NoFingerPrint
by master7720
With NoFingerPrint, players on Fabric block a method that lets some vanilla servers track their accounts through resource pack fetches.
What it does
The mod targets a weakness in how the game handles server-sent resource packs. A vanilla server can send a resource pack, and the game then creates a folder whose path the server chooses. Some servers have used this step to build unique device fingerprints and log identifiers tied to an account, a quiet privacy leak that has already been used on PvP servers with cracked accounts.
NoFingerPrint is installed on the client only, so players who want to keep the fingerprinting from happening run it themselves and the server side needs no change. It is licensed under a custom license and is not open source, though its source code is publicly available. Files exist for 1.21.4 only, with 1.0.0 as the sole Fabric build, published on 2025-11-18 and last updated on the same day.
Key features
Blocks the fingerprint path
The mod stops the server-chosen folder from being used to identify the device.
Prevents identifier logging
Identifiers that a server could otherwise link to a player account are no longer produced.
Client-only install
Only the player's game needs the mod; the server does not have to run it or be changed.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Joining unfamiliar servers
Players who connect to public or cracked servers can run the mod to limit what a server can learn about their device.
Who it’s for: Players who join multiplayer servers they do not run themselves, especially those concerned about privacy and account tracking through resource pack fetches.
How it compares
Custom Enchantment Downloader, Custom Dimension Downloader, Custom Biome Downloader and Custom Advancement Downloader are all Fabric client-side mods released under the MIT License, with files for 1.21.4 – 1.21.5. They fetch custom content and are not privacy tools, so they do not address the resource pack fingerprinting that NoFingerPrint targets. Datapack Downloader (fork) is an open source Fabric mod for client and server, with files for 1.20.2 – 26.3, and it requires both sides to run it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| NoFingerPrint | Fabric | 1.21.4 | Client-side only | 2025-11-18 |
| Custom Enchantment Downloader | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-06-12 |
| Custom Dimension Downloader | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-06-12 |
| Custom Biome Downloader | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-06-12 |
| Custom Advancement Downloader | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-06-12 |
| Datapack Downloader (fork) | Fabric | 1.20.2 – 26.3 | Client and server | 2026-09-16 |
Questions
Does NoFingerPrint need to be installed on the server?
Which Minecraft version does NoFingerPrint support?
In the catalog
NoFingerPrint is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 17,979 mods support Minecraft 1.21.4.
Similar mods
What the author says
NoFingerprint is a fabric client-side mod that fixes an exploit in Minecraft’s resource pack downloader. This vulnerability allows malicious servers to fingerprint your Minecraft account by forcing all resource pack downloads to occur in a server-controlled folder path. This creates a silent privacy leak and has…
Official listing
- Modrinth page
- modrinth.com/mod/nofingerprint
- Owner
- master7720
- Published
- 2025-11-18
- Updated on Modrinth
- 2025-11-18
- Facts verified
- 2026-10-15