The developers at ijoomla have release a free metatag generator component for Joomla! which manages your metatags and generates metatag descriptions plus keywords for your web site content.

The metatag generator is a useful addition in terms of SEO search engine optimization for your Joomla open source CMS. The free metatag component offers the following built in functionality.

Metatags management

• Displays a page that lets you edit the meta tags for up to 50 pages at a time!
• Choose the pages for which you want to generate keywords/descriptions;
• Supports meta tags for Mosets Tree pages.

Description metatag generation:

• Automatically create descriptions!
• Choose the description source (intro text or full text);
• Type your descriptions or edit existing or generated text;
• Choose the descriptions’ maximum character size;
• Overwrite existing descriptions after auto-generation;
• Edit out unwanted keywords such as "mosimage" or "pagebreak".

Keyword generation:

• Automatically extract the keywords from your text;
• Edit filter list to block useless keywords like "the", "and" etc (1000 most common words in English are provided);
• Choose the number and length of keywords to extract;
• Select the delimiter (choose between a comma and a break);
• Overwrite existing keywords during over-generation;
• Enter the keywords or edit existing or generated words;
• Edit out special characters.

You can download the free Joomla metatag generator from the  ijoomla web site.