Semrush Introduces LLM Gap Analyzer to the App Center
The LLM Gap Analyzer app helps marketers understand how and why their content appears in large language models, and just as importantly, why it does not.
April 21, 2026
Are you ready to bring new visitors to your site and create a digital experience that converts these casual visitors into paying customers?
Ensure your website is a turbo boost for your business, not an anchor that drags it down. The new app Website Checker—available in the Semrush App Center—helps busy marketers and business owners do just that.
This app identifies areas on your website that can be fine-tuned to improve its performance and user experience.
With Website Checker you can:
· Check your website speed and performance
· Monitor your site performance on desktop and mobile devices
· Ensure your website complies with basic SEO guidelines
· Make your site more accessible for users with disabilities
You don’t need to be an advanced search engine optimization expert (SEO) to use this app. Website Checker can help you put your time back into other elements of your business.
How It Works
Website Checker is easy to use. You simply enter the website URL you want to monitor and click “Check.”
It’s easy to begin using the Website Checker app. Just put the URL for the site you want to monitor and hit the green “Check” button to the right.
Once the tool has had the chance to comb through the website provided, you will get a list of checks broken down into different segments of website optimization.
The Website Checker tool breaks down the various checks it performs into different segments of website optimization. The app makes it easy to determine what checks were passed or failed and from what type of device (mobile or desktop).
Better yet, you can get tons of details on correcting failed checks and capitalizing on performance opportunities. The app even breaks down the performance metrics of each segment into mobile and desktop performance.
Build a Great Website With Less Effort
Website Checker allows you to get the most from your digital marketing investment while saving you time that you can pour back into building up your business.
