ModsFinder

Log Filter

by LMaxRouterCN

Log Filter, by LMaxRouterCN, is a Forge mod that drops unwanted lines from the Minecraft log before they reach the console or log files.

ForgeClient and serverMozilla Public License 2.0Open source1.20.1

What it does

The mod hooks into log output before Minecraft writes it to the console and log files, then decides for each entry whether it is kept. Developers and players use it to cut down spam, so critical errors stand out and disk space is saved. Filtering can match by regular expression, by exact whole-line text (case-sensitive), by logger name, by source class or mod package, and by log level from TRACE through FATAL. Hierarchical filtering applies these together.

Rules are set in a configuration file that the mod generates on first launch, so a single start of the game creates it. A whitelist mode lets exclusion rules be written so that important entries, such as critical errors, are never removed by accident. Matching rules remove a line even when other rules would match it. A built-in deduplication cache avoids processing identical messages again and again.

Log Filter runs on client and server, so the server and every player need it. Files are published for Forge only, for 1.20.1, and the mod is open source under the Mozilla Public License 2.0. Source code and an issue tracker are public. Developers who want to build it themselves find the compiled JAR in build/libs.

Key features

  1. Regex filtering

    Regular expressions match log content, so specific messages can be removed with precise patterns.

  2. Exact match filtering

    Whole lines of text can be removed when they match a given string exactly.

  3. Logger and class filtering

    Entries can be dropped by logger name, source class or mod package name, with hierarchical rules.

  4. Log level filtering

    Blocking TRACE or DEBUG output takes one setting, and levels from TRACE to FATAL are all available.

  5. Whitelist mode

    Exclusion rules protect important entries so that critical errors are not deleted by mistake.

  6. Deduplication cache

    A built-in cache skips logs that have already been processed, avoiding repeated work on the same messages.

Compatibility

Latest build for each game version and loader.

1.20.11.1.1+1.20.1-forge
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

SilenceVS runs on the server alone, so players can join without installing it. It is open source under the MIT License and published for Forge 1.20.1. Console Filter is not open source, runs on Fabric, Forge and NeoForge across 1.20.1 – 26.2, and works on either side, and neither needs it. Log Filter, by contrast, needs both the server and every player, is open source and is limited to Forge 1.20.1.

ModLoadersGame versionsEnvironmentUpdated
Log FilterForge1.20.1Client and server2026-10-10
SilenceVSForge1.20.1Server required, client optional2025-08-18
Console FilterFabric, Forge and NeoForge1.20.1 – 26.2Client or server, optional2026-07-01

Questions

Does Log Filter need to be installed on both sides?

Yes. Installation covers the server and each player's game.

Which Minecraft version does Log Filter support?

Forge builds are published for 1.20.1 only.

How are the filtering rules set?

The mod generates a default configuration file on first launch. Rules for regex, exact match, logger, class, and level are written there.

More from LMaxRouterCN

All projects
VS Addition continue1.20.1

What the author says

A lightweight log filtering mod designed to reduce spam in the console and log files, allowing developers and players to focus on critical errors and save disk space. Logs are filtered only when their content is exactly identical (case-sensitive).
LMaxRouterCN, on the Modrinth page

Official listing

Owner
LMaxRouterCN
Published
2026-01-23
Updated on Modrinth
2026-10-10
Facts verified
2026-10-15
Open on ModrinthCompare