Polylang Pro's design choice is to keep language and translation relationships in standard WordPress taxonomy, which is portable and clean and almost invisible in the default admin. The standard post list shows one language column at a time, filters reset between visits, and coverage data lives across terms, term_taxonomy, term_relationships, and the hidden translation taxonomy. Teams that run real multilingual programs end up writing their own queries or maintaining a parallel spreadsheet.

SleekView Charts walks the taxonomy joins for every post, page, and term and renders the result as a dashboard. A Number card shows overall coverage percent. A Pie splits the catalog into linked, missing, draft, and stale. A Bar ranks coverage per language. An Area trends coverage week over week so a launch sprint has measurable progress.

The plugin still owns language switching, hreflang, and the actual translation editor including the Pro string-translation feature. SleekView Charts owns the reporting layer that the taxonomy alone never exposed.

Polylang Pro's reliance on standard WordPress taxonomy is a strength for portability and a headache for reporting. The translation relationship sits in a hidden taxonomy that the standard list table never exposes, so anyone running multilingual content at scale ends up writing custom WP_Query loops, dumping CSVs from phpMyAdmin, or maintaining a parallel spreadsheet. Each of those approaches drifts within weeks.

Reading the taxonomy directly and rendering it as a dashboard closes that loop. A KPI of overall coverage anchors planning. A donut of linked, missing, draft, and stale rows surfaces where work actually sits.

A per-language bar exposes the lagging target before customers do. A stacked bar by post type tells the team where the next sprint should land. Polylang Pro keeps doing the linking; the operational layer is the part SleekView Charts adds.