Smart Image Upload Resizer – WordPress 圖片上傳自動縮圖器

A lightweight WordPress plugin that automatically resizes uploaded images, supports WebP conversion, and optimizes website loading speed.

== Description ==
Smart Image Upload Resizer is a simple yet powerful WordPress plugin that automatically adjusts image dimensions and quality during upload, with support for WebP format through WordPress’s official advanced image format support plugin. It helps optimize your website’s image resources.

= Key Features =
* Automatically reduces uploaded image dimensions
* Customizable maximum width and height (up to 2560 pixels)
* Adjustable image quality (compression rate)
* Supports JPEG, PNG, GIF, and WebP formats
* Compatible with WordPress’s official advanced image format support plugin
* Automatically maintains image aspect ratio
* Optimized memory management for low-spec cloud hosting environments

= How to Use =
1. Install and activate the plugin through the WordPress plugins page
2. Go to “Settings” > “Smart Image Upload Resizer Settings”
3. Configure your desired maximum width, height, and image quality
4. Start uploading images, the plugin will process them automatically

= Ideal Use Cases =
* Websites needing to limit uploaded image sizes
* Storage space optimization
* Website loading speed optimization
* Websites requiring unified image dimension management

== Installation ==
1. Download and install “Smart Image Upload Resizer” from the WordPress plugin directory
2. Or upload the zip file via WordPress admin panel
3. Activate the plugin
4. Go to “Settings” > “Image Resizer Settings” to configure

== Frequently Asked Questions ==
= Will this plugin affect already uploaded images? =
No. The plugin only processes new images uploaded after activation.

= What image formats are supported? =
JPEG, PNG, GIF, and WebP formats are supported.

= What’s the maximum supported image size? =
For stability on older cloud hosting specifications, the maximum supported dimension is 2560 pixels.

= How’s the image quality after adjustment? =
You can customize image quality (1-100%) in settings, default is 80%. This value typically provides a good balance between file size and visual quality. For better visual quality, you can increase it to 85.

== Screenshots ==
1. Plugin settings page
2. Image upload effect demonstration

== Changelog ==
= 1.0.0 =
* Initial release

== Upgrade Notice ==
= 1.0.0 =
This version adds WebP support and improves memory usage efficiency. Recommended update for all users.

== Additional Info ==
* For optimal performance, it’s recommended to configure appropriate settings before uploading images
* If your website uses caching plugins, you may need to clear the cache after changing settings
* Author: Ivan Lin
* Contact Email: ivanusto@gmail.com
* [https://yblog.org](https://yblog.org/smart-image-upload-resizer/)

 

WordPress 是很流行的 CMS 系統,很多網站都採用這個來部署,而市面上也已經有不少避免編輯或商品上稿人員,把沒有縮圖的相機或手機直出大圖檔傳到網站去,造成網友讀取網頁變慢問題的 WordPress 外掛程式,主要是進行圖片上傳時自動縮圖處理的,但很可惜他們大部分是商用軟體或綁一些比較複雜的功能。我自己寫了一個簡單的超輕量外掛程式(幾KB only),專門處理在用戶、編輯上傳圖片時,自動將圖片尺寸縮小的 作業,除了JPG常見圖片格式外,也支援 WordPress 官方的 WebP 轉換,最佳化網站載入速度與節省儲存空間。

名稱定為圖片上傳自動縮圖器 | Smart Image Upload Resizer ,是個簡單但功能實用的 WordPress 外掛,能夠在上傳圖片時自動調整其尺寸和品質,並支援 WordPress 官方推出的進階圖片檔案格式支援外掛程式的 WebP 格式圖片,幫助網站管理員最佳化網站的圖片資源。

目前這個外掛已經在一些上線的網站上進行實裝運用,而 WordPress官方的審核上架通過則還要等一段時間,拭目以待。

設定相當簡單直覺。

可有效縮小圖片的尺寸,超大圖檔11MB的可以縮小到幾十KB。

縮圖的品質設定在80%到85%就很不錯了。

= 主要功能 =

* 自動縮減上傳圖片的尺寸
* 可自訂最大寬度和高度(最大支援 2560 像素)
* 可調整圖片品質(壓縮率)
* 支援 JPEG、PNG、GIF 和 WebP 格式
* 與 WordPress 官方推出的進階圖片檔案格式支援外掛程式功能相容
* 自動維持圖片比例
* 調整過的記憶體管理,可在較低規格之雲端主機上運作

= 使用方式 =

1. 透過 WordPress 安裝外掛程式頁進行安裝並啟用外掛
2. 前往「設定」>「圖片上傳自動縮圖器設定」
3. 設定您想要的最大寬度、高度和圖片品質
4. 開始上傳圖片,外掛會自動處理

= 適合的使用場景 =

* 需要限制上傳圖片大小的網站
* 想要節省儲存空間
* 需要最佳化網站載入速度
* 需要統一管理圖片尺寸的網站

== Installation ==

1. 從 WordPress 外掛目錄下載並安裝「圖片上傳自動縮圖器」
2. 或者在 WordPress 後台上傳 zip 檔案安裝
3. 啟用外掛
4. 前往「設定」>「圖片縮圖設定」進行設定

== Frequently Asked Questions ==

= 這個外掛會影響已經上傳的圖片嗎? =

不會。本外掛只會處理在啟用後新上傳的圖片。

= 支援哪些圖片格式? =

支援 JPEG、PNG、GIF 和 WebP 格式。

= 最大支援多大的圖片? =

為了確保某些較舊規格雲端共享主機之穩定性,最大僅支援 2560 像素。

= 調整後的圖片品質如何? =

您可以在設定中自訂圖片品質(1-100%),預設為 80%,這個數值通常能在檔案大小和視覺品質之間取得還不錯的平衡,如果你想要好一點的視覺品質,可以改成85。

== Screenshots ==

1. 外掛設定頁面
2. 圖片上傳效果展示

== Changelog ==

= 1.0.0 =
* 初始版本發布

== Additional Info ==

* 為確保最佳效能,建議在上傳圖片前先進行適當的設定
* 如果您的網站使用了快取外掛,可能需要在更改設定後清除快取
* 作者: Ivan Lin
* Contact Email: ivanusto@gmail.com
* [https://yblog.org](https://yblog.org/smart-image-upload-resizer/)

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