Polylang vs WPML: Which WordPress Translation Plugin Wins?

Polylang and WPML are two of the most popular Wordpress multilingual plugins. Both plugins work by duplicating posts and pages into separate language versions. Polylang is free at its core, with a paid Pro tier add-on and is praised for its user-friendly interface. WPML is paid throughout, but has a more comprehensive interface with automatic translation credits and hreflang built right into its settings. Both Polylang and WPM work by duplicating posts for every translation. As a result, your database will grow exponentially with each new language and translation added to your site. So how do you decide which plugin will continue to serve you as your site and business grow?

A head-to-head comparison between Polylang and WPML should include pricing, translation workflow, SEO handling, page builder compatibility, and support. You’ll also want to know what both plugins cost you structurally, in database rows and query time, as content and languages continue to increase.

“Which one should I pick?”

Pick Polylang if you're running a smaller site, you're comfortable with some manual setup, and you'd rather not pay for a base multilingual plugin. Pick WPML if you want automatic translation built in, more polished string-translation tooling, and you're willing to pay an annual license. Both work well, but neither is maintenance-free once your site is live.

Polylang's free core plugin handles unlimited languages, but you'll need Polylang Pro (paid) for things like translating custom post type slugs and some advanced SEO controls. WPML, however, doesn't have a free tier. Every site running it needs a license, and the tier you pick determines how many sites you can cover and whether e-commerce translation is included. Either way, it helps to understand your real translation cost per word before weighing plugin license fees against a managed alternative.

Polylang vs WPML head-to-head

WPML's automatic translation has its own Advanced Translation Editor that uses DeepL, Google, or Microsoft and is metered by credits rather than a separate plugin subscription. If you want machine translation on top of Polylang’s free core, you’ll pair Polylang with the Lingotek plugin. Lingotek gives you up to 20,000 words of free automatic translation before you start paying, and costs roughly $500 a year once you’re translating around 60,000 words. The real tradeoff is Polylang’s free core stays free until you add machine translation with a third-party plugin, whereas WPML folds that cost into its annual license from the start.

Limitations to both

Both plugins, regardless of whether you’re using Polylang’s free tier or WPML’s top plan, share the duplicate-post model, which turns every translation into its own separate WordPress post that is tied to the original by a language flag and a translation group ID.

That model works fine until your site grows. With this model, a site with 500 posts translated into 5 languages ends up with 2,500 rows in wp_posts, plus matching postmeta, term relationships, and revisions for each row, according to SimplePOTranslate's 2026 plugin comparison. As a result, every archive query has to filter by language, and sites with more than roughly 10,000 translated posts will experience real website slowdowns. Unfortunately, neither plugin has a workaround. As you add more languages to your site, you will have more to store, migrate, and query.

A few recurring complaints, on top of the structural cost, are plugins or theme updates breaking multilingual layouts, including menus reverting to a single language and translated slugs disappearing. Hardcoded text can slip through untranslated. Meanwhile, multilingual SEO plumbing, canonical tags, sitemap generation, and the hreflang x-default case specifically need manual attention on top of what either plugin auto-generates. Building a multilingual navigation menu is also a manual job with both plugins. You need to create a separate menu per language under Appearance > Menus and let the plugin's language switcher decide which one a given visitor sees.

The overlay alternative

Bablic works differently. Instead of duplicating your WordPress posts into separate language versions, you can either drop in one JavaScript snippet or install our WordPress plugin, and your site is translated in minutes with no duplicate posts or build-pipeline changes. You only need to create a free account, and you're up and running. Every new account starts a 30-day trial, no credit card required.

Hreflang tags are generated automatically as part of the setup. You can serve translated versions on subdomains (de.example.com) or country-code domains (example.de), depending on how you want your multilingual SEO structured. If your strategy depends on distinguishable target-language URLs and not a single domain juggling query parameters, then it’s important to have flexibility.

Bablic's in-context Visual Editor also allows you to open a translated page and edit the translation directly on the live rendering (the page exactly as a visitor sees it), and a team member can spot-check it without touching code or hunting through a separate strings screen. If you pair that with a glossary that locks brand names and specific phrases to exact wording, then you get a workflow built for teams who care how their voice sounds in another language as much as whether the words are technically correct. You can see how it works in practice.

The right choice comes down to how big you expect your site to get and how much upkeep you're willing to take on. If duplicate posts and manual fixes sound like a cost you'd rather avoid, then Bablic is a great alternative to explore.

FAQ

Does Polylang automatically translate content?

No. Polylang's free core plugin structures your multilingual setup, duplicate posts, language switcher, hreflang tags, but expects you to supply each translation yourself or connect a machine translation service. Automatic translation isn't part of the free core.

What are WPML's biggest flaws?

Community threads most often point to update-related breakage (theme or plugin updates disrupting multilingual layouts), the ongoing cost of a paid license, and the same database bloat every duplicate-post plugin carries as translated content scales.

Which plugin is better for a multilingual WordPress site: Polylang or WPML?

It depends on budget and workflow. Polylang is free at its core and works well for smaller sites willing to do manual setup. WPML costs more but includes built-in automatic translation and more thorough string translation tooling out of the box.

How do I build a multilingual navigation menu in WordPress?

Both plugins require a separate menu per language, created under Appearance > Menus, with each menu assigned to its corresponding language. The plugin's language switcher then decides which menu displays to which visitor.

What's a good WordPress plugin to translate posts and pages into any language?

Polylang and WPML both work, with different tradeoffs on price and automation. An overlay tool like Bablic is worth comparing if you'd rather avoid the duplicate-post database growth that both plugins share as your content and language count increase.