SmartCrawl  is a free plugin from wpmudev and you can also buy the Pro plugin as so you will need a subscription to download and install the plugin.  They have a lot of plugins that we use for most of our clients so I would advise looking into them if you haven’t yet.

Download the Plug-in Here

I have been using the wpmudev Plugins a lot since I started on wordpress which do the works as any other premium plugin would, but this plugin has not only won my heart but it works as I wanted it to , although I am using the free version but it has performed much better than any other plugin on net.

Some features I liked best :

1. It’s FREE
2. It is very light and doesn’t effects on performance of page
3. It has nice features like
   • Google Preview
   • Allows to Edit Meta Tags,Title and Description and shows how much info actually is needed as we tend to push our keywords more it shows you color bands to let us know the limit, this is so much wonderful
   • Give you Instant SEO Analysis
   • Give Detailed Analysis of Issues and how to solve them