NSFW Blocker
by m9240
Banner patterns and map artwork that a player does not want to see are hidden by NSFW Blocker, a Fabric mod that runs only on the client.
What it does
Players who want certain banner designs or map images kept out of view can use NSFW Blocker on the Fabric loader. It works on a single client and does not change the game data stored in worlds, so the original banners and maps remain intact on disk and on any server. Blocked visuals are replaced with plain white colouring at render time.
The mod is lightweight and completely client-side, so only the player who installs it sees the change, and a server does not need it to run. Configuration is handled locally, and no external services are required. Builds are published for Minecraft 1.21.11 only, under the MIT License, and the code is not open source.
Installing it on a server has no effect, because the filtering happens entirely on the client side. Players who join a server that uses other banner or map content still see those items unless the client filter covers them.
Key features
Banner pattern filtering
Unwanted banner patterns are hidden on the client, so they appear as blank white shapes instead.
Map artwork filtering
Map images that match the filter are replaced with white colouring, leaving the map item itself usable.
Original data unchanged
The filter alters only what is drawn on screen, so saved worlds and the underlying game data stay as they were.
Lightweight client mod
The mod is small and runs entirely on the client, adding no load to the server it connects to.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Shared family devices
A parent can run the mod on a child's client to hide banner and map artwork that should not appear in that account's game.
Public community play
A player who joins servers with unmoderated builds can keep certain banner or map imagery off their own screen without asking the server owner to change anything.
Who it’s for: Players who want to hide certain banner or map imagery on their own client, including those on shared devices or in public multiplayer. Server owners do not need to install anything.
How it compares
MuteIt is a client-side Fabric mod for 1.21.6 – 1.21.8 under the Apache License 2.0, and it filters chat rather than banners or maps. Custom Message Blocker is client-side on Fabric for 1.21 – 26.1.2 under the MIT License, and it also works on chat messages. NSFW Blocker covers only banners and maps, and it targets 1.21.11 alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| NSFW Blocker | Fabric | 1.21.11 | Client-side only | 2026-08-11 |
| MuteIt | Fabric | 1.21.6 – 1.21.8 | Client-side only | 2025-09-01 |
| Custom Message Blocker | Fabric | 1.21 – 26.1.2 | Client-side only | 2026-09-18 |
Questions
Does NSFW Blocker need Fabric API?
Does NSFW Blocker have to be installed on a server?
Which game version does NSFW Blocker support?
In the catalog
NSFW Blocker is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
NSFW Blocker is a client-side Fabric mod designed to hide unwanted banner patterns and map artwork in Minecraft. The mod removes banner patterns from both placed banners and banner items, including banners displayed in inventories and hotbars. Blocked banners are shown with a white colouring.
Official listing
- Modrinth page
- modrinth.com/mod/nsfw-blocker
- Owner
- m9240
- Published
- 2026-08-11
- Updated on Modrinth
- 2026-08-11
- Facts verified
- 2026-10-15