Media, files and embed code
Add an alt (alternative text) tag to every image. Keep in mind:
- If an image is a link, make sure the alt tag for the image describes the function of the link.
- For images that are strictly decorative the alt tag should be empty.
Make sure the page does NOT contain repeatedly flashing images or a strobe effect.
Remember that screen readers cannot read PDF files or images. To ensure visitors can read your information include it on the page as actual text, not an image or file.
Screen readers convert web sites into audio so people can listen to the information on the pages and navigate through the website.
Video and Audio
There are three main methods that help make videos and audio accessible to everyone: captions, transcripts and audio descriptions.
Also, be sure to add an alt tag to every video and audio file.
Creating content on the page is always better for accessibility than uploading PDFs, PowerPoint presentations or other documents. If you must upload a file, make your file as accessible as possible.
Improving the accessibility of files
- Learn more about pdf accessibility
- Advice from Google: Make your Google document or presentation accessible
- Advice from Microsoft: Make your Excel spreadsheet accessible
If you do upload or link to a file, make sure you title it appropriately so a Screen Reader knows what the file is.
File names should be well defined, clearly describing the contents. For example, instead of "Doc1" you might name your file "DressCode-2016."
Add content from PDFs, PowerPoint presentations and other documents directly onto the page. Embedded files cannot be read by screen readers. See Files section above.