Title: Automatic Thumbnail Generator
Author: iuk
Published: <strong>2010年10月25日</strong>
Last modified: 2010年10月25日

---

搜尋外掛

這個外掛**並未在最新的 3 個 WordPress 主要版本上進行測試**。開發者可能不再對這個
外掛進行維護或提供技術支援，並可能會與更新版本的 WordPress 產生使用上的相容性問題。

![](https://s.w.org/plugins/geopattern-icon/automatic-thumbnail-generator.svg)

# Automatic Thumbnail Generator

 由[iuk](https://profiles.wordpress.org/iuk/)

[下載](https://downloads.wordpress.org/plugin/automatic-thumbnail-generator.0.1.zip)

 * [詳情](https://zh-hk.wordpress.org/plugins/automatic-thumbnail-generator/#description)
 * [評價](https://zh-hk.wordpress.org/plugins/automatic-thumbnail-generator/#reviews)
 *  [安裝](https://zh-hk.wordpress.org/plugins/automatic-thumbnail-generator/#installation)
 * [開發](https://zh-hk.wordpress.org/plugins/automatic-thumbnail-generator/#developers)

 [支援](https://wordpress.org/support/plugin/automatic-thumbnail-generator/)

## 描述

This plugin will scan your thumbnail-less posts and look for a suitable image to
use as a thumbnail.
 It will look for images linked in the post content and will
download and add them to the local library. Post scanning is performed only when`
the_post_thumbnail` or `get_the_post_thumbnail` are called for that particular post.

So you designed your new thumbnail-based template, but you have tons of thumbnail-
less posts and
 don’t want to spend too much time on scraping your old posts for
a thumbnail picture. Maybe you think you will probably forget to set a thumbnail
for your new posts. Maybe both, as was my case :).

When a thumbnail for a post is queried and nothing is found this plugin will scrape
the post for
 an `<img>` tag and its `href` property. Once a suitabile image is 
found (based on the configured settings), it will be downloaded ad set as the post
thumbnail. If no suitable image is found, a default one will be used.

This plugin is still in early development state. It just covers my needs (see the“
To do” section
 for more details). It has been tested only with wordpress 3.0.1,
but should work also with 2.9, since I used similar code with 2.9 (even if it was
included in my template’s `functions.php`).

The plugin is not supported. This doesn’t mean that I will not look into submitted
bugs. Anyway,
 don’t expect prompt answers, since this is done in my spare time.

### To do

Many things should be done in future releases. Here are some:

 * Current version always downloads selected linked images. This works good with
   images hosted on external sites.
    If your posts link to images hosted in your
   media library, you will end up with two images.
 * A more user friendly name should be used for images added to the library (e.g.
   Thumbnail for post …)
 * Somewhere, a button to reset the “previously scanned” status of all posts should
   be provided (on current version,
    you cas set or reset it for single posts in
   the edit page.
 * “previously scanned” status should probably be reset (or at least you should 
   be asked to) when publishing a
    updating an existing post

More ideas are wellcome.

## 安裝

 1. Upload `auto-thumbnail-generator` to the `/wp-content/plugins/` directory
 2. Activate the plugin through the ‘Plugins’ menu in WordPress
 3. Just use the default `the_post_thumbnail` or `get_the_post_thumbnail` template 
    tags

After installation, you can find plugin settings in the media settings page. The
following settings
 are available:

 * Ignore previously scanned: when checked, previously scanned posts will be re-
   scanned on each
    request if no thumbnail is linked to the post
 * Uknown image: name of the image which shall be used if no thumbnail can be found
   for a post
    (must match the media library name of an image)
 * Minimum Width and Minimum Height: minium width and height for the selected thumbnails(
   no contraints
    if set to null or 0)
 * Aspect ratio: aspect ratio (width/height) for the selected thumbnails (e.g. 1.5
   for 3:2 ratio,
    no contraints if set to null or 0)
 * Aspect ratio tolerance: tolerance to aspect ratio for selected thumbnails (percentage
   of aspect ratio,
    e.g. 0.1 tolerance with aspect ratio set to 1.5 will select
   images with aspect ratio raging from 1.35 to 1.65)

## 評價

There are no reviews for this plugin.

## 貢獻者及開發者

“Automatic Thumbnail Generator” 是一個開源的軟體。以下的人對這個外掛作出了貢獻。

貢獻者

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

[將 Automatic Thumbnail Generator 外掛本地化為台灣繁體中文版。](https://translate.wordpress.org/projects/wp-plugins/automatic-thumbnail-generator)

### 對開發相關資訊感興趣？

任何人均可[瀏覽程式碼](https://plugins.trac.wordpress.org/browser/automatic-thumbnail-generator/)、
查看 [SVN 存放庫](https://plugins.svn.wordpress.org/automatic-thumbnail-generator/)，
或透過 [RSS](https://plugins.trac.wordpress.org/log/automatic-thumbnail-generator/?limit=100&mode=stop_on_copy&format=rss)
訂閱[開發記錄](https://plugins.trac.wordpress.org/log/automatic-thumbnail-generator/)。

## 修改日誌

#### 0.1

 * Very first version. Just covers my immediate needs.

## 其它

 *  Version **0.1**
 *  Last updated **16 年之前**
 *  Active installations **10+**
 *  WordPress version ** 3.0.1 or higher **
 *  Tested up to **3.0.5**
 *  Language
 * [English (US)](https://wordpress.org/plugins/automatic-thumbnail-generator/)
 * Tags
 * [image](https://zh-hk.wordpress.org/plugins/tags/image/)[posts](https://zh-hk.wordpress.org/plugins/tags/posts/)
   [thumbnail](https://zh-hk.wordpress.org/plugins/tags/thumbnail/)
 *  [進階顯示](https://zh-hk.wordpress.org/plugins/automatic-thumbnail-generator/advanced/)

## 評分

No reviews have been submitted yet.

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

[See all reviews](https://wordpress.org/support/plugin/automatic-thumbnail-generator/reviews/)

## 貢獻者

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

## 支援

有話想說？需要協助？

 [檢視支援論壇](https://wordpress.org/support/plugin/automatic-thumbnail-generator/)