mryuanshu

WppaoImage图片增强插件，来自Wppao团队缘殊开发，只为完成网站运营时必须要的几个图片处理功能，如远程图片本地化，图片加水印等功能。
目前支持的功能： 
* 图片文字水印功能 
* 图片文字水印字体自选 
* 图片文字水印尺寸自选 
* 图片文字水印颜色自选 
* 图片使用图片水印功能 
* 水印位置自选

Wppao Image

Wordpress图片增强插件，可以将远程图片获取到本地，并且可以对文章的图片打水印。

nxtweb

Next Watermark is the simplest way to add automatically text or/and image watermarks on your .gif, .jpg, .png and .webp photos when uploading them in the WordPress media library. 
You can choose the text, size, font, transparency, position and orientation of your watermark text. 
You can also use directly any watermak image in GIF, JPEG or PNG formats, choosing special effects, opacity, orientation and absolute, relative or preset positions. 
Watermarks can be applied on GIF, JPEG, PNG or WEBP images. 
You can choose the image types, the images sizes and the post types to apply your watermarks or not. 
You can use backup to save your images before watermarking, and restore them automatically with a simple button. 
English & French language available. It is very light too. 
The plugin uses PHP GD script Library.
This plugin comes with the following fonts, but you can add your own fonts. 
Arial, Arial Black, Comic Sans MS, Courier New, Impact, Tahoma, Times New Roman, Verdana
<h3>Languages</h3>
This plugin is available in English & French.
<h3>Donations</h3>
Keep this plugin alive and improving, your help is appreciated. 
<a href="https://www.paypal.com/donate/?hosted_button_id=DRNEFMLP7CU5Q" rel="nofollow ugc">Consider donating</a>!
<h3>Custom development</h3>
You need a new plugin? We can talk and help you with the plugin custom. 
At Next Web, we can develop your future new website or plugins adapted to your needs. 
Just contact <a href="https://nxt-web.com/" rel="nofollow ugc">Next Web</a>!

Next Watermark

Next Watermark helps you easily add automatically text or/and image watermarks on your images (GIF, JPEG, PNG and WEBP formats supported)! Backup/rest …

Wppao Image vs Next Watermark