Title: Custom 404 Handler
Author: jfkconsulting
Published: <strong>2025年5月17日</strong>
Last modified: 2025年5月17日

---

プラグインを検索

![](https://ps.w.org/custom-404-handler/assets/banner-772x250.png?rev=3295418)

![](https://ps.w.org/custom-404-handler/assets/icon-256x256.png?rev=3295413)

# Custom 404 Handler

 作者: [jfkconsulting](https://profiles.wordpress.org/jfkconsulting/)

[ダウンロード](https://downloads.wordpress.org/plugin/custom-404-handler.1.0.0.zip)

 * [詳細](https://ja.wordpress.org/plugins/custom-404-handler/#description)
 * [レビュー](https://ja.wordpress.org/plugins/custom-404-handler/#reviews)
 *  [インストール](https://ja.wordpress.org/plugins/custom-404-handler/#installation)
 * [開発](https://ja.wordpress.org/plugins/custom-404-handler/#developers)

 [サポート](https://wordpress.org/support/plugin/custom-404-handler/)

## 説明

This plugin allows you to take full control over how your WordPress site handles
404 (Not Found) errors. Instead of the default theme’s 404 page, you can:

 * **Display a Custom 404 Page:** Choose any published page on your site to serve
   as your 404 error page.
 * **Log 404 Errors:** Keep track of which URLs are causing 404 errors, including
   the referring URL, IP address, and user agent. This helps identify broken links
   or malicious activity.
 * **Analyze Logs:** View statistics like the most frequent 404 URLs and top referrers
   directly in your WordPress admin.
 * **Create Automatic Redirects:** Easily set up 301 (permanent) or 302 (temporary)
   redirects for specific 404 URLs to send visitors to the correct content. Track
   redirect hits.
 * **Export Logs:** Download your 404 error logs as a CSV file for external analysis.
 * **Optionally Redirect All 404s to Homepage:** A simple option to redirect all
   404 errors directly to your site’s homepage.
 * **Add `noindex` Tag:** Automatically add a `noindex, follow` meta tag to your
   404 pages (custom or default) to prevent search engines from indexing them.

## スクリーンショット

 * [[
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## インストール

 1. Upload the `custom-404-handler` folder to the `/wp-content/plugins/` directory.
 2. Activate the plugin through the ‘Plugins’ menu in WordPress.
 3. Go to the ‘404 Handler’ -> ‘Settings’ menu in your WordPress admin to configure
    the plugin.
 4.  * Choose a custom 404 page (optional).
     * Enable/disable logging and set log limits.
     * Configure homepage redirect and `noindex` options.
 5. Visit ‘404 Handler’ -> ‘404 Logs’ to view logged errors and statistics.
 6. Visit ‘404 Handler’ -> ‘Redirects’ to manage your 404 redirects.

## FAQ

### Does this plugin create the 404 page content for me?

No, you need to create a standard WordPress page first. Then, in the plugin’s settings,
you select that page to be displayed when a 404 error occurs.

### Will this slow down my site?

The plugin is designed to be lightweight. Logging occurs only on actual 404 errors,
and redirects are checked efficiently. Performance impact should be minimal.

### Where is the log data stored?

Log data and redirect information are stored in custom tables (`wp_404_logs` and`
wp_404_redirects`) within your WordPress database.

### What happens if I don’t select a custom 404 page?

If no custom page is selected in the settings (and the homepage redirect option 
is off), your theme’s default `404.php` template will be used, but logging and redirects(
if configured) will still function. The `noindex` tag will also be applied if enabled.

## 評価

このプラグインにはレビューがありません。

## 貢献者と開発者

Custom 404 Handler はオープンソースソフトウェアです。以下の人々がこのプラグインに
貢献しています。

貢献者

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

[“Custom 404 Handler” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/custom-404-handler)

### 開発に興味がありますか ?

[コードを閲覧](https://plugins.trac.wordpress.org/browser/custom-404-handler/)する
か、[SVN リポジトリ](https://plugins.svn.wordpress.org/custom-404-handler/)をチェック
するか、[開発ログ](https://plugins.trac.wordpress.org/log/custom-404-handler/)を
[RSS](https://plugins.trac.wordpress.org/log/custom-404-handler/?limit=100&mode=stop_on_copy&format=rss)
で購読してみてください。

## 変更履歴

#### 1.0.0

 * Initial release.

## メタ

 *  バージョン **1.0.0**
 *  最終更新日 **1年前**
 *  有効インストール数 **40+**
 *  WordPress バージョン ** 5.0またはそれ以降 **
 *  検証済み最新バージョン: **6.8.5**
 *  PHP バージョン ** 7.0またはそれ以降 **
 *  言語
 * [English (US)](https://wordpress.org/plugins/custom-404-handler/)
 * タグ
 * [404](https://ja.wordpress.org/plugins/tags/404/)[custom 404](https://ja.wordpress.org/plugins/tags/custom-404/)
   [error](https://ja.wordpress.org/plugins/tags/error/)[logging](https://ja.wordpress.org/plugins/tags/logging/)
   [redirect](https://ja.wordpress.org/plugins/tags/redirect/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/custom-404-handler/advanced/)

## 評価

レビューはまだ送信されていません。

[Your review](https://wordpress.org/support/plugin/custom-404-handler/reviews/#new-post)

[すべてのレビューを見る](https://wordpress.org/support/plugin/custom-404-handler/reviews/)

## 貢献者

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

## サポート

意見や質問がありますか ?

 [サポートフォーラムを表示](https://wordpress.org/support/plugin/custom-404-handler/)