# Bold Use this extension to render text in **bold**. If you pass ``, `` tags, or text with inline `style` attributes setting the `font-weight` CSS rule in the editor’s initial content, they all will be rendered accordingly. Type `**two asterisks**` or `__two underlines__` and it will magically transform to **bold** text while you type. ::: warning Restrictions The extension will generate the corresponding `` HTML tags when reading contents of the `Editor` instance. All text marked bold, regardless of the method will be normalized to `` HTML tags. ::: ## Options | Option | Type | Default | Description | | ------ | ------ | ------- | -------------------------------------------- | | class | string | – | Add a custom class to the rendered HTML tag. | ## Commands | Command | Options | Description | | ------- | ------- | --------------- | | bold | — | Mark text bold. | ## Keyboard shortcuts * Windows & Linux: `Control` + `B` * macOS: `Command` + `B` ## Source code [packages/extension-bold/](https://github.com/ueberdosis/tiptap-next/blob/main/packages/extension-bold/) ## Usage