This simple mod shows a congratulatory message in the center of your screen whenever you gain a level in World of Warcraft.
Considering the amount of time needed to level up later in the game, I've always found Blizzard's simple chat notification and animation to be a bit underwhelming for my taste. LevelUpGrats is my solution.
/levelupgrats (number) - Shows level up message with number given, for testing purposes
/lug (number) - Same as /levelupgrats
Note: It is not necessary to use parentheses around the level number for the slash commands.
If you want an automatic screenshot taken or guild announce features when you level up, I highly recommend thejoester's excellent Ding Recorder mod for this purpose. It works great in conjunction with LevelUpGrats.
I'd like to add color selection and text modification to LevelUpGrats, but I can't promise anything. If anyone would like to add to it and/or do translations, please upload the patches and I'll incorporate them.
This mod is adapted from PlayerXPBar by Kharthus, with generous help from Cogwheel and Allera.