It’s a strategic question which you need to understand this way. Infographics don’t increase sales directly, but they make certain changes in your website that put a positive impact on the sales process. In order for infographics to increase sales, you need to make sure that they are perfectly designed and highly optimized. Take the help of a professional infographic designer if you have to, but don’t ever compromise with infographics quality. Remember, the better the quality, the higher will be the user engagement on that page.
Along with high-quality creation, don’t forget to optimize infographics for SEO purposes. Place your primary keyword in its content section, description, alt tag, file name, etc. for quick indexing and first page rankings. As your infographic rankings on the first page, it starts attracting thousands of organic views to that particular page. If you have a separate sales page, you can interlink that page from the infographic page to divert traffic to your sales page. When the traffic flow is high and targeted, you will start getting more sales with the help of this traffic. So, yes infographics improve sales by a significant margin.