Polylang keeps everything in standard taxonomy: a custom language taxonomy plus a translation taxonomy that links posts across languages. That design is elegant for portability and awkward for reporting. The default admin tucks language columns into the standard post list one post type at a time, so a multilingual site owner who wants a single coverage chart has to write WP_Query loops by hand.

SleekView Charts walks term, term_taxonomy, and term_relationships against the Polylang taxonomies and exposes language_code, post_type, and translation_group as groupBy columns. From there, building four chart cards is a few clicks, not a custom plugin.

The same dashboard answers stakeholder questions and translator questions: how many pages are linked across all configured languages, which post types are lagging in French, and how translation work has trended since last quarter. Polylang stays in charge of the actual translation linking — SleekView Charts just visualises what is already in the taxonomy.

Polylang's reliance on standard taxonomy is great for portability and frustrating for reporting. The translation relationship sits in a hidden taxonomy that the default wp_list_table never exposes, so anyone running multilingual content at scale ends up writing custom queries, dumping data from phpMyAdmin, or maintaining a parallel spreadsheet. Each of those approaches drifts within weeks.

A charts dashboard reads the same taxonomy in real time and never drifts. A localization manager opens the dashboard and sees that French coverage is at 84%, German at 91%, and Spanish at 62%. The decision about where to spend the next translation week is data-backed in seconds rather than gathered manually.

Polylang still owns the translation linking. SleekView Charts simply visualises it.