Title: Easy Responsive Test
Author: osCitas Themes
Published: <strong>2013年11月21日</strong>
Last modified: 2026年6月9日

---

プラグインを検索

![](https://ps.w.org/easy-responsive-test/assets/banner-772x250.png?rev=808085)

![](https://ps.w.org/easy-responsive-test/assets/icon-128x128.jpg?rev=1168236)

# Easy Responsive Test

 作者: [osCitas Themes](https://profiles.wordpress.org/oscitas/)

[ダウンロード](https://downloads.wordpress.org/plugin/easy-responsive-test.zip)

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

 [サポート](https://wordpress.org/support/plugin/easy-responsive-test/)

## 説明

Easy Responsive Test (ERT) is an essential tool for WordPress administrators and
developers who need to verify how a site looks at different screen dimensions. After
activation, the plugin creates a dedicated preview page that loads your site inside
a resizable iframe with a toolbar for switching between preset and custom viewport
sizes.

You do not need to resize your browser window every time you test responsiveness.
Install ERT, configure your sizes, and preview your site from the admin settings
screen.

#### Features

 * Test your site at multiple screen sizes from a single preview page
 * Six common viewport sizes included out of the box (320×480 through 1280×1024)
 * Add unlimited custom height:width pairs from the settings page
 * Customize toolbar background and foreground colors with the WordPress color picker
 * One-click “Check Your Site” link from the ERTP Settings admin page
 * Demo page is created automatically on activation and hidden from the Pages list
 * Settings link on the Plugins screen for quick access
 * Admin bar is hidden on the preview page for an accurate front-end view
 * Settings and preview restricted to users with the `manage_options` capability

#### How it works

 1. Activate the plugin. A private preview page titled “ERTP Site Check” is created
    automatically.
 2. Open **ERTP Settings** in the WordPress admin menu to configure viewport sizes 
    and toolbar colors.
 3. Click **Check Your Site** to open the preview page in a new tab.
 4. Use the toolbar to switch between configured viewport sizes while your live site
    loads inside the iframe.

#### Default viewport sizes

 * 320 x 480
 * 480 x 600
 * 540 x 960
 * 600 x 960
 * 1024 x 600
 * 1280 x 1024

Sizes are entered as `height:width` pairs, comma-separated (for example: `320:480,
768:1024`).

#### Other plugins from oscitas

For Bootstrap shortcodes, check out [Easy Bootstrap Shortcodes](https://wordpress.org/plugins/easy-bootstrap-shortcodes/).

Looking for a parallax slider? Try [Easy WordPress Parallax Slider](https://wordpress.org/plugins/easy-wp-parallax-slider/).

## スクリーンショット

[⌊Easy Responsive Test settings page⌉⌊Easy Responsive Test settings page⌉[

Easy Responsive Test settings page

[⌊Responsive preview toolbar⌉⌊Responsive preview toolbar⌉[

Responsive preview toolbar

[⌊1280 x 1024 viewport⌉⌊1280 x 1024 viewport⌉[

1280 x 1024 viewport

[⌊1024 x 600 viewport⌉⌊1024 x 600 viewport⌉[

1024 x 600 viewport

[⌊600 x 960 viewport⌉⌊600 x 960 viewport⌉[

600 x 960 viewport

[⌊960 x 540 viewport⌉⌊960 x 540 viewport⌉[

960 x 540 viewport

[⌊480 x 600 viewport⌉⌊480 x 600 viewport⌉[

480 x 600 viewport

## インストール

#### Automatic installation

 1. In your WordPress admin, go to **Plugins > Add New**.
 2. Search for “Easy Responsive Test”.
 3. Click **Install Now**, then **Activate**.

#### Manual installation

 1. Download and unzip `easy-responsive-test.zip`.
 2. Upload the `easy-responsive-test` folder to `/wp-content/plugins/`.
 3. In the WordPress admin, go to **Plugins** and activate **Easy Responsive Test**.

#### After activation

 1. Open **ERTP Settings** from the left-hand admin menu (smartphone icon).
 2. Adjust viewport sizes and toolbar colors as needed, then click **Update Settings**.
 3. Click **Check Your Site** to open the responsive preview in a new browser tab.

## FAQ

### Who can access the preview page?

Only users with the `manage_options` capability (typically Administrators) can view
the preview page and change plugin settings.

### Where is the preview page?

On activation, the plugin creates a page titled “ERTP Site Check” with the slug `
erp_check_site`. The page is hidden from the standard Pages list in the admin to
avoid accidental edits. Use the **Check Your Site** link on the settings page to
open it.

### What happens when I deactivate the plugin?

Deactivation removes plugin options and deletes the automatically created preview
page. Reactivating the plugin creates a fresh preview page.

### How do I add custom screen sizes?

In **ERTP Settings**, enter sizes in the Window Sizes field as `height:width` pairs
separated by commas. For example: `375:667, 414:896, 768:1024`.

## 評価

![](https://secure.gravatar.com/avatar/9af4f814db56d1e2ba0c1a946942a603457a111dba4a72a2f95fa36d9506fe20?
s=60&d=retro&r=g)

### 󠀁[Excellent Plugin](https://wordpress.org/support/topic/excellent-plugin-9929/)󠁿

 [gunveer007](https://profiles.wordpress.org/gunveer007/) 2026年7月23日

Very easy to use, and good part is you can add your own screen sizes to check your
site.

 [ 3件のレビューをすべて表示 ](https://wordpress.org/support/plugin/easy-responsive-test/reviews/)

## 貢献者と開発者

Easy Responsive Test 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

 *   [ osCitas Themes ](https://profiles.wordpress.org/oscitas/)

[“Easy Responsive Test” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/easy-responsive-test)

### 開発に興味がありますか ?

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

## 変更履歴

#### 3.0.0

 * Add CSRF nonce and capability checks to the settings form.
 * Restrict the demo preview page to users with `manage_options`.
 * Compatibility: WordPress 6.5+ and 7.0; PHP 7.4+ and 8.x.

#### 2.0

 * You can set custom height and width for each viewport size.
 * You can show or hide the toolbar.

#### 1.0

 * Initial release.

## メタ

 *  バージョン **3.0.0**
 *  最終更新日 **2か月前**
 *  有効インストール数 **10+**
 *  WordPress バージョン ** 6.5またはそれ以降 **
 *  検証済み最新バージョン: **7.0.2**
 *  PHP バージョン ** 7.4またはそれ以降 **
 *  言語
 * [English (US)](https://wordpress.org/plugins/easy-responsive-test/)
 * タグ
 * [mobile](https://ja.wordpress.org/plugins/tags/mobile/)[responsive](https://ja.wordpress.org/plugins/tags/responsive/)
   [testing](https://ja.wordpress.org/plugins/tags/testing/)[viewport](https://ja.wordpress.org/plugins/tags/viewport/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/easy-responsive-test/advanced/)

## 評価

 5つ星中5つ星

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

[Your review](https://wordpress.org/support/plugin/easy-responsive-test/reviews/#new-post)

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

## 貢献者

 *   [ osCitas Themes ](https://profiles.wordpress.org/oscitas/)

## 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/easy-responsive-test/)