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# Authoring Accessible Documents Images and Videos

This section provides guidance and resources for improving the accessibility of documents you author and share via Amazon products to those with disabilities.

## Guidance for authoring accessible documents

When authoring documents such as Word, Excel, PowerPoint, or PDF documents, be sure to use headings and sections to structure your documents, provide text alternatives for images, and check your document for accessibility by using the authoring applications accessibility checker. The following resources provide guidance on authoring techniques for creating accessible documents:

- Accessible Office Document Project
- WebAIM - Creating Accessible Documents
- DIAGRAM Center’s Accessible Math

## Guidance for creating accessible images

In order for screen readers to describe images in a document, an alternative text description must be added. Image files such as .JPG, .BMP, .GIF, and .PNG are typically made accessible by adding this "alt" text when the images are placed in a document. The following resources provide guidance on how to describe images:

- Web Accessibility Initiative Images Tutorial
- DIAGRAM Center’s Image Description

## Guidance for authoring accessible videos

Recommended authoring techniques to make videos accessible include adding captions and audio descriptions. Captions are the text version of the video’s audio that is displayed on screen for those who cannot hear the audio. Audio descriptions describe scenes and information in the video that are not spoken for blind and visually impaired viewers. The following resources provide guidance on how to add captions and audio descriptions to videos:

- NCAM’s media accessibility guidelines
- WebAIM - Captions, Transcripts, and Audio Descriptions
- Captions for Amazon Video Direct

## Guidance for 3D Printing

The following resource provides guidance and considerations for 3D printing and accessibility. Topics include 3D printing for accessible materials in schools, printing of braille with 3D printers, and 3D printed teaching aids.

- DIAGRAM Center on 3D Printing, Tactiles and Haptics

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