PGO-XXL-DB is a comprehensive online database and toolkit for Pokémon GO trainers, bringing game data, analysis, and planning features together in one place. Its Pokédex provides Pokémon stats, types, moves, evolutions, and CP information, while Megadex and Movedex cover Mega Evolutions, Primal Reversions, move performance, and related comparisons. For competitive play, trainers can explore PvP individual-value rankings, Great Battle League (GBL) meta trends, tournament data, team checks, and battle matchup support.

The platform also offers practical tools for checking Pokémon values and Showcase scores, finding counters to raids and Team GO Rocket opponents, and planning raid teams, player requirements, and Mega bonuses. Event information, news archives, and encounter trends help users follow current and upcoming in-game activities. Trainers can save up to five favorites in their browser for quick access; the site says these settings are stored locally and do not require registration. PGO-XXL-DB organizes its features into searchable tool hubs and provides a multilingual interface, making its reference material and planning utilities accessible to a broad Pokémon GO community.