Title: Robse Auto Alpha Slug
Author: robsejp
Published: <strong>September 16, 2026</strong>
Last modified: September 16, 2026

---

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# Robse Auto Alpha Slug

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

[Download](https://downloads.wordpress.org/plugin/robse-auto-alpha-slug.2.0.0.zip)

 * [Details](https://wordpress.org/plugins/robse-auto-alpha-slug/#description)
 * [Reviews](https://wordpress.org/plugins/robse-auto-alpha-slug/#reviews)
 *  [Installation](https://wordpress.org/plugins/robse-auto-alpha-slug/#installation)
 * [Development](https://wordpress.org/plugins/robse-auto-alpha-slug/#developers)

 [Support](https://wordpress.org/support/plugin/robse-auto-alpha-slug/)

## Description

Publish a post titled お知らせ in WordPress and the permalink becomes
 /%e3%81%8a%
e7%9f%a5%e3%82%89%e3%81%9b/. It works, but it is unreadable in a browser bar, it
breaks when pasted into chat, and it is useless in a report. The usual fix is to
type an English slug by hand for every single post, and the usual result is that
somebody forgets.

Robse Auto Alpha Slug fills the slug in for you when you save. Kana are romanized,
so
 おしらせ becomes `oshirase` and デイサービス becomes `deisabisu`. A slug you
typed yourself in plain ASCII is always left alone.

#### Kanji are handled honestly

This is where other plugins quietly go wrong. PHP has no reliable way to read
 kanji:
the ICU transliterator that most plugins call reads them **as Chinese**, so 村松
comes out as `cun-song` and 出雲そば as `chu-yunsoba`. That is not a slug anybody
wants, and it is worse than no slug at all because it looks deliberate.

So this plugin does not guess. When a title contains kanji it cannot resolve,
 it
uses a predictable pattern instead — `post-123` by default — and leaves the guessing
to you:

 * **Fallback (default).** A clean, predictable slug such as `post-123`.
 * **Drop the kanji.** Build the slug from the kana and Latin text that remain.
 * **Transliterate.** The ICU behaviour described above. Correct for Chinese
    sites,
   wrong for Japanese ones, and labelled as such in the settings.

#### A dictionary for the words you actually use

Company names, place names and people’s names come up again and again on one
 site.
Teach them once:

    ```
    出雲 = izumo
    美食旅 = gourmet-trip
    村松英俊 = muramatsu-hidetoshi
    ```

Now 出雲そば 美食旅 becomes `izumo-soba-gourmet-trip` instead of falling back.
 
Longer terms win over shorter ones, so 出雲市 can differ from 出雲.

#### No intl extension required

The kana table is built into the plugin, so romanization works the same on a
 server
without the intl extension. Sokuon and youon are handled: まっちゃ becomes `matcha`,
ぎゅうにゅう becomes `gyuunyuu`.

#### Everything else

 * Choose which post types are handled, or let the plugin detect them.
 * Cap the slug length, cut on a word boundary.
 * Try a title on the settings screen and see the slug before you publish
    anything.
 * Decide whether percent-encoded slugs are replaced or left as they are.

## Installation

 1. Install and activate the plugin.
 2. That is enough for kana titles. Nothing else is required.
 3. To change how kanji are handled, or to add dictionary entries, go to
     **Settings
    Robse Auto Alpha Slug**.

Existing posts are never touched. Only posts you save after activating get a
 generated
slug, so your current permalinks and their search rankings stay as they are.

## FAQ

### Will it overwrite a slug I typed myself?

No. A slug written in ASCII letters, digits, hyphens or underscores is treated
 
as deliberate and kept, whatever the title says.

### Will it change the slugs of my existing posts?

Not on its own. Slugs are only generated when a post is saved. If you open an
 old
post with a percent-encoded slug and save it, the slug is replaced — turn off **
Replace slugs that arrive percent-encoded** in the settings if you would rather 
that never happened.

### Why does my kanji title become post-123 instead of romaji?

Because a wrong reading is worse than no reading. See the description above.
 Add
the words to the dictionary, or switch the mode to **Drop the kanji**, and you will
get a text slug.

### Does it work with custom post types?

Yes. By default every post type with an editing screen is handled. You can
 restrict
that on the settings page, or with the `robse_auto_alpha_slug_post_types` filter.

### Can I change the generated slug from my own code?

Yes, filter `robse_auto_alpha_slug_generated`:

    ```
    add_filter( 'robse_auto_alpha_slug_generated', function ( $slug, $title, $post_type, $post_id ) {
        return 'news-' . $slug;
    }, 10, 4 );
    ```

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“Robse Auto Alpha Slug” is open source software. The following people have contributed
to this plugin.

Contributors

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

[Translate “Robse Auto Alpha Slug” into your language.](https://translate.wordpress.org/projects/wp-plugins/robse-auto-alpha-slug)

### Interested in development?

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

## Changelog

#### 2.0.0

 * Kanji are no longer transliterated as Chinese by default. Titles containing
    
   kanji now use a predictable fallback pattern, and the old behaviour is still 
   available as an option.
 * Added a settings screen: kanji handling, fallback pattern, dictionary, post
    
   types, maximum length, and a preview field.
 * Added a user dictionary so recurring names and places romanize correctly.
 * Kana romanization no longer depends on the intl extension.
 * Fixed ヴァイオリン and similar katakana producing stray characters in slugs.
 * Renamed internal classes and hooks to a unique prefix. The old
    rm_auto_alpha_slug_post_types
   filter still works.

#### 1.6.0

 * Kept manually entered ASCII slugs untouched.

#### 1.0.0

 * First release, distributed from robse.jp.

## Meta

 *  Version **2.0.0**
 *  Last updated **2 days ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 6.0 or higher **
 *  Tested up to **7.1**
 *  PHP version ** 7.4 or higher **
 * Tags
 * [Japanese](https://wordpress.org/plugins/tags/japanese/)[permalink](https://wordpress.org/plugins/tags/permalink/)
   [seo](https://wordpress.org/plugins/tags/seo/)[slug](https://wordpress.org/plugins/tags/slug/)
 *  [Advanced View](https://wordpress.org/plugins/robse-auto-alpha-slug/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/robse-auto-alpha-slug/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/robse-auto-alpha-slug/reviews/)

## Contributors

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

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/robse-auto-alpha-slug/)