Save the .jar or .zip file to a known location.
Using hacked clients on public servers or Realms without permission can lead to permanent bans. It is recommended to test these only in single-player or private environments. Client hacks download page
Choose the client version that matches your game version (e.g., 1.21.x). Save the
These downloads are often .jar files that must be placed in your Minecraft mods folder. Client hacks download page
Avoid sites that force you to disable antivirus software before downloading or that require personal information.