Provide ALT attributes on images used as submit buttons
Make sure images used as submit buttons have ALT attribute values describing their functions
Images used as submit buttons provide end users with critical call to actions, and help them understand the different options made available. As such, they require descriptive text labels that clearly indicate the buttons’ function. As the function conveyed is essential to understanding the buttons’ purpose, this information needs to be reliably interpreted by assistive technologies so all users, regardless of disabilities, can act upon it.
To do so, simply describe the function of the image – [...]