Ally can provide alternative formats for these file types:
PDF files
Microsoft® Word files
Microsoft® Powerpoint® files
OpenOffice/LibreOffice files
Uploaded HTML files
These alternative formats can be generated:
OCR’d version (for scanned documents)
Tagged PDF (currently for Word, Powerpoint and OpenOffice/LibreOffice files)
Semantic HTML
Audio
ePub
Electronic Braille
When a particular alternative format for a particular content item is requested for the first time, Ally generates this on demand. In most cases, this completes within 1-2 minutes.
As soon as it has been generated, the alternative format is downloaded. Ally then also caches the result, so any additional requests for the same alternative format can be served and downloaded from cache immediately.
Ally currently only processes instructional content. For example, content added by someone with edit permissions in the course, such as the instructor or instructional designer. Ally currently does not process student content or student submissions.
The OCR’d version is made available as a tagged PDF.
The audio alternative format is made available as a downloadable MP3 file. We also add some of the extracted semantic information into the speech, which adds additional structure to the audio and makes it easier to listen to.
Ally uses Braille Ready File (.brf) as the electronic Braille format. The braille code used depends on the language the document is in. For English documents, Ally uses Grade 2 Unified English Braille (contracted).
More on Unified English Braille on the UKAAF website
The Braille Ready File (.brf) format can be used for both electronic braille displays and braille embossers (printers).
You still need to check whether a specific Braille embosser/printer supports the .brf format.
More on BRF on the Accessible Instructional Materials website