OpenPaC BlueMap - Refreshed
by alexiokay
OpenPaC BlueMap - Refreshed is a NeoForge server mod that draws Open Parties and Claims land claims onto the BlueMap web map.
What it does
Claims made with Open Parties and Claims appear on the BlueMap web map without manual steps. The mod is an unofficial port and remapped fork of the original OpenPaC BlueMap, updated for Minecraft 1.21.1 on NeoForge. Its event system refreshes BlueMap whenever a player changes a claim, so the map stays current between map renders.
Per-player updates are applied incrementally, and markers are cached by player UUID, which keeps the map from being rebuilt in full. The release notes list fixes for ghost chunks, memory leaks and stale data, and removal of delays of around ten minutes in the earlier version. Since the mod runs only on the server, players join without installing anything and see the claims through the map.
Open Parties and Claims is required and must be installed beside this mod. The mod is server-side only, so only the server needs it. Its 1.2.1 file for 1.21.1 was published on 2025-09-13 under the MIT License, and the source code is public.
Key features
Claim markers on BlueMap
Land claims from Open Parties and Claims are drawn as markers on the BlueMap web map.
Automatic updates
The map refreshes when a claim is created, changed or removed, so the markers match the current claims.
Incremental per-player updates
Only the changed data for each player is sent, and UUID-based marker caching avoids a full rebuild.
Ghost chunk and stale data fixes
The fork addresses ghost chunks, memory leaks and stale map data that the original version left behind.
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
Use cases
Public claim maps
Server owners who want members and visitors to see claimed areas on a web map can show them through BlueMap.
Who it’s for: Server owners running NeoForge 1.21.1 who already use Open Parties and Claims and want its claims shown on a BlueMap web map.
How it compares
OpenPaC BlueMap - Remapped is a Fabric and Quilt server mod for 1.20.1 – 1.20.4 under the MIT License, so it does not run on NeoForge 1.21.1. OpenPaC BlueMap - Updated is a Fabric server mod for 1.21.11 under the GNU General Public License v3.0 or later, and it is open source as well. This mod is the NeoForge 1.21.1 option among them.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| OpenPaC BlueMap - Refreshed | NeoForge | 1.21.1 | Server-side only | 2025-09-13 |
| OpenPaC BlueMap - Remapped | Fabric and Quilt | 1.20.1 – 1.20.4 | Server-side only | 2024-04-11 |
| OpenPaC BlueMap - Updated | Fabric | 1.21.11 | Server-side only | 2026-03-27 |
Questions
Does OpenPaC BlueMap - Refreshed need Open Parties and Claims?
Does a player need this mod on the client?
Which loader and version does this mod support?
In the catalog
OpenPaC BlueMap - Refreshed is one of 8,016 Management mods on ModsFinder, and one of 2,689 Management mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from alexiokay
Similar mods
What the author says
This mod displays land claims from the Open Parties and Claims (OPaC) mod directly on your BlueMap web maps in real-time. An Unofficial Forge/NeoForge Port of OpenPaC BlueMap Remapped, which itself is a fork of OPaC BlueMap.
Official listing
- Modrinth page
- modrinth.com/mod/openpac-bluemap-refreshed
- Owner
- alexiokay
- Published
- 2025-09-13
- Updated on Modrinth
- 2025-09-13
- Facts verified
- 2026-10-15