How to enable SEO links in Opencart

Enabling SEO URLs in the OpenCart admin
Login to your OpenCart admin panel.
Navigate to System > Settings and click the "Edit" link.
On the "Server" tab, set "Use SEO URL’s" to "Yes" and save the changes.

Enabling SEO URLs in the OpenCart settings
Enabling SEO URLs in the OpenCart settings
In your main OpenCart directory, there should be a file called .htaccess.txt. Rename it to .htaccess. If you already have an .htaccess file, add this code at the end of the file:

If your store is in a separate directory (e.g. "shop"), open the .htaccess file in a text editor and look for this line:If your store is in a separate directory (e.g. "shop"), open the .htaccess file in a text editor and look for this line:

# SEO URL Settings RewriteEngine On # If your opencart installation does not run on the main web folder make sure you folder it does run in ie. / becomes /shop/ RewriteBase / RewriteRule ^sitemap.xml$ index.php?route=feed/google_sitemap [L] RewriteRule ^googlebase.xml$ index.php?route=feed/google_base [L] RewriteRule ^download/(.*) /index.php?route=error/not_found [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !.*\.(ico|gif|jpg|jpeg|png|js|css) RewriteRule ^([^?]*) index.php?_route_=$1 [L,QSA]
RewriteBase /shop/

Remember to put the slash (/) at the end. Otherwise the SEO URLs will not work with OpenCart.
Adding SEO keywords for your products and categories
Note: The default OpenCart SEO URL functionality doesn't work with multi language multi shops. You'll need to install an extension for that.
Do not use spaces in your keywords. Use only unique SEO keywords. You cannot use the same keyword for a product and a category.
To add SEO keywords for your products:

Go to Catalog > Products
Click "Edit" for a product
On the "Data" tab fill in the SEO keyword field

Adding SEO keyword for a product in OpenCart
Adding SEO keyword for a product in OpenCart
Go to Catalog > Categories and repeat the process for your categories