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L-IMGCDN rewrites WordPress image URLs to your CDN. Configure a CDN domain, include/exclude rules, and safe fallback to origin.
<h3>中文说明</h3>
本插件将图片 URL 重写到你的 CDN，支持自定义域名、路径规则与回源兜底。

L-IMGCDN – Image CDN Rewriter

Rewrite image URLs to your CDN for faster delivery. Supports custom domains, path patterns, and safe fallback to origin.

Kailey (trepmal)

Shaun Scovil

It was brought to my attention shortly after releasing this plugin that WordPress automatically flushes 
rewrite rules when you visit WP-Admin > Settings > Permalinks. Ingenious, right? So don’t bother installing it, 
but feel free to check out the code if you are looking for an example of how to:
<ol>
<li>Use the WordPress Settings API to add an option to an existing Settings page;</li>
<li>Use the WordPress AJAX API in conjunction with your plugin options;</li>
<li>Over-engineer a solution to a problem that has already been solved.</li>
</ol>
Enjoy! 🙂

Rewrite Flush Button

Adds a "Flush Rewrite Rules" button to WP-Admin > Settings > Permalinks.

L-IMGCDN – Image CDN Rewriter vs Rewrite Flush Button