Ad Inserter is a great and highly popular free plugin that comes with many advanced advertising features so that you can insert ad codes in different areas of your site and display ads in the best way possible. For example, you will be able to place your ads before or after content, before and after paragraphs, images, comments, and the list goes on. The plugin comes with Google Adsense and Google Ad Manager support, and also supports Media.net, Infolinks, and rotating banners, among others. With this plugin, you can also insert Google Analytics and other tracking codes, insert images, HTML, CSS, JavaScript, or PHP code, customize the look of your ads using custom alignments and styles, use the post title, tags, or category names to create and add contextual ads, and plenty more.
If you want, you can upgrade to the pro version of the Ad Inserter plugin (starting at $20 for two sites) to get access to some extra features such as the ability to use ad impression and click statistics, get statistics reports for clients in PDF format, and perform A/B testing to learn which ads and settings work best for you. You also get a click fraud protection, lazy loading feature, sticky ads with the optional close button, and the list goes on.
