The HTML <h1>–<h6> elements represent six levels of section headings. <h1> is the highest section level and <h6> is the lowest.
| Content categories | Flow content, heading content, palpable content. | 
|---|---|
| Permitted content | Phrasing content. | 
| Tag omission | None, both the starting and ending tag are mandatory. | 
| Permitted parents | Any element that accepts flow content; don't use as a child of <hgroup>element, it is now deprecated | 
| Permitted ARIA roles | tab,presentation | 
| DOM interface | HTMLHeadingElement | 
Attributes
These elements include the global attributes.
The align attribute is obsolete; don't use it.
Usage notes
- Heading information may be used by user agents, for example, to construct a table of contents for a document automatically.
- Do not use lower levels to decrease heading font size: use the CSS font-sizeproperty instead.
- Avoid skipping heading levels: always start from <h1>, next use<h2>and so on.
- With the <section>element, you should consider avoiding using <h1> more than once on a page; by convention and for accessibility, it's used for the page's displayed title, with all headings below starting with<h2>. When using sections, you should use one<h1>per section. See "Defining sections" in Using HTML sections and outlines for more information.
Examples
All headings
The following code shows all the heading levels, in use.
<h1>Heading level 1</h1> <h2>Heading level 2</h2> <h3>Heading level 3</h3> <h4>Heading level 4</h4> <h5>Heading level 5</h5> <h6>Heading level 6</h6>
Here is the result of this code:
Example page
The following code shows a few headings with some content under them.
<h1>Heading elements</h1> <h2>Summary</h2> <p>Some text here...</p> <h2>Examples</h2> <h3>Example 1</h3> <p>Some text here...</p> <h3>Example 2</h3> <p>Some text here...</p> <h2>See also</h2> <p>Some text here...</p>
Here is the result of this code:
Specifications
| Specification | Status | Comment | 
|---|---|---|
| WHATWG HTML Living Standard The definition of '<h1>, <h2>, <h3>, <h4>, <h5>, and <h6>' in that specification. | Living Standard | Â | 
| HTML5 The definition of '<h1>, <h2>, <h3>, <h4>, <h5>, and <h6>' in that specification. | Recommendation | Â | 
| HTML 4.01 Specification The definition of '<h1>, <h2>, <h3>, <h4>, <h5>, and <h6>' in that specification. | Recommendation | Â | 
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari | 
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 1.0 (1.7 or earlier) | (Yes) | (Yes) | (Yes) | 
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | 
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 1.0 (1.0) | (Yes) | (Yes) | (Yes) | 
See also
Document Tags and Contributors
    
    Tags: 
    
  
                    
                       Contributors to this page: 
        Sheppy, 
        sideshowbarker, 
        lreed, 
        erikadoyle, 
        slimsag, 
        Ende93, 
        TylerH, 
        teoli, 
        Sebastianz, 
        IanRamosC, 
        wbamberg, 
        kscarfone, 
        jswisher, 
        thomaspark, 
        justleroy, 
        jenoziggy77, 
        ethertank, 
        tregagnon, 
        medicdude, 
        Potappo, 
        cers, 
        McGurk, 
        hobophobe, 
        fscholz, 
        PablO
                    
                    
                       Last updated by:
                      Sheppy,