How to Find Information on Japanese Websites

You search in English for information about a Japanese company, product, regulation or statistic and find only summaries, old news or nothing at all. That does not necessarily mean the information is not public. Often it is published only in Japanese, under a name you have not searched for, or inside a PDF.

This guide describes practical ways to find information on Japanese websites, including when you do not read Japanese fluently.

Why English searches miss Japanese information

• The page exists only in Japanese, and the English site, if any, is a shorter summary.
• The subject is known by a Japanese name that does not resemble its English name.
• The detail you need is in a PDF, an announcement archive or a table, not on a regular web page.
• English-language coverage summarizes Japanese sources and omits the specific detail.

Step 1: Find the exact Japanese name

Searching with the correct Japanese name is usually the single biggest improvement. Ways to find it:

• Switch the official English website to its Japanese version and note how the name is written.
• Look at the footer, copyright line, or company profile page.
• Check press releases, which normally use the official name.
• For government programs and laws, look for the Japanese title on the responsible ministry’s English page, which often gives it.

Online encyclopedias and translation tools can suggest a name, but treat the result as a lead and confirm it on an official page. Machine translation of a proper name frequently produces a name nobody uses.

Step 2: Allow for spelling variants

Japanese can write the same word in several ways. Search engines handle some variants automatically, but not all. If a search returns little, try the alternatives:

Years are another source of variation. Japanese documents may write a year in the Western calendar or with a Japanese era name, so a report for fiscal 2024 might be titled with 2024年度 or 令和6年度.

Step 3: Combine the name with Japanese keywords

Adding a Japanese word for the kind of information you want narrows results to the right pages:

Japanese text has no spaces between words, but you can still separate search terms with spaces. For example, サンプル株式会社 料金 searches for pages containing both the company name and the word for price.

Step 4: Use search operators

A few operators supported by major search engines are particularly useful for Japanese websites. Search engines treat them as instructions, but results may still include near matches.

Exact phrases

Put a name or phrase in double quotes to search for that exact sequence of characters. This helps with short or common names. It also means that a variant spelling will not match, so try each variant separately.

Searching a single site or domain

site: restricts results to one website or domain. It is often more effective than a site’s own search box.

Japanese domain types can help target the right kind of source:

Many Japanese companies and organizations also use .com, .jp or other domains, so a domain filter narrows the search but can also exclude relevant pages.

Searching for PDFs

filetype:pdf limits results to PDF files. Much Japanese government, association and corporate material is published as PDF.

Step 5: Look inside the site, not just the search results

Pages on official sites do not always appear in search results. When you know which organization holds the information:

• Use the site’s own search function, if it has one, with Japanese terms.
• Check the sitemap (サイトマップ), usually linked in the footer.
• Browse announcement archives, which Japanese sites often organize by year.
• Look for a documents or publications section (資料, 刊行物, 公表資料).

Step 6: Check PDFs carefully

When you find a PDF, check its date, its version, and whether a newer edition exists. Some PDFs are scanned images rather than text, so their contents do not appear in search results and cannot be copied; you may need to read them directly.

Step 7: Deal with moved or deleted pages

Japanese websites are redesigned like any others, and old URLs often stop working. If a link is broken:

• Search for the page title in quotes; the page may have moved to a new URL.
• Search the organization’s site for the document name.
• Check whether a web archive such as the Internet Archive’s Wayback Machine holds a copy. Not every page is archived, and an archived copy shows the page as it was on the capture date, not as it is now.

If you use an archived copy, record the capture date and state that the page is no longer available at its original address.

Using translation tools

Browser translation makes Japanese pages readable, and it is a reasonable way to scan results. For anything you will rely on, check names, figures, units and dates in the original Japanese. Units such as 万 (10,000) and 億 (100 million) and negations in long sentences are common points where translation goes wrong.

Not found is not the same as does not exist

A search that returns nothing does not prove the information does not exist. It may be unpublished, behind a login, available only on paper, or published under a name you have not tried. Equally, searching longer does not guarantee a result.

Decide in advance how far to search, and record what you did: the terms and variants you used, the sites you checked, and the date. That lets you state clearly that something was “not found in the sources checked”, and lets someone else continue from where you stopped.

Once you have found a page, the next question is whether it is the original source of the information; see Japanese Primary Sources: How to Trace Information to Its Origin. If you are researching a specific company, see How to Research a Japanese Company Online.

If the information is still hard to find

Finding Japanese information is rarely a single search. It means confirming names, trying variants, searching specific sites and PDFs, checking archived pages, and recording what was and was not found. The more items you need, the longer this takes.

optimal plan SEARCH’s Japan Research Service researches Japanese-language websites and public sources on your behalf, verifies the findings, and delivers them as an English report with source links wherever possible. Anything we could not confirm is reported as not confirmed, rather than filled in with guesses.

You can describe your question in English. You don’t need to know the Japanese search terms or where to look.