Do you have or are you planning to launch a website in Japanese? If you already have a website, did you make sure it’s optimized for search in Japan? If you’re planning to launch a website in Japanese, did you do all the preparations to make sure it’s optimized for the search engines in Japan before launch?

In this post I will tell you all about how to do Japanese SEO in 2021, guide you through the potential obstacles and what to think about.

The importance of SEO

There’s no arguing that organic traffic is one of the most important and valuable traffic sources for your website. On our own Japanese website, more than 50% of traffic comes from organic searches.

It’s almost always worth investing in SEO as the payoff is usually huge in the long-term compared to other channels.

GA Traffic

Search Engines in Japan

There are two search engines you need to pay attention to in Japan for SEO, one of them is our usual player – Google, and the other one is our not so usual – Yahoo! Japan.

Estimated market share:

Google: 55%

Yahoo! Japan: 40%

Yahoo! Japan used to have the largest market share in Japan up until a few years ago when Google took the 1st place.

Generally, the slightly older audience and B2C consumers uses Yahoo! Japan the most, whilst Google catches the attention of the more tech-savvy and B2B audiences. But we still see a good portion of B2B on Yahoo! Japan and B2C on Google.

Japanese Google can be found at and Yahoo! Japan can be found at

The Design

While Japanese Google looks like Google anywhere else, Yahoo! Japan is quite a different beast, with its early 2000’s and information-dense design that a large percentage of the Japanese population prefers compared to the clean and white-space filled designs we are used to in the West. on desktop on mobile


Since 2010, Yahoo! Japan has been using Google’s algorithm to rank all organic searches on their engine. This means that it’s not entirely necessary to track both Google and Yahoo! Japan as the ranks will be almost exactly the same.

The times when we’ll see a difference is when either Google or Yahoo! Japan displays search engine specific features on their search engine landing pages, like Google Instant Answer, Featured Snippets, Local Packs, News Boxes, etc.

Japanese Keyword Research

Another barrier to doing Japanese SEO, is the keyword research process. Japan has three different written systems – Hiragana (ひらがな), Katakana (カタカナ) and Kanji (漢字) not including Romaji, which basically is the alphabet letters we are used to.

So there are many different ways you can write the same word in Japanese using the different written systems.

For example the word “Ryokan”, which is a traditional Japanese inn and can look as displayed in the image below,

can be written in hiragana as りょかん, in katakana as リョカン, in kanji as 旅館 and in romaji as ryokan.

Japanese would most likely know that the most common way to write “Ryokan” would be using the kanji form 旅館.

And as is evident by pulling historical metrics from AdWords’s Keyword Planner, we can clearly see that 旅館 is the most searched variation historically. (We can’t view the search volumes for hiragana and katakana versions as Google aggregated them in 旅館)

Keyword Avg. monthly searches
Ryokan 4,400
旅館 110,000

Japanese On-Page Optimizations

 When it comes to on-page optimizations such as titles, meta descriptions, headers, body copy, image alts and internal links, there’s basically no difference from how we would approach it for any other country.

The only thing we need to keep in mind is the fact that Japanese characters are double-byte and this can affect the optimal length for titles and meta descriptions.

Thus, the safest (and proper) way to make sure you’re staying within the limits is to measure the title and meta description lengths by pixels. I’m not going to put the maximum amount of pixels in here as Google frequently changes this. But you can usually find the latest recommended length through a quick Google (or Yahoo! Japan) search.

Japanese country top level domains

There are two different Japanese top-level domains you should consider when hosting a website in Japanese – and .jp. is reserved exclusively for companies registered in Japan, a tells the world your business is legitimate and can be trusted. Non-Japanese businesses registered as Gaikoku Kashia (Foreign Company) are also eligible for domains.

.jp is also a good domain to get and we have seen an increase in companies registering .jp domains.

But if you’re already a global company with a good amount of high quality backlinks and traffic leading to your .com domain, I would recommend you keep it that way and just create a separate subfolder for Japan, so This way you can keep benefitting from all that precious link juice.

URLs in letters or Japanese characters

There’s been much discussion in the SEO community, whether or not to use Japanese characters in domain names and URLs. An example below:

Using letters:

Using Japanese characters:サービス

Now, either way works. But in most cases we recommend to take the letter approach “/services”, mainly due to encoding issues when copying and sharing URLs containing Japanese characters.

If I copy the linkサービス and paste it in a chat or document, it will often turn into this: Not easy on your eyes is it?

In conclusion, what you should think about when doing Japanese SEO

  • Track keyword rankings for both Google and Yahoo! Japan
  • Keep the three different writing systems (kanji, katakana & hiragana) in mind when doing keyword research and on-page optimizations
  • Keep in mind that Japanese characters are double-byte in length
  • If not already owning a strong .com domain, consider investing in a domain
  • Stay clear of using Japanese characters in domain names and URLs for now

Do you need assistance with your SEO in Japan? Contact us today to receive a free personalized proposal and quote.

Featured image by Ana Rodriguez

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