.
Key features
Removed size limits
Nether portal frames are no longer capped at the vanilla maximum and can be built far larger.
Nearly unlimited height
A portal can be extended upward from the standard 2x3 frame to a maximum of 2,000,000 blocks.
Lightweight change
The mod alters only portal size rules and leaves the rest of the vanilla portal behavior in place.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Questions
Does Custom nether portal size need Fabric API?
Does the mod need to be installed on the server?
In the catalog
Custom nether portal size is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Srula
Similar mods
What the author says
A lightweight Fabric mod that removes the restrictive vanilla limits for Nether Portals. Features: Maximum size: Extends the limit from 21 blocks to 2,000,000 blocks. Server-side & Client-side: Required on both for correct logic.
Official listing
- Modrinth page
- modrinth.com/mod/custom-nether-portal-size
- Owner
- Srula
- Published
- 2026-02-03
- Updated on Modrinth
- 2026-02-03
- Facts verified
- 2026-10-15