SEO glossary

What is the difference between meta titles and meta descriptions?

What are alt tags?

What is a robots.txt?

What is a sitemap?

What is a schema markup?

What is a favicon?

Does having a favicon help with my SEO?

What are internal links?

What are external links?

What is a no-follow link?

What is the difference between HTTP and HTTPS?

What does SSL mean and why is it important?

What are heading tags?