Does SVG have the ALT attribute?
HTML5 now allows <svg> and <math> markup with an HTML document without depending on external namespaces (decent overview here). Both have their own alt -attribute analogs (see below) which are effectively ignored by today’s screen-reader software.
Are SVGs accessible?
File size – The relative “lightness” of SVG code in a world where bandwidth and performance matter more than ever. Accessibility – Markup can be added to the SVGs directly so more information can be added within the image itself – which is helpful for people using assistive technology devices such as screen readers.
Do screen readers read SVG text?
Yes, Screen readers can read an SVG as long as that screen reader has been coded to read a SVG. SVGs have a number of accessibility tags which can be used and read by screen readers to describe what the SVG is representing or is meant to show.
Do you need alt text for all images?
You should review alt text like you would any other content on the page. Don’t add alt text to every image. You should add alt text to most images on a webpage for the sake of SEO, UX, and accessibility — however, there are exceptions.
Can you add aria label to SVG?
The best support for SVGs is to display them inline. You must use aria-labelledby as the first choice by referencing the “title” and the “desc” (avoid aria-describedby for the “desc”, still bad support) to ensure maximum support.
How do I make SVG focusable?
# Making SVG elements focusable
- <svg focusable=”false” tabindex=”0″> is considered inert.
- <svg focusable=”true” tabindex=”-1″> is considered keyboard focusable.
What are aria roles?
ARIA roles provide semantic meaning to content, allowing screen readers and other tools to present and support interaction with object in a way that is consistent with user expectations of that type of object.
What is inline SVG?
Inline SVG simply refers to SVG markup that is included in the markup for a webpage.
How does aria hidden work?
The aria-hidden attribute can be used to hide non-interactive content from the accessibility API. Adding aria-hidden=”true” to an element removes that element and all of its children from the accessibility tree.
What is a viewBox SVG?
The viewBox attribute defines the position and dimension, in user space, of an SVG viewport. The value of the viewBox attribute is a list of four numbers: min-x , min-y , width and height .
What is SVG class in HTML?
The svg element is a container that defines a new coordinate system and viewport. It is used as the outermost element of SVG documents, but it can also be used to embed an SVG fragment inside an SVG or HTML document.
How does SVG work?
SVG or Scalable Vector Graphics is a web standard for defining vector-based graphics in web pages. Based on XML the SVG standard provides markup to describe paths, shapes, and text within a viewport. The markup can be embedded directly into HTML for display or saved to a . svg file and inserted like any other image.
When should you not use alt text?
Including alt text for decorative images or items
Decorative items such as dividers or design items that don’t provide additional context or content don’t need alt text. They don’t add to the information a user needs and they make little sense, or are unnecessary, when read with a screen reader.
Why is alt text important?
Fundamentally, the purpose of alt text is to improve accessibility by describing what an image is showing to visitors who do not have the ability to see them. However, it also helps search engine crawlers and so improves SEO.
What is the best way to use alt text?
Tips for writing ‘good’ alt text
- Be specific, and succinct. Describe the content of the image without editorialising. …
- Never start with “Image of …” or “Picture of …” …
- Use keywords sparingly. …
- Include text that’s part of the image. …
- Don’t repeat yourself. …
- Don’t add alt text to ‘decorative’ images.