Google provides a number of tools that can help in web designing. Here are some of the most popular ones :

1. Google Fonts : Google Fonts is a library of over 1,000 free, open-source fonts that can be easily integrated into web designs. The fonts are optimized for the web and can be used to improve the readability and design of a website. Google Fonts provides a wide variety of font options, from traditional serif and sans-serif fonts to more decorative and creative options.
2. Google PageSpeed Insights : PageSpeed Insights is a tool that analyzes a website’s performance and provides suggestions for improving its speed and usability. The tool provides a score for desktop and mobile performance, along with a list of specific suggestions for improvement. Suggestions can include optimizing images, reducing server response time, and minimizing render-blocking resources.
3. Google Analytics : Google Analytics is a powerful web analytics tool that provides insights into how visitors interact with a website. Web designers can use this tool to track user behavior, measure website traffic, and identify areas for improvement. Google Analytics provides detailed information on user demographics, behavior, and acquisition channels, as well as information on website performance and conversion rates.
4. Google Tag Manager : Google Tag Manager is a tool that allows web designers to manage website tags and tracking codes from a single interface. By using Google Tag Manager, web designers can easily add and update tracking codes without having to edit the website’s code directly. The tool provides a range of tag templates, as well as the ability to create custom tags, triggers, and variables.
5. Google Optimize : Google Optimize is a tool that allows web designers to run A/B tests and experiment with different design elements to improve website performance. By testing different versions of a website, web designers can identify the most effective design elements and make data-driven decisions about design changes. Google Optimize provides a simple, intuitive interface for creating and running tests, as well as detailed reporting on test results and statistical significance.

In conclusion, Google offers a range of tools that can be useful for web designers, from font libraries to web analytics tools. By using these tools, web designers can create more effective and user-friendly websites, optimize website performance, and make data-driven design decisions.