Title: Thumbnails and Featured Images
Author: Stefano Lissa
Published: <strong>2015年11月18日</strong>
Last modified: 2026年3月26日

---

プラグインを検索

![](https://ps.w.org/thumbnails/assets/banner-772x250.png?rev=3452729)

![](https://ps.w.org/thumbnails/assets/icon-256x256.png?rev=3452729)

# Thumbnails and Featured Images

 作者: [Stefano Lissa](https://profiles.wordpress.org/satollo/)

[ダウンロード](https://downloads.wordpress.org/plugin/thumbnails.1.1.9.zip)

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

 [サポート](https://wordpress.org/support/plugin/thumbnails/)

## 説明

WordPress themes need thumbnails in different sizes and they even let the user to
change those dimensions.
 But WordPress has a problem: it does not regenerates the
thumbnails when new sizes are registered.

Thumbnails intercepts the request by themes or plugins to WordPress to get a specific
thumbnail, generates it and caches it on disk.
 Efficiently, it produces a perfectly
cropped image, with the right dimension avoiding unpleasant stretching.

Thumbnails does not modify your blog or your media library. When deactivated the
blog returns to its old behavior.

The second important feature is the autoselection of featured image for post which
are missing it.
 You can choose between the on the fly selection without persist
it or, for better performances, to persist it once selected.

Read the [Thumbnails](https://www.satollo.net/plugins/thumbnails) official page 
for detailed information.

Theme developers can find instructions to use it (no code tied to Thumbnails needs
to be written!).

Other plugins by Stefano Lissa:

 * [Monitor](https://www.satollo.net/plugins/monitor)
 * [Hyper Cache](https://www.satollo.net/plugins/hyper-cache)
 * [Newsletter](https://www.thenewsletterplugin.com)
 * [Header and Footer](https://www.satollo.net/plugins/header-footer)
 * [Include Me](https://www.satollo.net/plugins/include-me)
 * [Ads for bbPress](https://www.satollo.net/plugins/ads-bbpress)

### Screen shots

No screenshots are available at this time.

## インストール

 1. Put the plug-in folder into [wordpress_dir]/wp-content/plugins/
 2. Go into the WordPress admin interface and activate the plugin
 3. Optional: go to the options page and configure the plugin

## FAQ

See the [Thumbnails](https://www.satollo.net/plugins/thumbnails) official page.

## 評価

![](https://secure.gravatar.com/avatar/1c52c3cbe85b6f60d76fd3e833a37ca19d6649b131f0cc3f6fcfa54c62e96e91?
s=60&d=retro&r=g)

### 󠀁[On the verge of something wonderful…](https://wordpress.org/support/topic/on-the-verge-of-something-wonderful/)󠁿

 [glenstewart](https://profiles.wordpress.org/glenstewart/) 2023年4月2日

Great idea, and can go to the next level to be even more awesome… rather than cropping
images (and losing content), keep the largest dimension and provide an option to
add a colored background, filling the gap (eg. with black) or transparent. switch
the format to WebP, to improve PageSpeed metrics provide an option to turn off all
thumbnail generation in the wp-content/uploads folder, and do it with this plugin,
per the above, instead. Stop WP core from contaminating the uploads folder with 
dynamic content.

![](https://secure.gravatar.com/avatar/54096e1f20e8606dfdb00bf1f0671fdcc7eaf3883ad618623fc807ba48560be4?
s=60&d=retro&r=g)

### 󠀁[should be included in the core.](https://wordpress.org/support/topic/should-be-included-in-the-core/)󠁿

 [Kodo](https://profiles.wordpress.org/cck23/) 2022年8月17日

I like this plugin's approach of generating thumbnails when asked. I hope the plugin
will be around for a long time. Or if it were included in the core, it would cut
down on wasted unused image files on servers around the world. Now if only it would
support WebP and responsive images, it would be perfect. Thanks.

![](https://secure.gravatar.com/avatar/a109691359dee0e804d79655217fc1cd45521129d56efd09a84956ab44b43bef?
s=60&d=retro&r=g)

### 󠀁[Amazing](https://wordpress.org/support/topic/amazing-1731/)󠁿

 [franciscus](https://profiles.wordpress.org/franciscus/) 2018年3月10日

I re-use my post thumbnail images in various ways, so I like to upload them full
size, and I need the software to resize them as needed. This plugin does exactly
that for me. It performs its magic transparently and makes my pages a lot lighter.
Highly recommended.

![](https://secure.gravatar.com/avatar/cc51d0ac595f375402955a7a5fe021b0deba79d8574e4e1d9db7fdaf6abfec29?
s=60&d=retro&r=g)

### 󠀁[The one that solves my problem](https://wordpress.org/support/topic/the-one-that-solves-my-problem/)󠁿

 [Roberto Fietta](https://profiles.wordpress.org/webagile/) 2017年2月20日

This plugin solves my problems with the WP thumbnails, thanks Stefano!

![](https://secure.gravatar.com/avatar/9a91528deeb53161704f4fa1b82687f084fb9ea390704058ffc5a5e2e3578e10?
s=60&d=retro&r=g)

### 󠀁[Outstanding Plugin](https://wordpress.org/support/topic/outstanding-plugin-59/)󠁿

 [Terry J](https://profiles.wordpress.org/texasbiz/) 2016年9月3日

Just want the doctor ordered! This plugin solved my nagging issue on a custom theme.
Thank you for sharing.

![](https://secure.gravatar.com/avatar/b553ddfd3593f64cda4b436e9f839c31c6cf29fea457be2a42b64b6373252ec6?
s=60&d=retro&r=g)

### 󠀁[Great plugin, works out of the box!](https://wordpress.org/support/topic/great-plugin-works-out-of-the-box-1/)󠁿

 [Noahj Champion](https://profiles.wordpress.org/noahj-champion/) 2016年9月3日

Great plugin, works out of the box (2 settings choices) and super light weight.

 [ 6件のレビューをすべて表示 ](https://wordpress.org/support/plugin/thumbnails/reviews/)

## 貢献者と開発者

Thumbnails and Featured Images 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

 *   [ Stefano Lissa ](https://profiles.wordpress.org/satollo/)

“Thumbnails and Featured Images” は1ロケールに翻訳されています。 [翻訳者](https://translate.wordpress.org/projects/wp-plugins/thumbnails/contributors)
のみなさん、翻訳へのご協力ありがとうございます。

[“Thumbnails and Featured Images” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/thumbnails)

### 開発に興味がありますか ?

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

## 変更履歴

#### 1.1.9

 * Added the fallback feature image option

#### 1.1.8

 * Fixed readme

#### 1.1.7

 * WP 6.9 Check
 * PCP Check

#### 1.1.6

 * Checked compatibility with WP 6.4.1

#### 1.1.5

 * Readme and plugin headers fix for WP 5.8

#### 1.1.4

 * Checked compatibility with WP 5.7

#### 1.1.3

 * Checked compatibility with WP 5.5

#### 1.1.2

 * Added crop options

#### 1.1.1

 * Compatibility check with WP 5.2.4

#### 1.1.0

 * Compatibility changes

#### 1.0.8

 * Fixed a debug notice

#### 1.0.7

 * Added core size processing
 * Improved admin CSS

#### 1.0.6

 * Added featured image persistence option

#### 1.0.5

 * Compatibility checks with WP 4.7
 * Tagged to be translatable on translate.wordpress.org (even you can help!)

#### 1.0.4

 * Fixes to the options panel

#### 1.0.3

 * Compatibility with WP 4.4.2

#### 1.0.2

 * Fixes

#### 1.0.0

 * First public release (but it is working on many blogs since months)

## メタ

 *  バージョン **1.1.9**
 *  最終更新日 **7か月前**
 *  有効インストール数 **900+**
 *  WordPress バージョン ** 6.1またはそれ以降 **
 *  検証済み最新バージョン: **6.9.10**
 *  PHP バージョン ** 7.4またはそれ以降 **
 *  言語
 * [English (US)](https://wordpress.org/plugins/thumbnails/)、[Russian](https://ru.wordpress.org/plugins/thumbnails/).
 *  [プラグインを翻訳](https://translate.wordpress.org/projects/wp-plugins/thumbnails)
 * タグ
 * [featured image](https://ja.wordpress.org/plugins/tags/featured-image/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/thumbnails/advanced/)

## 評価

 5つ星中5つ星

 *  [  6 5-星レビュー     ](https://wordpress.org/support/plugin/thumbnails/reviews/?filter=5)
 *  [  0 4-星レビュー     ](https://wordpress.org/support/plugin/thumbnails/reviews/?filter=4)
 *  [  0 3-星レビュー     ](https://wordpress.org/support/plugin/thumbnails/reviews/?filter=3)
 *  [  0 2-星レビュー     ](https://wordpress.org/support/plugin/thumbnails/reviews/?filter=2)
 *  [  0 1-星レビュー     ](https://wordpress.org/support/plugin/thumbnails/reviews/?filter=1)

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

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

## 貢献者

 *   [ Stefano Lissa ](https://profiles.wordpress.org/satollo/)

## 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/thumbnails/)