Disclaimer: This extension is no longer maintained as the developer is too busy. I'll just keep it here so public can still use this. If you find it helpful then good for you :)
Make your opencart site SEO Friendly!
Opencart has support for meta keywords for and meta descriptions for products and categories only.
The Good News is SIMPLE SEO Supports not only the products and categories also information that serves as pages, manufacturer and custom pages such us login page etc.
SIMPLE Seo Contains:
1. Custom title Support for all pages that exist.
2. Meta keyword support for all pages that exist.
3. Meta description support for all pages that exist.
4. SEO Friendly URLs for all pages that exist.
The "Edit Seo Option" will only show if you are logged in as admin.
It will show in the top left corner of the page you want to edit. Example you want to edit the url, meta keywords, meta title and meta descriptions of http://site.com/index.php?route=account/login, simply click the "Edit Seo Option" link in the top left corner.