StackDeobfuscator

Remaps logged stacktraces to readable mappings

6.7M Downloads

fabricutility

Rent Server with this Mod

Screenshots

About this Mod

Stack Deobfuscator

WARNING

This mod is obsolete for all Minecraft versions newer than 1.21.11. It will still be maintained for older versions.

Discord: https://discord.gg/XSB7jn9

Web Version: https://stackdeobf.net/

See wiki for configuration

What does this mod do?

All errors displayed in the console and all crash reports will be remapped from unreadable production names (e.g.
net.minecraft.class_310) to readable mapped names (e.g. net.minecraft.client.MinecraftClient).

This allows mod developers to more easily identify issues in a non-development environment, as the errors are instantly
human-readable.

Comparison

Before

[23:13:08] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.class_148: Manually triggered debug crash
         at net.minecraft.class_309.method_1474(class_309.java:509) ~[client-intermediary.jar:?]
         at net.minecraft.class_310.method_1574(class_310.java:1955) ~[client-intermediary.jar:?]
         at net.minecraft.class_310.method_1523(class_310.java:1180) ~[client-intermediary.jar:?]
         at net.minecraft.class_310.method_1514(class_310.java:801) ~[client-intermediary.jar:?]
         at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-1.19.4-client.jar:?]
         at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462) ~[fabric-loader-0.14.18.jar:?]
         at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.18.jar:?]
         at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.18.jar:?]
         at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:88) ~[NewLaunch.jar:?]
         at org.prismlauncher.EntryPoint.listen(EntryPoint.java:126) ~[NewLaunch.jar:?]
         at org.prismlauncher.EntryPoint.main(EntryPoint.java:71) ~[NewLaunch.jar:?]
Caused by: java.lang.Throwable: Manually triggered debug crash
         at net.minecraft.class_309.method_1474(class_309.java:506) ~[client-intermediary.jar:?]
         ... 10 more

After (yarn/quilt mappings)

[23:11:25] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.util.crash.CrashException: Manually triggered debug crash
         at net.minecraft.client.Keyboard.pollDebugCrash(Keyboard.java:509) ~[client-intermediary.jar:?]
         at net.minecraft.client.MinecraftClient.tick(MinecraftClient.java:1955) ~[client-intermediary.jar:?]
         at net.minecraft.client.MinecraftClient.render(MinecraftClient.java:1180) ~[client-intermediary.jar:?]
         at net.minecraft.client.MinecraftClient.run(MinecraftClient.java:801) ~[client-intermediary.jar:?]
         at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-1.19.4-client.jar:?]
         at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462) ~[fabric-loader-0.14.18.jar:?]
         at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.18.jar:?]
         at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.18.jar:?]
         at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:88) ~[NewLaunch.jar:?]
         at org.prismlauncher.EntryPoint.listen(EntryPoint.java:126) ~[NewLaunch.jar:?]
         at org.prismlauncher.EntryPoint.main(EntryPoint.java:71) ~[NewLaunch.jar:?]
Caused by: java.lang.Throwable: Manually triggered debug crash
         at net.minecraft.client.Keyboard.pollDebugCrash(Keyboard.java:506) ~[client-intermediary.jar:?]
         ... 10 more

After (mojang mappings)

[23:04:12] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.ReportedException: Manually triggered debug crash
         at net.minecraft.client.KeyboardHandler.tick(KeyboardHandler.java:509) ~[client-intermediary.jar:?]
         at net.minecraft.client.Minecraft.tick(Minecraft.java:1955) ~[client-intermediary.jar:?]
         at net.minecraft.client.Minecraft.runTick(Minecraft.java:1180) ~[client-intermediary.jar:?]
         at net.minecraft.client.Minecraft.run(Minecraft.java:801) ~[client-intermediary.jar:?]
         at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-1.19.4-client.jar:?]
         at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462) ~[fabric-loader-0.14.18.jar:?]
         at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.18.jar:?]
         at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.18.jar:?]
         at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:88) ~[NewLaunch.jar:?]
         at org.prismlauncher.EntryPoint.listen(EntryPoint.java:126) ~[NewLaunch.jar:?]
         at org.prismlauncher.EntryPoint.main(EntryPoint.java:71) ~[NewLaunch.jar:?]
Caused by: java.lang.Throwable: Manually triggered debug crash
         at net.minecraft.client.KeyboardHandler.tick(KeyboardHandler.java:506) ~[client-intermediary.jar:?]
         ... 10 more

Mappings Overview

Mappings are downloaded and parsed asynchronously. They are downloaded only once per version.
Yarn and Quilt refresh their version every 48 hours to check for updates.

Mappings	Compatible Minecraft Versions	Download Size (zipped¹)²	Cached Size (gzipped)²
Yarn	18w49a (1.14 snapshot) or higher	`1.4 MiB`	`1.4 MiB`
Quilt	1.18.2 or higher	`1.4 MiB` (+`1.1 MiB` below 1.19.2)	`1.4 MiB` (+`1.1 MiB` below 1.19.2)
Mojang	1.14.4 and 19w36a (1.15 snapshot) or higher	`9.0 MiB` (uncompressed) + `559.1 KiB`	`1.3 MiB` + `558.6 KiB`

¹: Mojang mappings are not compressed

²: Sizes as of 12th May 2024 (1.20.6 is latest)

Available Versions

StackDeobfuscator v1.4.3release

MC 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 20w14infinite, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 22w13oneblockatatime, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 23w12a, 23w13a, 23w13a_or_b, 23w14a, 23w16a, 23w17a, 23w18a, 1.20-pre1, 1.20-pre2, 1.20-pre3, 1.20-pre4, 1.20-pre5, 1.20-pre6, 1.20-pre7, 1.20-rc1, 1.20, 1.20.1-rc1, 1.20.1, 23w31a, 23w32a, 23w33a, 23w35a, 1.20.2-pre1, 1.20.2-pre2, 1.20.2-pre3, 1.20.2-pre4, 1.20.2-rc1, 1.20.2-rc2, 1.20.2, 23w40a, 23w41a, 23w42a, 23w43a, 23w43b, 23w44a, 23w45a, 23w46a, 1.20.3-pre1, 1.20.3-pre2, 1.20.3-pre3, 1.20.3-pre4, 1.20.3-rc1, 1.20.3, 1.20.4-rc1, 1.20.4, 23w51a, 23w51b, 24w03a, 24w03b, 24w04a, 24w05a, 24w05b, 24w06a, 24w07a, 24w09a, 24w10a, 24w11a, 24w12a, 24w13a, 24w14potato, 24w14a, 1.20.5-pre1, 1.20.5-pre2, 1.20.5-pre3, 1.20.5-pre4, 1.20.5-rc1, 1.20.5-rc2, 1.20.5-rc3, 1.20.5, 1.20.6-rc1, 1.20.6, 24w18a, 24w19a, 24w19b, 24w20a, 24w21a, 24w21b, 1.21-pre1, 1.21-pre2, 1.21-pre3, 1.21-pre4, 1.21-rc1, 1.21, 1.21.1-rc1, 1.21.1, 24w33a, 24w34a, 24w35a, 24w36a, 24w37a, 24w38a, 24w39a, 24w40a, 1.21.2-pre1, 1.21.2-pre2, 1.21.2-pre3, 1.21.2-pre4, 1.21.2-pre5, 1.21.2-rc1, 1.21.2-rc2, 1.21.2, 1.21.3, 24w44a, 24w45a, 24w46a, 1.21.4-pre1, 1.21.4-pre2, 1.21.4-pre3, 1.21.4-rc1, 1.21.4-rc2, 1.21.4-rc3, 1.21.4, 25w02a, 25w03a, 25w04a, 25w05a, 25w06a, 25w07a, 25w08a, 25w09a, 25w09b, 25w10a, 1.21.5-pre1, 1.21.5-pre2, 1.21.5-pre3, 1.21.5-rc1, 1.21.5-rc2, 1.21.5, 25w14craftmine, 25w15a, 25w16a, 25w17a, 25w18a, 25w19a, 25w20a, 25w21a, 1.21.6-pre1, 1.21.6-pre2, 1.21.6-pre3, 1.21.6-pre4, 1.21.6-rc1, 1.21.6, 1.21.7-rc1, 1.21.7-rc2, 1.21.7, 1.21.8-rc1, 1.21.8, 25w31a, 25w32a, 25w33a, 25w34a, 25w34b, 25w35a, 25w36a, 25w36b, 25w37a, 1.21.9-pre1, 1.21.9-pre2, 1.21.9-pre3, 1.21.9-pre4, 1.21.9-rc1, 1.21.9, 1.21.10-rc1, 1.21.10, 25w41a, 25w42a, 25w43a, 25w44a, 25w45a, 25w46a, 1.21.11-pre1, 1.21.11-pre2, 1.21.11-pre3, 1.21.11-pre4, 1.21.11-pre5, 1.21.11-rc1, 1.21.11-rc2, 1.21.11-rc3, 1.21.11fabric

July 7, 2024

StackDeobfuscator v1.4.2release

December 5, 2023

StackDeobfuscator v1.4.1release

August 12, 2023

StackDeobfuscator v1.4.0release

July 31, 2023

StackDeobfuscator v1.3.2release

MC 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 23w12a, 23w13a, 23w13a_or_b, 23w14a, 23w16a, 23w17a, 23w18a, 1.20-pre1, 1.20-pre2, 1.20-pre3, 1.20-pre4, 1.20-pre5, 1.20-pre6, 1.20-pre7, 1.20-rc1, 1.20, 1.20.1-rc1, 1.20.1, 23w31a, 23w32afabric

April 14, 2023

How to Install StackDeobfuscator on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "StackDeobfuscator". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.11-rc3, 1.21.11-rc2 (+202 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

StackDeobfuscator server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is StackDeobfuscator compatible with fabric?

StackDeobfuscator officially supports fabric for Minecraft 1.21.11, 1.21.11-rc3, 1.21.11-rc2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with StackDeobfuscator – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if StackDeobfuscator consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.