Title: Transer 多言語ページ翻訳
Author: hippogo50
Published: <strong>14, Agostu de 2026</strong>
Last modified: 18, Agostu de 2026

---

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# Transer 多言語ページ翻訳

 By [hippogo50](https://profiles.wordpress.org/hippogo50/)

[Download](https://downloads.wordpress.org/plugin/transer-translate.0.8.1.zip)

 * [Details](https://ast.wordpress.org/plugins/transer-translate/#description)
 * [Reviews](https://ast.wordpress.org/plugins/transer-translate/#reviews)
 *  [Installation](https://ast.wordpress.org/plugins/transer-translate/#installation)
 * [Development](https://ast.wordpress.org/plugins/transer-translate/#developers)

 [Support](https://wordpress.org/support/plugin/transer-translate/)

## Description

Transer 多言語ページ翻訳 connects your WordPress site to the [transer.io](https://www.transer.io/)
server-side translation API. It is designed specifically for sites whose original
content is written in Japanese.

#### Why a Japanese-first engine matters

General-purpose translation tools treat Japanese as one language among many. Japanese
source text has structural habits that break those tools, and the engine behind 
this plugin is built around them:

 * **Japanese-era dates**: Reiwa, Heisei and Showa dates are resolved to the correct
   Gregorian year rather than being transliterated or dropped.
 * **Kana-heavy sentences**: Text written largely in hiragana is ambiguous to morphological
   analysis. The engine disambiguates word boundaries instead of guessing at them.
 * **Decorative markup**: Japanese sites often split words across `<span>` tags 
   for styling. The engine reads through that markup so a single word is not translated
   as several fragments.

The full HTML of the page is sent as-is, so context is preserved across the whole
document rather than being lost sentence by sentence. The translated page is then
rendered server-side, and multilingual SEO tags such as `hreflang` and `canonical`
are generated automatically.

#### Editing after translation

Machine translation always leaves something you want to change. With this plugin,
you fix it on the translated page itself. There is no admin screen to open and no
page to hunt for: click the wording that looks wrong, and that is what you edit.

 * **Direct editing**: Click any text to open a panel showing the Japanese source
   above and the translation below. Rewrite the translation and save. Clearing the
   field restores the AI translation on the next load.
 * **Glossary**: Register a term once and that wording is used from then on. Manually
   registered terms always take priority over the AI’s choice.
 * **Do not translate**: Mark headings, taglines or legal wording that should stay
   in the original Japanese, whichever language the page is viewed in.
 * **Image replacement**: Swap banners and other images that have text baked into
   them for a different image per language.

Free accounts include up to 100 direct edits and 50 glossary terms. “Do not translate”
and the language-switcher styling have no limit. Image replacement is available 
on paid plans.

#### Key features

 * **Server-side translation**: The page is translated before it reaches the browser,
   so search engines and visitors receive the same finished HTML.
 * **Automatic multilingual SEO tags**: `canonical` and `hreflang` tags are inserted
   automatically for every contracted language.
 * **Automatic language-switcher UI**: No shortcode placement required. The language
   switcher is automatically shown on both the original and translated pages.
 * **Translated site search**: When a visitor searches in their own language, the
   keyword is translated into your site’s original language before the search runs,
   so Japanese content is actually found. Nothing to configure.
 * **Multilingual sitemap**: Visiting `/transer-sitemap.xml` dynamically generates
   a sitemap with per-language `hreflang` annotations.
 * **Editing on the translated page**: Rewrite wording, register glossary terms 
   and exclude text from translation without leaving the page. See above for details.
 * **No server configuration required**: No `.htaccess` rewriting or web-server 
   rewrite rules are needed. The plugin detects language-prefixed URLs (e.g. `/en/
   about`) during WordPress’s `init` hook.

#### A transer.io account and API key are required

Using this plugin requires a free account and API key from [transer.io](https://www.transer.io/).
The first language is free of charge.

### External services

This plugin connects to transer.io, a third-party server-side translation API operated
by Hippotech USA Inc. (the same company that develops this plugin), in order to 
translate your page content into the languages you configure.

 * **What is sent, and when**: When a visitor requests a page in a language other
   than your site’s original language, the plugin captures the full HTML output 
   of that page (via an output buffer) and sends it, together with the requesting
   hostname, URL path, source language code, and your configured list of contracted
   languages, to the transer.io translation endpoint (`{configured base_url, default
   https://api.transer.io}/translate-page`). No request is sent when a page is viewed
   in the original language.
 * **Retrieving your contracted languages**: When you save the plugin settings, 
   the plugin sends your hostname and API key to `{configured base_url}/contract-
   langs` to retrieve the list of languages contracted on your transer.io account.
   This request is made only from the settings screen, never from a visitor’s page
   view.
 * **Translating search keywords**: When a visitor performs a site search on a translated
   page, the plugin sends the entered keyword, your hostname, and the language codes
   to `{configured base_url}/search-translate` so the keyword can be translated 
   into your site’s original language before the search runs. Only the keyword itself
   is sent.
 * **Authentication**: Requests are authenticated using an API key that you obtain
   yourself from your transer.io account and enter on the plugin’s settings screen.
   No API key is hard-coded in the plugin.
 * **On request failure**: If the request to transer.io fails for any reason, the
   plugin falls back to displaying the original, untranslated page; it never blocks
   page rendering.
 * **Data disclosure**: The HTML sent to transer.io reflects the page as rendered
   by WordPress; it does not include values a visitor may have entered into forms
   on the page.

Terms of Service: https://www.transer.io/terms.html
 Privacy Policy: https://www.
transer.io/privacy.html

## Screenshots

[⌊Settings screen (API key; contracted languages are retrieved automatically)⌉⌊Settings
screen (API key; contracted languages are retrieved automatically)⌉[

Settings screen (API key; contracted languages are retrieved automatically)

## Installation

 1. Upload the plugin files to `/wp-content/plugins/transer-translate`, or install 
    it via the “Plugins” > “Add New” screen in your WordPress admin.
 2. Activate the plugin from the “Plugins” screen.
 3. Go to “Settings” > “Transer 多言語ページ翻訳”, enter the API key obtained from 
    [transer.io](https://www.transer.io/), and save. Your contracted languages are 
    retrieved automatically from your transer.io account.

## FAQ

### Where does the actual translation happen?

All translation processing happens on transer.io’s servers (the translate.service
API). This plugin sends the HTML generated by WordPress to that service and outputs
the translated HTML it receives; it does not perform translation itself.

### Do I need to configure server-side rewrite rules?

No. The plugin detects the language prefix in the URL early during WordPress’s `
init` hook, so no `.htaccess` or web-server rewrite configuration is required.

### Is it free to use?

The first language is free (with a monthly traffic limit). See [transer.io](https://www.transer.io/)
for details.

### Can I fix the translation myself on a free account?

Yes. Direct editing, glossary registration and the “do not translate” setting are
all available on free accounts, with a limit of 100 direct edits and 50 glossary
terms. Editing happens on the translated page itself, so no admin screen is involved.
Image replacement requires a paid plan.

### Which languages are supported?

More than 120 languages are supported, including English, Simplified Chinese, Traditional
Chinese, Korean, Spanish, French and Portuguese. For 16 of these, the translation
engine has been tuned further and is offered as a recommended language set.

### Does site search work in other languages?

Yes. When a visitor on a translated page types a keyword in their own language, 
the plugin translates it into your site’s original language before the search is
executed, so your existing content is found. Without this, a search on a translated
page would always return nothing, because the content and the database are in the
original language. No configuration or theme modification is required.

### What kinds of websites is this suited for?

It is built for sites whose original content is written in Japanese and that need
to reach readers in other languages. Typical examples include municipal and tourism
websites serving inbound visitors, cross-border e-commerce stores selling overseas,
and corporate websites that publish news and IR material for a global audience.

### Does it handle specialist terminology?

The translation engine is tuned for a range of professional fields, including medicine,
law, chemistry, education, finance and accounting, real estate, manufacturing and
machinery, IT and software development. Technical terms and proper nouns can also
be managed centrally on transer.io, so that they are rendered consistently across
every page of your site.

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“Transer 多言語ページ翻訳” is open source software. The following people have contributed
to this plugin.

Contributors

 *   [ hippogo50 ](https://profiles.wordpress.org/hippogo50/)

[Translate “Transer 多言語ページ翻訳” into your language.](https://translate.wordpress.org/projects/wp-plugins/transer-translate)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/transer-translate/),
check out the [SVN repository](https://plugins.svn.wordpress.org/transer-translate/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/transer-translate/)
by [RSS](https://plugins.trac.wordpress.org/log/transer-translate/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 0.8.1

 * Site search on translated pages now works. Keywords entered in the visitor’s 
   language are translated into your site’s original language before the search 
   runs.
 * No configuration or theme modification is required.

#### 0.8.0

 * Contracted languages are no longer entered by hand. They are retrieved from your
   transer.io account when you save the settings.
 * Contracted languages are now shown with their flag and native name on the settings
   screen.
 * Prevents a failure mode where a single mistyped language code silently disabled
   both the language switcher and translation.
 * After updating, open the settings screen and press “Save Changes” once.

#### 0.7.4

 * Added support for the multilingual sitemap (`/transer-sitemap.xml`).

#### 0.7.1

 * Fixed an issue with saving contracted languages.

#### 0.6.0

 * Removed `.htaccess` writing; language detection now happens entirely within the`
   init` hook.

## Meta

 *  Version **0.8.1**
 *  Last updated **3 hores ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 5.8 or higher **
 *  Tested up to **7.0.4**
 *  PHP version ** 7.4 or higher **
 *  Language
 * [English (US)](https://wordpress.org/plugins/transer-translate/)
 * Tags
 * [hreflang](https://ast.wordpress.org/plugins/tags/hreflang/)[Japanese](https://ast.wordpress.org/plugins/tags/japanese/)
   [multilingual](https://ast.wordpress.org/plugins/tags/multilingual/)[seo](https://ast.wordpress.org/plugins/tags/seo/)
   [translation](https://ast.wordpress.org/plugins/tags/translation/)
 *  [Advanced View](https://ast.wordpress.org/plugins/transer-translate/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/transer-translate/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/transer-translate/reviews/)

## Contributors

 *   [ hippogo50 ](https://profiles.wordpress.org/hippogo50/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/transer-translate/)