Site page text webpart Header 1 missing

Hi BLim510 

The problem you are experiencing is a known issue with SharePoint Online. The Header 1 option is missing from the text webpart dropdown menu. This issue affects all tenants, both Teams and Communications sites.

There are a few things you can do to work around this issue:

1. If you need to use Header 1 style for your text, you can use the <h1> tag in the text webpart. This will create a heading with the Header 1 style, even though the option is not available in the dropdown menu.
2. You can use the TOC webpart to create a table of contents for your page. The TOC webpart will automatically use Header 1 style for the main headings on your page.
3. You can wait for Microsoft to fix this issue. Microsoft is aware of the problem and is working on a fix.

Here are the steps on how to use the <h1> tag in the text webpart:

1. Open the text webpart on your page.
2. Click in the text area and type the text you want to use for your heading.
3. In the text editor, click on the "HTML" button.
4. In the HTML editor, add the following tag before the text you want to use for your heading:

<h1>

1. After the text, add the following tag:

</h1>

1. Click on the "Text" button to switch back to the text editor.
2. Your heading will now be formatted with the Header 1 style.

Here are the steps on how to use the TOC webpart to create a table of contents for your page:

1. Add the TOC webpart to your page.
2. In the TOC webpart, click on the "Settings" button.
3. In the settings, select the "Use Header 1" option.
4. Click on the "Save" button.
5. Your TOC webpart will now automatically use Header 1 style for the main headings on your page.

I hope this helps!