Hreflang is one of the most error-prone parts of multilingual SEO — a missing tag, an unreciprocated link, or a mismatched URL can quietly undermine an otherwise well-built multilingual site. Since most WordPress sites rely on their multilingual plugin to generate these tags automatically, the plugin’s hreflang implementation is worth evaluating directly rather than assuming they’re all equivalent.
What Correct Hreflang Actually Requires
- A self-referencing tag on every page, pointing to itself
- Reciprocal tags across every language version — if page A links to page B, page B must link back to page A
- An x-default tag for visitors whose language doesn’t match any version offered
- Tags that match what’s actually live — a stale or orphaned hreflang reference is treated as an error
Weglot: Automatic, Consistently Maintained Hreflang
Weglot generates hreflang tags automatically as you add or update languages, and maintains them without manual intervention as new pages are published. Because translation and hreflang generation happen together in the same automated process, there’s less opportunity for the two to drift out of sync — a common failure mode on sites where translation and SEO tagging are handled by separate manual steps.
WPML: Reliable, With More Manual Configuration Points
WPML also generates hreflang automatically, and its implementation is well-tested across a large install base. Because WPML supports more URL structure variations (subdirectories, subdomains, separate domains), there are more configuration points where a hreflang mismatch can be introduced if those settings aren’t configured consistently — worth double-checking after any change to your language or domain setup.
Polylang: Clean, Predictable Hreflang Output
Polylang’s simpler architecture extends to its hreflang implementation — tags are generated automatically and tend to be straightforward to verify, since the underlying language-to-post relationship is itself simple and predictable. This makes Polylang’s hreflang output comparatively easy to audit if something does go wrong.
TranslatePress: Automatic Tags, Visual Verification
TranslatePress includes automatic hreflang tagging as a core feature. Its front-end translation workflow doesn’t directly expose hreflang tags for editing (since they’re handled behind the scenes), but you can verify correct implementation by inspecting the live page source for each language version after translating.
How to Verify Hreflang Regardless of Plugin
Don’t rely on a plugin’s claims alone — verify directly. Google Search Console’s International Targeting report flags common hreflang errors (missing return tags, unreachable URLs, inconsistent language codes). Third-party crawlers like Screaming Frog can also audit hreflang implementation across your whole site in one pass, which is especially useful after adding a new language or restructuring URLs.
Common Hreflang Errors to Watch For
- Return tag errors — page A links to page B, but B doesn’t link back to A
- Hreflang pointing to a URL that redirects or 404s instead of the live page
- Missing x-default tag, leaving unmatched-language visitors without a clear fallback
- Incorrect language or region codes (en instead of en-us, or similar mismatches)
- Hreflang tags left in place after a page is deleted or unpublished
Hreflang for Regional Variants
If your strategy requires regional variants of the same language (en-us versus en-gb), confirm your plugin supports this more granular tagging specifically — not every setup defaults to this out of the box, and it often requires deliberate configuration rather than simply adding “English” as a single language option.
Hreflang Audit Checklist
- Check Search Console’s International Targeting report regularly, not just at launch
- Run a full-site crawl audit after adding languages or restructuring URLs
- Confirm every hreflang URL resolves directly, without a redirect
- Verify x-default is present and points to a sensible fallback page
- Spot-check reciprocal tags on a sample of pages across different sections of the site
The Verdict for Hreflang
All four major plugins — Weglot, WPML, TranslatePress, and Polylang — handle hreflang generation automatically, which covers the baseline requirement well. The real differentiator is how much manual configuration surface each introduces (WPML’s URL flexibility adds more configuration points to verify) versus how automated and self-maintaining the process stays (Weglot’s tightly coupled translation-and-tagging process). Whichever you choose, verify your hreflang output directly through Search Console rather than assuming it’s correct by default.