
Modrinth · Minecraft mod
Old Debug Screen
This mod restores the old debug screen (Old F3 Menu) that was changed in version 1.21.9. (Revert F3 Menu)
Quick answer
Which Old Debug Screen release should I use?
Old Debug Screen 1.0.2+26.2 targets 26.2 with Fabric. It must be installed on the client. Do not install it on the dedicated server. All 1 required mods have matching files.
Where it goes
Is Old Debug Screen required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
This file is marked client-only.
What else does Old Debug Screen 1.0.2+26.2 need?
1.0.2+26.2. 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 Old Debug Screen without breaking your instance.
Built for Old Debug Screen 1.0.2+26.2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.2+26.2. It targets 26.2 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
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.2+26.2. It opens that exact file at the source.
About this project
What does Old Debug Screen add?
This mod restores the old debug screen from Minecraft, which was changed in version 1.21.9. The update removed some features that players found useful for debugging and gameplay. This mod brings back those original features for a more informative experience.
Keywords: Reverts the debug screen, Old F3 Menu, Old F3 Debug Screen
Before

After

Project description from Modrinth.
Pick your setup
Old Debug Screen by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.2
1 loader build26.1.2
1 loader build26.1.1
1 loader build26.1
1 loader build1.21.11
1 loader build1.21.10
1 loader build1.21.9
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Old Debug Screen versions and loaders
1.0.2+26.2
OldDebugScreen-1.0.2+26.2.jar
11 Aug 2026
1.0.1+26.2
OldDebugScreen-1.0.1+26.2.jar
23 Jul 2026
1.0.0+26.2
OldDebugScreen-1.0.0+26.2.jar
8 Jul 2026
1.0.0+26.1
OldDebugScreen-1.0.0+26.1.jar
21 Apr 2026
1.0.0+1.21.11
OldDebugScreen-1.0.0+1.21.11.jar
15 Mar 2026
1.0.0+1.21.9
OldDebugScreen-1.0.0+1.21.9.jar
15 Mar 2026
Looking for an older file? The official Modrinth project page is in Resources.