Free tool
Hreflang Tag Generator
Build copy-paste ready link rel=alternate hreflang tags for your HTML head, includes optional x-default.
Add one row per locale. Include x-default if you serve a fallback URL.
Output
<link rel="alternate" hreflang="en" href="https://example.com/" /> <link rel="alternate" hreflang="de" href="https://example.com/de/" /> <link rel="alternate" hreflang="x-default" href="https://example.com/" />