Title: ZigZag Image Captcha for Contact Form 7
Author: Suraj Kumar Sinha
Published: <strong>2025年12月2日</strong>
Last modified: 2025年12月31日

---

プラグインを検索

![](https://ps.w.org/zigzag-image-captcha-cf7/assets/banner-772x250.png?rev=3419384)

![](https://ps.w.org/zigzag-image-captcha-cf7/assets/icon-256x256.png?rev=3419384)

# ZigZag Image Captcha for Contact Form 7

 作者: [Suraj Kumar Sinha](https://profiles.wordpress.org/surajkumarsinha/)

[ダウンロード](https://downloads.wordpress.org/plugin/zigzag-image-captcha-cf7.1.1.zip)

 * [詳細](https://ja.wordpress.org/plugins/zigzag-image-captcha-cf7/#description)
 * [レビュー](https://ja.wordpress.org/plugins/zigzag-image-captcha-cf7/#reviews)
 * [開発](https://ja.wordpress.org/plugins/zigzag-image-captcha-cf7/#developers)

 [サポート](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/)

## 説明

**ZigZag Image Captcha for Contact Form 7** adds a powerful, image-based captcha
field designed to protect your forms from spam and bots.

The plugin generates a **zig-zag distorted captcha image** with background noise,
dots, lines, and randomized angles — making it extremely difficult for automated
bots to solve.

It integrates seamlessly with **Contact Form 7**, works fully with **AJAX submissions**,
and displays **native CF7 validation errors**.

### 🔒 Features

 * Secure zig-zag distorted image captcha
 * Random characters with noise, distortion, and angled letters
 * One-click image refresh
 * Session-based secure validation
 * Expiration timer with auto-regeneration
 * Native Contact Form 7 error messages
 * Works with AJAX and non-AJAX forms
 * Lightweight and optimized
 * No external API required
 * Fully responsive and accessible

### ⚙️ Notes

 * Requires **Contact Form 7** to be installed and active
 * No third-party services or tracking
 * Fully self-hosted captcha generation

### How to Use

 1. Open **Contact Form 7  Edit Form**
 2. Insert the captcha field where you want it to appear: `[imagecaptcha* cf7_image_captcha]`
 3. Save the form
 4. Done! 🎉 The captcha will automatically validate submissions

> The `*` makes the captcha field **required**.

## 評価

![](https://secure.gravatar.com/avatar/32caff2750679aab991b046d1a36307508012ac00a65c94bc112704434560888?
s=60&d=retro&r=g)

### 󠀁[Simple and Effective Spam Protection](https://wordpress.org/support/topic/simple-and-effective-spam-protection/)󠁿

 [saalim02091999](https://profiles.wordpress.org/saalim02091999/) 2025年12月26日

Simple and effective plugin that adds an extra layer of spam protection without 
hurting user experience. It is lightweight, easy to configure, and works seamlessly
with Contact Form 7.

 [ 1件のレビューをすべて表示 ](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/)

## 貢献者と開発者

ZigZag Image Captcha for Contact Form 7 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

 *   [ Suraj Kumar Sinha ](https://profiles.wordpress.org/surajkumarsinha/)

[“ZigZag Image Captcha for Contact Form 7” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/zigzag-image-captcha-cf7)

### 開発に興味がありますか ?

[コードを閲覧](https://plugins.trac.wordpress.org/browser/zigzag-image-captcha-cf7/)
するか、[SVN リポジトリ](https://plugins.svn.wordpress.org/zigzag-image-captcha-cf7/)
をチェックするか、[開発ログ](https://plugins.trac.wordpress.org/log/zigzag-image-captcha-cf7/)
を [RSS](https://plugins.trac.wordpress.org/log/zigzag-image-captcha-cf7/?limit=100&mode=stop_on_copy&format=rss)
で購読してみてください。

## メタ

 *  バージョン **1.1**
 *  最終更新日 **5か月前**
 *  有効インストール数 **20+**
 *  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: **6.9.4**
 *  PHP バージョン ** 7.4またはそれ以降 **
 *  言語
 * [English (US)](https://wordpress.org/plugins/zigzag-image-captcha-cf7/)
 * タグ
 * [captcha](https://ja.wordpress.org/plugins/tags/captcha/)[cf7](https://ja.wordpress.org/plugins/tags/cf7/)
   [contact form 7](https://ja.wordpress.org/plugins/tags/contact-form-7/)[form security](https://ja.wordpress.org/plugins/tags/form-security/)
   [image captcha](https://ja.wordpress.org/plugins/tags/image-captcha/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/zigzag-image-captcha-cf7/advanced/)

## 評価

 5つ星中5つ星

 *  [  1 5-星レビュー     ](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/?filter=5)
 *  [  0 4-星レビュー     ](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/?filter=4)
 *  [  0 3-星レビュー     ](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/?filter=3)
 *  [  0 2-星レビュー     ](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/?filter=2)
 *  [  0 1-星レビュー     ](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/#new-post)

[すべてのレビューを見る](https://wordpress.org/support/plugin/zigzag-image-captcha-cf7/reviews/)

## 貢献者

 *   [ Suraj Kumar Sinha ](https://profiles.wordpress.org/surajkumarsinha/)

## 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/zigzag-image-captcha-cf7/)