---
title: id
slug: Web/SVG/Attribute/id
tags:
  - SVG
  - SVG Attribute
browser-compat: svg.attributes.core.id
---
{{SVGRef}}

The **`id`** attribute assigns a unique name to an element.

You can use this attribute with any SVG element.

## Example

```html
<svg width="120" height="120" viewBox="0 0 120 120" xmlns="http://www.w3.org/2000/svg">
  <style type="text/css">
    <![CDATA[
      #smallRect {
        stroke: #000066;
        fill: #00cc00;
      }
    ]]>
  </style>

  <rect id="smallRect" x="10" y="10" width="100" height="100" />
</svg>
```

{{EmbedLiveSample("Example", "120", "120")}}

## Usage notes

<table class="properties">
  <tbody>
    <tr>
      <th scope="row">Value</th>
      <td>&#x3C;id></td>
    </tr>
    <tr>
      <th scope="row">Default value</th>
      <td><em>None</em></td>
    </tr>
    <tr>
      <th scope="row">Animatable</th>
      <td>No</td>
    </tr>
  </tbody>
</table>

*   \<id>
    *   : Specifies the element's ID. The ID must be unique within the node tree, must not be an empty string, and must not contain any whitespace characters.

        > **Note:** You should avoid the use of `id` values that would be parsed as an SVG view specification (e.g., `MyDrawing.svg#svgView(viewBox(0,200,1000,1000))`) or a basic media fragment when used as a URL target fragment.

        It must be valid in XML documents. A stand-alone SVG document uses XML 1.0 syntax, which specifies that valid IDs only include designated characters (letters, digits, and a few punctuation marks), and do not start with a digit, a full stop (.) character, or a hyphen-minus (-) character.

## Specifications

<table class="no-markdown">
  <thead>
    <tr>
      <th scope="col">Specification</th>
      <th scope="col">Status</th>
      <th scope="col">Comment</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>
        {{SpecName("SVG2", "struct.html#IDAttribute", "id")}}
      </td>
      <td>{{Spec2("SVG2")}}</td>
      <td>Defines the allowed values in more detail.</td>
    </tr>
    <tr>
      <td>
        {{SpecName("SVG1.1", "struct.html#IDAttribute", "id")}}
      </td>
      <td>{{Spec2("SVG1.1")}}</td>
      <td>Initial definition</td>
    </tr>
  </tbody>
</table>

## Browser compatibility

{{Compat}}

## See also

*   [HTML `id`](/en-US/docs/Web/HTML/Global_attributes/id)
*   {{SVGAttr("class")}}
