PacketDebug
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthPacketDebug — A lightweight in-game network traffic analyzer for Minecraft.
Press F6 to open a real-time GUI showing packet traffic statistics for the last 30 seconds. Packets are sorted by KiB/s and separated into S2C (Server → Client) and C2S (Client → Server) views, making it easy to identify which packet types consume the most bandwidth.
Perfect for debugging high-traffic issues, optimizing mod configurations, or just satisfying your curiosity about Minecraft's network protocol.
PacketDebug — 轻量级的 Minecraft 网络流量分析工具。
按 F6 打开实时 GUI，显示过去 30 秒内各数据包类型的流量统计。按 KiB/s 从大到小排序，分为 S2C（服务端→客户端） 和 C2S（客户端→服务端） 两栏显示，一目了然找出哪些数据包最占带宽。
适合排查高流量问题、优化模组配置，或单纯满足对 Minecraft 网络协议的好奇心。
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.6
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as PacketDebug-1.0.jar — drop this file into the mods folder
- Download size: 1.5 MB
- Download link checked 3 Oct 2026 — working
These come from our own check of the pack file, not from the source page.