ModsFinder

EmitLightTag

by ImEden6

EmitLightTag marks every block that can emit light with a shared tag, so JEI and EMI's search can list them in one place.

FabricNeoForgeClient or server, optionalMIT LicenseOpen source1.20.1 – 1.21.1

What it does

Searching a heavily modded pack for blocks that give off light usually means scrolling through long lists or hoping nothing was missed. EmitLightTag handles this at runtime: it scans every loaded block, vanilla and modded alike, and tests each possible state for light output, including conditional sources. Lamps that only light up when powered, and candles or sea pickles that glow under specific conditions, are counted as well.

The scan result is saved to a tag that mirrors the matching items, and typing #emits_light into the JEI or EMI search bar then returns the full list. The tag merges with entries from a datapack or another mod that already defines the same tag instead of overwriting them. The mod only affects search and leaves recipes, loot tables and crafting untouched.

EmitLightTag requires the JEI or EMI plugin code to work with the search. It is built for Fabric and for NeoForge, with Fabric builds across seven game versions and the NeoForge file for 1.21.1. Either side can run it, so it is optional for clients and servers alike. It is released under the MIT License and is open source; the source code is published.

Key features

  1. Runtime block scan

    Every loaded block is checked, vanilla and modded alike, for light-emitting states at runtime.

  2. Conditional light sources

    Blocks that emit light only under certain states, such as a redstone lamp once it is powered, are included.

  3. Tag-based search

    Results are written to a tag, so JEI and EMI find them with the #emits_light search term.

  4. Non-destructive tag merging

    Entries from datapacks or other mods that define the same tag are merged, not replaced.

  5. Search-only effect

    The mod changes what the search shows and leaves recipes, loot tables and crafting unchanged.

Compatibility

Latest build for each game version and loader.

1.21.1Not available1.0.0
1.20.61.0.0Not available
1.20.51.0.0Not available
1.20.41.0.0Not available
1.20.31.0.0Not available
1.20.21.0.0Not available
1.20.11.0.0Not available
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Questions

Does EmitLightTag require JEI or EMI?

It requires the JEI or EMI plugin code to work with the search. Both already support tag search, so the mod works the same whether one or both are installed.

Which loaders and versions does EmitLightTag support?

Fabric builds exist for seven game versions, and the NeoForge file is for 1.21.1. The latest Fabric file targets 1.20.6 and the latest NeoForge file targets 1.21.1.

Does EmitLightTag have to be installed on a server?

No. It is optional for both clients and servers, since it only changes what the search shows.

In the catalog

EmitLightTag is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Utility mods36,990Fabric modsMods for 1.21.132,366

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What the author says

Searching a heavily modded pack for every block that gives off light usually means scrolling through JEI/EMI by hand and hoping you didn't miss anything. This mod builds the list for you. At runtime, it scans every block currently loaded, vanilla or modded, and checks whether any of its possible states can emit…
ImEden6, on the Modrinth page

Official listing

Owner
ImEden6
Published
2026-09-07
Updated on Modrinth
2026-09-07
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare