WPML and Polylang are two of the best-known multilingual plugins for WordPress. Both can help a site publish content in multiple languages, but they differ in workflow, pricing, ecosystem, and how much structure they bring to the project. The right choice depends on the site, team, and translation process.
Choose based on workflow first
If a site has translators, client review, ecommerce, custom fields, and structured translation management, WPML is often attractive because it offers a broad commercial ecosystem and many integrations. If a site wants a lighter editorial workflow and more direct control inside WordPress, Polylang may feel simpler.
Content model
Both plugins connect translated versions of posts, pages, taxonomies, and menus. The practical difference is how the editorial team experiences that connection. Before choosing, create a staging copy and translate a real page, a menu, an archive label, SEO metadata, and a custom field section. The demo tells you more than a feature checklist.
Performance and cache
Multilingual sites need cache rules that vary by language. The URL structure, language cookie, hreflang output, and CDN behavior all matter. A cache layer should not serve the English page to a visitor requesting another language. Test logged-out requests in each language and verify that the cache key changes appropriately.
Cost and support
WPML is commercial. Polylang has a free version and paid options. Price should matter, but support and fit matter more. A multilingual migration is expensive to redo later, so choose the plugin your team can maintain for years.
Bottom line
Choose WPML when you need a mature paid ecosystem, complex translation management, and broad integration coverage. Choose Polylang when you want a leaner approach and the workflow fits your team. In both cases, test cache behavior, SEO output, and editorial process before committing.