Set your page title, description and language, then toggle the sections you want (Open Graph, Twitter card, favicons, CSS reset) and add any stylesheet or script paths. The full document builds live. Copy it or download it as an .html file.
A boilerplate is the minimal, correct starting structure every HTML5 page needs: the doctype, html/head/body tags, charset, viewport and title. This tool builds that skeleton plus optional SEO and social tags.
The optional reset applies sensible defaults, box-sizing: border-box, removes default margins, sets a base line-height, and makes images block-level and responsive, so your styling starts from a predictable baseline across browsers.
Open Graph and Twitter Card meta tags control how your page looks when shared on social media, defining the title, description and preview image. They are optional here and only added when you enable them.