Hreflang Tag Generator
Make hreflang tags for every language and country version of a page — HTML link tags, an HTTP Link header or sitemap entries — with code checks and an x-default.
No plain "ko" version: ko speakers outside ko-KR are matched to x-default. Consider adding ko | URL for them.
Put the same block in the <head> of every version listed — each page must list itself and all the others, or Google may ignore the annotations.
| hreflang | Language — country | URL |
|---|---|---|
| en-US | English — United States | https://example.com/en-us/ |
| en-GB | English — United Kingdom | https://example.com/en-gb/ |
| en | English | https://example.com/en/ |
| ko-KR | Korean — South Korea | https://example.com/ko/ |
| ja | Japanese | https://example.com/ja/ |
| x-default | everyone else | https://example.com/ |
Hreflang annotations tell Google which page to show to speakers of which language and country, so a visitor in the UK sees your en-GB page and a visitor in Korea the ko-KR one. This generator writes the full set for every version of a page — HTML link tags, an HTTP Link header for PDFs and other files, or XML sitemap entries — and checks the codes as it goes. It catches the usual mistakes: en-UK instead of en-GB, jp instead of ja, country codes on their own, EU or 419, relative URLs, the same code used twice, and a missing x-default.
How to use this tool
- List each version on its own line as code | URL, for example en-GB | https://example.com/uk/.
- Add an x-default URL for everyone else, such as a language picker.
- Choose the output: HTML tags, HTTP header or sitemap entries.
- Copy the result into every version of the page (the same block each time), or into your sitemap.
Formula
<link rel="alternate" hreflang="language[-Script][-REGION]" href="absolute URL" /> — one per version, plus hreflang="x-default"
The language is an ISO 639-1 code (en, ko, ja), the optional script an ISO 15924 code (Hans, Hant, Latn) and the optional region an ISO 3166-1 alpha-2 country code (US, GB, KR). The region never stands alone: "be" means Belarusian, not Belgium. Case does not matter to Google. Codes and names are checked against your browser's built-in locale data (Intl.DisplayNames), so no code list is sent with this page.
Example
For en-US at https://example.com/en/, ko-KR at https://example.com/ko/ and an x-default of https://example.com/, the generator writes three tags, e.g. <link rel="alternate" hreflang="en-US" href="https://example.com/en/" />. Typing en-uk stops with an error and suggests en-GB, because UK is not the ISO code for the United Kingdom — Google ignores it.
Frequently asked questions
Does every page need all the tags?
Yes. Each version must list itself and every other version. If page A points to page B but B does not point back, Google may ignore the pair. Paste the same block on every version.
Should I use HTML tags, the HTTP header or the sitemap?
Google treats them the same; pick one. HTML tags are simplest for pages, the HTTP header is the only option for PDFs and other non-HTML files, and the sitemap is easiest for large sites with many versions.
Is x-default required?
No, but it is recommended. It names the page for visitors whose language or country is not listed — typically a language selector or your international homepage.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/hreflang-tag-generator/
Cite or embed this tool
kakaoCalc. (2026, November 8). Hreflang Tag Generator. https://kakao.mobile/tools/hreflang-tag-generator/
“Hreflang Tag Generator.” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/hreflang-tag-generator/.
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