Yes, there are several free web development courses that offer certificates upon completion. Here are a few that you may find helpful:
1. FreeCodeCamp - This is a popular interactive learning platform that teaches web development, including HTML, CSS, JavaScript, and more. They offer a certificate upon completion of their fullstack curriculum.
2. edX - This is a well-known platform that offers free online courses from top universities like Harvard, MIT, and more. They offer a variety of web development courses, including Front-End Web Development, Full-Stack Web Development, and more.
3. Coursera - This platform offers free online courses from universities and other institutions, including web development courses from top institutions like Duke University, University of Michigan, and more.
4. Codecademy - This is an interactive online learning platform that teaches web development, including HTML, CSS, JavaScript, and more. They offer a certificate of completion for their ρáíd Pro version, but their free courses still offer valuable learning opportunities.
5. Udacity - This is another online learning platform that offers free web development courses, including Front-End Web Developer, Full-Stack Web Developer, and more. They offer a certificate of completion for their ρáíd Nanodegree programs, but their free courses still provide valuable learning opportunities.
I hope this helps!