Title: WP Multibyte Patch Author: Seisuke Kuraishi Published: July 14, 2011 Last modified: December 1, 2025 --- Search plugins ![](https://s.w.org/plugins/geopattern-icon/wp-multibyte-patch.svg) # WP Multibyte Patch By [Seisuke Kuraishi](https://profiles.wordpress.org/tenpura/) [Download](https://downloads.wordpress.org/plugin/wp-multibyte-patch.2.9.3.zip) * [Details](https://wordpress.org/plugins/wp-multibyte-patch/#description) * [Reviews](https://wordpress.org/plugins/wp-multibyte-patch/#reviews) * [Installation](https://wordpress.org/plugins/wp-multibyte-patch/#installation) * [Development](https://wordpress.org/plugins/wp-multibyte-patch/#developers) [Support](https://wordpress.org/support/plugin/wp-multibyte-patch/) ## Description Multibyte functionality enhancement for the WordPress Japanese package. [日本語の説明を読む](https://eastcoder.com/code/wp-multibyte-patch/) ## Installation 1. Upload the `wp-multibyte-patch` folder to the `/wp-content/plugins/` directory. 2. Activate the plugin through the Plugins menu in WordPress. ## Reviews ![](https://secure.gravatar.com/avatar/3c4f41c42c28880372b2ff97cdfb6351221638e826d3eb5657cc51ee2e232f15? s=60&d=retro&r=g) ### 󠀁[Very Useful Fix](https://wordpress.org/support/topic/very-useful-fix/)󠁿 [Tammy](https://profiles.wordpress.org/tammy20/) March 15, 2026 Installed this cz some characters were breaking on my site. After activating, everything started working fine. No setup needed, just works in background. tnx devs for keeping it simple 👍 ![](https://secure.gravatar.com/avatar/0b48a927b4548f3eec775f71e6b54a5213670d584d6be853fd0b3144c6f3bfb7? s=60&d=retro&r=g) ### 󠀁[Simple but Useful](https://wordpress.org/support/topic/simple-but-useful-50/)󠁿 [Kelsi](https://profiles.wordpress.org/kelsi451/) March 13, 2026 Added it to handle multibyte characters, and it works smoothly. Didn’t need to configure much. Just installed and forgot about it. Everything has been running fine since then. tnx devs for keeping it light. ![](https://secure.gravatar.com/avatar/02d8e00be0f4f6fc14a7d212ebb36f3455e5d8c75c7d68a2de00714d5814783f? s=60&d=retro&r=g) ### 󠀁[MUST HAVE for Japanese sites](https://wordpress.org/support/topic/must-have-for-japanese-sites/)󠁿 [skillsharejp](https://profiles.wordpress.org/skillsharejp/) May 4, 2022 MUST HAVE plugin if you use Japanese on your sites! ![](https://secure.gravatar.com/avatar/60da6a84136872f49c89b987c3d16ca62f0b194f84dc63e1cd1c12b2d8b2cf28? s=60&d=retro&r=g) ### 󠀁[WordPress 5以降でも必須](https://wordpress.org/support/topic/wordpress-5%e4%bb%a5%e9%99%8d%e3%81%a7%e3%82%82%e5%bf%85%e9%a0%88/)󠁿 [armdroid](https://profiles.wordpress.org/armdroid/) December 31, 2019 Wordpress5からデフォルトでなくなったので「もういらない」と思ったら大間違い。 現在 でも日本語ファイルのアップロードなどでも困らないように対処してくれます。 ![](https://secure.gravatar.com/avatar/20b9c07f41a913412ba6a00d4132d349f10e8822e8e87a5329e9c64285ac36a5? s=60&d=retro&r=g) ### 󠀁[とりあえずで入れている](https://wordpress.org/support/topic/%e3%81%a8%e3%82%8a%e3%81%82%e3%81%88%e3%81%9a%e3%81%a7%e5%85%a5%e3%82%8c%e3%81%a6%e3%81%84%e3%82%8b/)󠁿 [nosann](https://profiles.wordpress.org/nosann/) February 28, 2019 最新のバージョンにも対応しているのでとりあえず入れて使ってる このプラグインでエラー の原因になった覚えはないし サポートされ続ける限り入れたままにするだろう ![](https://secure.gravatar.com/avatar/7978377d11079e035c2190a1ca545e48857ce808768ae2a778264352358b576e? s=60&d=retro&r=g) ### 󠀁[Great plugin](https://wordpress.org/support/topic/great-plugin-18271/)󠁿 [Susumu Seino](https://profiles.wordpress.org/musus/) June 19, 2018 It was a great plugin in Japanese. [ Read all 25 reviews ](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/) ## Contributors & Developers “WP Multibyte Patch” is open source software. The following people have contributed to this plugin. Contributors * [ Seisuke Kuraishi ](https://profiles.wordpress.org/tenpura/) “WP Multibyte Patch” has been translated into 30 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/wp-multibyte-patch/contributors) for their contributions. [Translate “WP Multibyte Patch” into your language.](https://translate.wordpress.org/projects/wp-plugins/wp-multibyte-patch) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/wp-multibyte-patch/), check out the [SVN repository](https://plugins.svn.wordpress.org/wp-multibyte-patch/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/wp-multibyte-patch/) by [RSS](https://plugins.trac.wordpress.org/log/wp-multibyte-patch/?limit=100&mode=stop_on_copy&format=rss). ## Meta * Version **2.9.3** * Last updated **4 months ago** * Active installations **1+ million** * WordPress version ** 5.2 or higher ** * Tested up to **6.9.4** * Languages * [Albanian](https://sq.wordpress.org/plugins/wp-multibyte-patch/), [Catalan](https://ca.wordpress.org/plugins/wp-multibyte-patch/), [Chinese (Taiwan)](https://tw.wordpress.org/plugins/wp-multibyte-patch/), [Czech](https://cs.wordpress.org/plugins/wp-multibyte-patch/), [Dutch](https://nl.wordpress.org/plugins/wp-multibyte-patch/), [Dutch (Belgium)](https://nl-be.wordpress.org/plugins/wp-multibyte-patch/), [English (Australia)](https://en-au.wordpress.org/plugins/wp-multibyte-patch/), [English (Canada)](https://en-ca.wordpress.org/plugins/wp-multibyte-patch/), [English (New Zealand)](https://en-nz.wordpress.org/plugins/wp-multibyte-patch/), [English (South Africa)](https://en-za.wordpress.org/plugins/wp-multibyte-patch/), [English (UK)](https://en-gb.wordpress.org/plugins/wp-multibyte-patch/), [English (US)](https://wordpress.org/plugins/wp-multibyte-patch/), [French (Canada)](https://fr-ca.wordpress.org/plugins/wp-multibyte-patch/), [French (France)](https://fr.wordpress.org/plugins/wp-multibyte-patch/), [Galician](https://gl.wordpress.org/plugins/wp-multibyte-patch/), [German](https://de.wordpress.org/plugins/wp-multibyte-patch/), [Hebrew](https://he.wordpress.org/plugins/wp-multibyte-patch/), [Hungarian](https://hu.wordpress.org/plugins/wp-multibyte-patch/), [Italian](https://it.wordpress.org/plugins/wp-multibyte-patch/), [Japanese](https://ja.wordpress.org/plugins/wp-multibyte-patch/), [Lithuanian](https://lt.wordpress.org/plugins/wp-multibyte-patch/), [Marathi](https://mr.wordpress.org/plugins/wp-multibyte-patch/), [Portuguese (Brazil)](https://br.wordpress.org/plugins/wp-multibyte-patch/), [Russian](https://ru.wordpress.org/plugins/wp-multibyte-patch/), [Spanish (Argentina)](https://es-ar.wordpress.org/plugins/wp-multibyte-patch/), [Spanish (Chile)](https://cl.wordpress.org/plugins/wp-multibyte-patch/), [Spanish (Mexico)](https://es-mx.wordpress.org/plugins/wp-multibyte-patch/), [Spanish (Spain)](https://es.wordpress.org/plugins/wp-multibyte-patch/), [Spanish (Venezuela)](https://ve.wordpress.org/plugins/wp-multibyte-patch/), [Swedish](https://sv.wordpress.org/plugins/wp-multibyte-patch/), and [Ukrainian](https://uk.wordpress.org/plugins/wp-multibyte-patch/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/wp-multibyte-patch) * Tags * [i18n](https://wordpress.org/plugins/tags/i18n/)[Japanese](https://wordpress.org/plugins/tags/japanese/) [multibyte](https://wordpress.org/plugins/tags/multibyte/) * [Advanced View](https://wordpress.org/plugins/wp-multibyte-patch/advanced/) ## Ratings 5 out of 5 stars. * [ 25 5-star reviews ](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/?filter=2) * [ 0 1-star reviews ](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/wp-multibyte-patch/reviews/) ## Contributors * [ Seisuke Kuraishi ](https://profiles.wordpress.org/tenpura/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/wp-multibyte-patch/)