
Legit Elytra Swap
Legit Elytra Swap is a client-side utility mod that automates the hotkey-less swapping between chestplates and elytras in a "legit" and visually consistent manner.
Screenshots

About this Mod
✨ Features
Strict Double Jump Detection: The mod activates only when you press the jump key a second time while in mid-air (Double Jump). The logic has been refined to prevent accidental activations when jumping from the ground.
Smart Elytra Swap: Upon detecting a double jump, the mod automatically searches for an Elytra in your hotbar (slots 1-9) and equips it instantly.
Automatic Landing Detection: When you touch the ground, the mod detects the transition and automatically re-equips the best chestplate available in your hotbar.
Intelligent Chestplate Prioritization: Includes a smart scoring system that prioritizes materials (Netherite > Diamond > Iron...), durability, and enchantments to ensure you always equip the strongest available protection.
Full Visibility (No Silent Swap): Unlike other utility mods, this one performs a visible swap:
Physically changes the hotbar slot.
Triggers a hand swing animation (swingHand).
Holds the item in hand before restoring the original slot, ensuring both you and others on a server see the equipment change.Total Control: Includes a toggle key (Default: K) to quickly enable or disable the mod, with notifications.
⚙️ Technical Details
Version: Minecraft 1.21.8 (Compatible with Fabric 0.18.4).
Optimization: Uses Fabric Access Wideners to interact directly with the player inventory efficiently, removing the need for reflection and improving stability.
Architecture: Client-side only.
⚠️ Disclaimer
IMPORTANT: Using this mod on multiplayer servers is at your own risk.
This mod automates inventory actions and sends network packets (UpdateSelectedSlotC2SPacket) to the server.
Some anti-cheat systems may interpret these rapid actions as an unfair advantage or automated behavior ("Macros").
The author and developers are NOT responsible for any bans, penalties, or kicks you may receive on any Minecraft server for using this mod.
Always consult server rules before using utility mods.
🐛 Bug reports & suggestions
Send me dm discord:
marcellesa
Available Versions
How to Install Legit Elytra Swap 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 "Legit Elytra Swap". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.8 (+2 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Legit Elytra Swap 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 Legit Elytra Swap compatible with fabric?
Legit Elytra Swap officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Legit Elytra Swap – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Legit Elytra Swap 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.
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Rent Modded Server
Install Legit Elytra Swap with just one click on your server.