CurseForge · Minecraft mod
Mod Scanner
Creates a simple log file (in modscanner_logs) that tells you how many mods loaded correctly (X/Y) and which ones failed.
Quick answer
Which Mod Scanner release should I use?
Mod Scanner modscanner-1.0.0[Fabric].jar targets 1.20.2, 1.21.2-Snapshot, 1.21 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Mod Scanner required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Mod Scanner modscanner-1.0.0[Fabric].jar need?
modscanner-1.0.0[Fabric].jar. Change the file and its required mods may change too.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Mod Scanner without breaking your instance.
Built for Mod Scanner modscanner-1.0.0[Fabric].jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use modscanner-1.0.0[Fabric].jar. It targets 1.20.2, 1.21.2-Snapshot, 1.21 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside modscanner-1.0.0[Fabric].jar. It opens that exact file at the source.
About this project
What does Mod Scanner add?
Mod Scanner
Have you ever asked yourself: "Did all my mods actually load?"
If you're a modpack creator or a player running a large list of mods, you know that feeling. The game launches, but something feels wrong.
Mod-Scanner is a simple, lightweight diagnostic tool designed to answer that one crucial question.
How It Works
Mod Scanner automatically runs when you start the game and provides a clear, simple report in its own log file. (modscanner_logs/debug.txt)
- ✅ Scans Your
/modsFolder: It checks every.jarfile to see what's there. - 📰 Creates a Clean Log Report: It generates an easy-to-read report telling you exactly how many mods were loaded out of the total number found.
- ❗ Pinpoints the Problem! If a mod fails to load, Mod Scanner will list the exact
.jarfile name in the report. No more guesswork!
Example Log Report:
Scan complete. Loaded 120 out of 125 mods from the /mods folder.
The following 1 JAR file(s) were NOT loaded:
- some-cool-mod-1.6.9.jar
- some-junky-mod-4.2.jar
- another-mod-for-fabric.jar
How to Use It
- Install the mod and its dependency, Fabric API.
- Launch the game.
- Check the /
modscanner_logs/debug.txtfile inside your main Minecraft folder to see the report.
Important Notes
- This is a client-side only mod. It does not need to be installed on a server.
- This mod adds no in-game items or features. Its only purpose is to provide a diagnostic report.
Project description from CurseForge.
Pick your setup
Mod Scanner by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.7
1 loader build1.21.6-snapshot
1 loader build1.21.6
1 loader build1.21.5-Snapshot
1 loader build1.21.5
1 loader build1.21.4-Snapshot
1 loader build1.21.4
1 loader build1.21.3
1 loader build1.21.2-Snapshot
1 loader build1.21.2
1 loader build1.21.1-Snapshot
1 loader build1.21.1
1 loader buildShowing the newest 12 of 23 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Mod Scanner versions and loaders
modscanner-1.0.0[Fabric].jar
modscanner-1.0.0.jar
4 Jul 2025
Looking for an older file? The official CurseForge project page is in Resources.