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Japanized for WooCommerce

by shohei.tanaka · eCommerce

Also makes 6 other plugins · 10.4K+ installs across the portfolio →

Try it live ↗ wp.org ↗

Essential Japanese localization toolkit for WooCommerce - adds address formats, payment methods, delivery scheduling, and legal compliance.

Try it live opens a temporary test site in your browser, which can take about 20 seconds to load. Plugins that rely on outside services or a full server may not work completely there.

Health

B 81/100

no flags

Active installs

10K+

≈19K estimated

Momentum

+31%

downloads vs prior 30d

Biggest opportunity: Add “postal code”, “cod fee” and “delivery scheduling” to your wp.org tags. You rank #9, #12 and #13 for them without listing them, close enough for a declared tag to move you up. WordPress.org counts only your first five tags, so with 4 listed these are the slots worth spending.

See the detail → Get the free audit
How scoring works →
81 Health · B
Maintenance 100/100
Rating quality 63/100
Support 70/100
Security 90/100

81 health vs 71 average across 9,786 eCommerce plugins

10K+

Active installs

≈19K estimated

605.9K

Total downloads

since 2014 · 1.7% still active

3.5/5

Rating

3.3 on wp.org · 21 reviews

+31%

18.1K

Downloads · 30d

category median +3%

Install conversion

How it's measured →

1.7%

of downloads still active

At least 10K of 605.9K lifetime downloads are still running, in line with its category: the median eCommerce plugin keeps 1.4%, across 5,162 plugins.

Downloads count every update, not just first installs, so older and more frequently released plugins read lower. Compare against other eCommerce plugins, not across the directory. wp.org reports active installs as the bottom of a band, so the real rate is this or higher.

This plugin shipped 30 releases in the last 12 months, and every existing install that updated counted as another download. wp.org publishes no split between first installs and updates, so we show the raw rate rather than guess at one.

Ratings · 21 reviews

Read on wp.org ↗
5★
9 4★
2 3★
1 2★
5 1★
4

Details

Version
3.0.1
Last updated
2d ago
Added
2014-06-22 · 12 yrs old
Requires WP
6.7
Tested up to
7.1.4
Requires PHP
8.3
Changelog ↗Support forum ↗Reviews ↗Advanced stats ↗

Directory ranking optimization

How it's scored →

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

78 / 100

Well optimized

Most to gain: Support resolution

Update recency 100/100

Updated 2 days ago

WP compatibility 100/100

Tested up to WordPress 7.1.4, the current branch or newer

Rating quality 72/100

3.3★ over 21 reviews, smoothed to 3.86★ and held back under 25 reviews

Listing tuning 92/100

4 of 5 tags set · short description in place

Support resolution 0/100

0 of 1 support threads resolved in the last 2 months

To rank higher: Mark more forum threads resolved — the resolved ratio feeds the ranking.

Get the full rank-higher report →

Daily downloads

Since 5 Oct 2022 · 1,490 days · wp.org + Plugin Pulse archive

+31% vs prior 30d
2.3K2 Nov 2026

30-day downloads

Rolling 30-day volume · peak 29K · peaks are release surges

18.2K2 Nov 2026

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

Japanized for WooCom · #1819youKlarna for WooCommer · #1098Conversion Tracking · #1380Kustom Checkout for · #1849

Rating trend

Star average over time · dips mark rough releases

3.32 Nov 2026

Health trend

Composite health score, snapshotted daily

812 Nov 2026

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

1.8K2 Nov 2026

Release cadence

Actively maintained
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

30

releases in the last 12 months

2d ago

latest release · v3.0.1 · 31 Oct 2026

154

tagged releases on record

Recent releases

3.0.1 · 31 Oct 20263.0.0 · 30 Oct 20262.9.20 · 22 Oct 20262.9.19 · 22 Oct 20262.9.18 · 21 Oct 20262.9.17 · 13 Oct 20262.9.16 · 7 Sep 20262.9.15 · 8 Jul 20262.9.14 · 22 Jun 20262.9.13 · 27 May 20262.9.12 · 21 May 20262.9.11 · 11 May 20262.9.10 · 27 Apr 20262.9.9 · 23 Apr 2026

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v2.6 33%
v2.9 31%
v2.2 12%
v2.5 7.2%
Older / other versions 17%

Estimated active installs

The public count shows “10K+”. Our estimate pins where the real number sits.

tracked estimate
10K–20K ≈19K

Crossed into this band 5.7 years ago; a band this size takes about a year or more to cross, which places it about 90% of the way through.

Install history since 13 Mar 2015

10K2 Nov 2026

Recent reviews

All reviews on wp.org ↗
  1. ★★★★★ yuyu009
    1.7y ago

    Japanized for WooCommerce最近、更新間隔が短いので注意していたのですが無効化してから更新しても 『このサイトで重大なエラー』 発生しました。 復旧作業疲れました。 This topic was modified 1 year, 4 months ago by yuyu009.

    Read on wp.org ↗
  2. ★★★★★ 3488521
    2.3y ago

    Version2.6.15にアップデートしたらエラーになりました。 wp-content/plugins/woocommerce-for-japan/woocommerce-for-japan.php on line 159表示されます。 This topic was modified 2 years ago by 3488521.

    Read on wp.org ↗
  3. ★★★★★ bocchimktg
    3.6y ago

    食料品には対応してない印象を受けます。生鮮食品関係のECで無料版を利用していますが、いくら休日期間を設定してもお客側からは配達希望日を設定できてしまいます。商品の消費期限が短く出荷調整などがあるため、こちらで休日とした日はお客側には配達希望日として表示しないようにして頂けると助かります。3年前のフォーラムでも似たような質問（配送に関する新機能希望2020年3月25日）が出ていて機能追加される旨が書いてありましたがプロ版では対応されていますか？

    Read on wp.org ↗
  4. ★★★★★ Takahashi Ei
    4.5y ago

    非常に意義のあるプラグインだと思いますが、更新が継続されていないようで残念です。 — 追記： 更新再開していただけました。感謝いたします。 いささか身勝手な書き方になってしまって、お詫び申し上げます。 今後とも応援させていただきます。 This topic was modified 4 years, 1 month ago by Takahashi Ei. Reason: 更新があったため

    Read on wp.org ↗
  5. ★★★★★ souichiroukikuchi
    5.7y ago

    昨日にインストールして色々と設定を行っています。 WooCommerceを日本の商習慣にローカライズするプラグインで使いやすいです。 ありがとうございます。 １点、不具合（なのかな？） 配達予約可能開始日で当日配送ができる場合は0を入力してください、とあったので0を入力すると、なぜか2で表示されます。 2を入力した時も２で表示されるので見た目からは違いが分かりませんでした。 バージョンは2.2.12 WPのバージョンは5.6.2 です。

    Read on wp.org ↗
  6. ★★★★★ hisakato
    5.9y ago

    下記、エラーが発生し、ログインができなくなり、サイトにもアクセスできなくなりました。 Parse error: syntax error, unexpected ‘array’ (T_ARRAY), expecting function (T_FUNCTION) or const (T_CONST) in /home/xs280755/muo-mou.com/public_html/wp-content/plugins/woocommerce-for-japan/includes/admin/class-jp4wc-admin-screen.php on line 19 どのように対処すれば良いでしょうか

    Read on wp.org ↗
  7. ★★★★★ master
    5.9y ago

    Parse error: syntax error, unexpected ‘string’ (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in /home/*****/********/wp-content/plugins/woocommerce-for-japan/woocommerce-for-japan.php on line 36 修正ありがとうございます。 更新したら直りました。 This topic was modified 5 years, 7 months ago by master. This topic was modified 5 years, 7 months ago by master.

    Read on wp.org ↗
  8. ★★★★★ wezc_0114
    6.1y ago

    日付フォーマットでY/m/d/lとやると曜日が英語になります。 例えば、水曜日とか水のように表示するにはどうしたらよいですか？

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. 2026-10-31 Version 3.0.1 Added – The report of the free security check starts with a comparison with the checks on the Security tab: what only the free check found, what only the checks on the tab found and which checks on the tab could not be c 3.0.1
  2. 2026-10-30 Version 3.0.0 Added – A security check for the site, on a new Security tab (WooCommerce → JP4WC Settings → Security). Once a day it downloads a list of known vulnerabilities from wc.artws.info (data from Wordfence Intelligence) and ch 3.0.0
  3. 2026-10-22 Version 2.9.19 Fixed – A request that was running while Japanized for WooCommerce was being updated could still stop with a fatal error (“Failed opening required …”) after the 2.9.18 fix (#266), because some files were read only later 2.9.19
  4. 2026-10-22 Version 2.9.20 Added – Administrators now see a dialog on admin screens when the site’s PHP is older than the fix for the critical PHP2Shell vulnerabilities (CVE-2026-109618 / CVE-2026-109619): PHP 8.2.35, 8.3.36, 8.4.27 or 8.5.12, wit 2.9.20
  5. 2026-10-21 Version 2.9.18 Fixed – In the Checkout block, a customer who came back from Paidy Checkout after Paidy declined the payment saw no message, because the notice was only added on the classic checkout; the Checkout block now shows it as a 2.9.18
  6. 2026-10-13 Version 2.9.17 Added – A “Morning” (午前中) option can be shown as the first delivery time zone: enable it under Delivery settings → Delivery time settings (off by default) and customise its label; it is offered on both the classic and th 2.9.17

Security history

via Wordfence Intelligence

All 7 disclosed vulnerabilities are patched in the current version (3.0.1). Sites still on an older version should update.

  1. Patched Medium · 5.3 Japanized for WooCommerce <= 2.9.12 - Missing Authorization ↗
    2026-06-29 CVE-2026-57340 Missing Authorization Affects <= 2.9.12 Patched in 2.9.13
  2. Patched Medium · 5.3 Japanized for WooCommerce <= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation ↗
    2026-02-26 CVE-2026-1305 Improper Authentication Affects <= 2.8.4 Patched in 2.8.5
  3. Patched Medium · 5.3 Japanized for WooCommerce <= 2.7.17 - Missing Authorization to Unauthenticated Order Status Modification ↗
    2026-01-08 CVE-2025-14886 Missing Authorization Affects <= 2.7.17 Patched in 2.8.0
  4. Patched Medium · 4.3 Japanized For WooCommerce <= 2.6.40 - Cross-Site Request Forgery ↗
    2025-05-19 CVE-2025-48284 Cross-Site Request Forgery Affects <= 2.6.40 Patched in 2.6.41
  5. Patched Medium · 6.5 Japanized For WooCommerce <= 2.6.4 - Missing Authorization ↗
    2023-11-09 CVE-2023-47698 Missing Authorization Affects <= 2.6.4 Patched in 2.6.5
  6. Patched Medium · 6.1 Japanized For WooCommerce <= 2.5.6 - Reflected Cross-Site Scripting ↗
    2023-04-17 CVE-2023-0948 Improper Neutralization of Input During Web Page Generation Affects <= 2.5.6 Patched in 2.5.7
  7. Patched Medium · 6.1 Japanized For WooCommerce <= 2.5.4 - Reflected Cross-Site Scripting ↗
    2023-02-21 CVE-2023-0942 Improper Neutralization of Input During Web Page Generation Affects <= 2.5.4 Patched in 2.5.5

Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.

CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.

Languages

via translate.wordpress.org

Translated into 2 languages, 1 at 90% or more

Japanese 96%
Ukrainian 14%

AI assistants

How it's measured →

Whether ChatGPT and Claude name this plugin when asked the category question, and whether the readme gives them something to quote.

Not measured yet for this plugin’s topics. Its tracked searches are not among the measured topics. See the topics measured so far.

Readme readiness

8 of 8 pass · checked 28 Oct 2026

Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.

  • ✓ Says what it does "Essential Japanese localization toolkit for WooCommerce - adds address formats, payment methods, delivery s..."
  • ✓ Has a FAQ 10 questions in the FAQ.
  • ✓ FAQ asks real questions 10 of 10 read like questions a user would type.
  • ✓ Names who it is for Names its audience or use cases ("use this", "designed for", "who needs").
  • ✓ Names what it works with Mentions WooCommerce.
  • ✓ Headings and lists 2 headings and 1 list.
  • ✓ Enough to quote 4,559 characters of description.
  • ✓ Tags match the text 3 of 4 tags appear in the text; "ecommerce" does not.

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2021-02-04 9K+ → 10K+ up after 170 days in tier
  2. 2020-08-18 2K+ → 9K+ up after 1332 days in tier
  3. 2016-12-25 1K+ → 2K+ up after 136 days in tier
  4. 2016-08-11 900+ → 1K+ up after 327 days in tier
  5. 2015-09-19 400+ → 900+ up

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

Embed this report card

Drop a live Pulse card for Japanized for WooCommerce into a readme, a review or a deck. It updates itself.

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Preview card ↗

Japanized for WooCommerce: 10K+ active installs, 3.3★ (21 reviews). Plugin Pulse (WP Mayor), as of 2026-11-02. https://plugins.wpmayor.com/plugin/woocommerce-for-japan

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