While Joomla doesn't have as many plugins, or extensions, as WordPress, but you can find free and paid SEO extensions to help your Joomla website rank better in the search results. With 2.5 million websites powered by Joomla, developers are creating new extensions every day. Here are some of the best SEO extensions for Joomla:
Free SEO Extensions
SEOFLI - This extension automatically sets alt and title attributes for links and images. Compatible with Joomla 3.0.
EFSEO - Easy Frontend SEO - EFSEO helps users control automatically metadata, including title, keywords, and more. It offers all the SEO functionalities you need to rank your Joomla site.
JoomSEF - Create search engine friendly URLs, generate metadata, create custom 404 pages and more. JoomSEF has many of the same features as paid SEO extensions. It's compatible with Joomla 3.0.
SEO Pagination - Offers pagination and gives each page a unique title with a meta description. SEO Pagination has one-click installation and works with Joomla 1.5. 2.5 and Joomla 3.
SEO-Generator - SEO-Generator automatically generates keyword tags and a description for your articles. It even works on older articles written before the extension is installed.
sh404SEF - sh404SEF offers search-friendly URL suggestions, avoid duplicate URLs, easy 404 redirects and more. You can access metadata from the front end.
Don't count on extensions to make your Joomla site SEO-friendly.Extensions merely automate processes you can do yourself. For example, you can configure your global settings to create SEO-friendly URLs. Besides, no extension can help you create useful content which people want to consume, nor will an extension create backlinks for you. Getting your technical SEO up to snuff is a good start, but that's all it is; a start. The real work begins when you research keywords, optimize your content and start a link building campaign. For more information click here https://www.reddit.com/r/SEO/comments/d1imt6/apluginsimilartoyoastforjoomla/.