Alternative Content


Competentum has built a team of experts specializing in writing alternative texts, transcripts, closed captions, and audio descriptions for accessibility of such content as images, prerecorded audio, video, and synchronized media.

Alt Texts for Images and Animations

Alt Texts for Images & Animations

  • Competentum has experience in writing text alternatives (short and long, static and dynamic) for images on a number of disciplines: physics, engineering, mathematics, biology, anatomy, chemistry, economics, geology, and psychology.
  • We have built our own expertise and best practices on writing good alt texts. However, we can follow a client’s specific rules and practices, if needed.
Closed Captions, Transcripts, and Audio Descriptions

Closed Captions, Transcripts, & Audio Descriptions

All audio-only and video-only content – if one is not already an alternative of the other – requires an alternative version (most commonly, text alternatives) to be accessible to visually and auditory impaired people.

All multimedia content needs to have closed captions and - depending on the level of WCAG 2.0/2.1 support - either a transcript or audio description, or both.

  • Closed captions (do not confuse with subtitles) are useful for people who cannot hear and are synchronized with the video, depicting not only the narrator’s speech, but also all important sounds and information about speakers.
  • Transcript (or extended transcript) is a text document containing the narrator’s text and the description of what is on the screen while the narrator is speaking. Transcripts can be useful for both visually and auditory impaired users.
  • Audio descriptions are a fancier way for visually impaired people to “watch” a video than simply having an alternative textual version, like a transcript. Audio descriptions of visual content are usually recorded in the pauses between narrator’s speaking.

If your audio- or video-only or multimedia is not accessible, Competentum can fix it for you.