BioDigital believes all humans should be able to understand their health, and we built the BioDigital Human platform to help them do just that.
Because we want to empower all of our users to have an effective and accessible learning experience, we have built our learner-facing product, the Human Viewer, to support Web Content Accessibility Guidelines (WCAG) version 2.2 standards as described in the report below, which is based on the Voluntary Product Accessibility Template (VPAT®).
Need a PDF version of this report? Download it here.
BioDigital Accessibility Conformance Report, WCAG 2.2 Edition
(Based on VPAT® Version 2.5Rev)
Name of Product/Version
BioDigital Human Viewer (February 2026)
Report Date
February 2026
Product Description
The BioDigital Human platform enables users to select and customize interactive 3D models of human anatomy, physiology, disease and treatments and publish these directly into digital resources. Our 3D models are packaged in the BioDigital Human Viewer, or Viewer. The Viewer is a small, web-based application that can be published as a standalone, unrestricted webpage and embedded into a website or application via an iframe.
Contact Information
For any questions about the accessibility of this product, please contact the BioDigital Customer Experience team at support@biodigital.com.
Notes
- BioDigital’s library of 3D models have not been evaluated or updated to meet the WCAG requirements. This report is specific to the Human Viewer, the user interface that displays and allows users to interact with the 3D models.
- For the most accessible experience, we advise enabling the Information Panel and Search tool in your published Human Viewer.
- The Information Panel provides titles and descriptions for each chapter of our 3D models.
- The Anatomy Search tool provides both Tree and List views, which are screen reader-compatible and enable users to select/highlight, hide, and isolate anatomical structures in the 3D model.
- You can find more information about each of these options on our Help Center.
Evaluation Methods Used
BioDigital’s in-house engineers and product managers tested the Human Viewer product and documented their findings in this VPAT. This team thoroughly reviewed the product for conformance to the Web Content Accessibility Guidelines 2.2 Level A and Level AA using a variety of manual testing techniques, assistive technologies, and the exclusive use of the keyboard to operate the product.
Applicable Standards/Guidelines
This report covers the degree of conformance for the following accessibility standards/guidelines:
| Standard/Guideline | Included In Report |
| Web Content Accessibility Guidelines 2.2 |
Level A (Yes) Level AA (Yes) Level AAA (No) |
Terms
The terms used in the Conformance Level information are defined as follows:
- Supports: The functionality of the product has at least one method that meets the criterion without known defects or meets with equivalent facilitation.
- Partially Supports: Some functionality of the product does not meet the criterion.
- Does Not Support: The majority of product functionality does not meet the criterion.
- Not Applicable: The criterion is not relevant to the product.
- Not Evaluated: The product has not been evaluated against the criterion. This can be used only in WCAG Level AAA.
WCAG 2.2 Report
Note: When reporting on conformance with the WCAG 2.2 Success Criteria, they are scoped for full pages, complete processes, and accessibility-supported ways of using technology as documented in the WCAG 2.2 Conformance Requirements.
Table 1: Success Criteria, Level A
| Criteria | Conformance Level | Remarks and Explanations |
| 1.1.1 Non-text Content (Level A) | Supports | Each 3D model view (or "chapter") includes an alt text field, enabling content creators to provide screen reader-accessible descriptions of the visual content. Chapter titles and descriptions may also be used to convey additional context. |
| 1.2.1 Audio-only and Video-only (Prerecorded) (Level A) | Partially Supports | There are currently no dedicated fields for alternative descriptions when pre-recorded audio or video is present, but text placed above or below the audio or video in the chapter description may serve as an alternative. |
| 1.2.2 Captions (Prerecorded) (Level A) | Not Applicable | Any media presented in the product is not synchronized with the animation, so this requirement is not applicable. |
| 1.2.3 Audio Description or Media Alternative (Prerecorded) (Level A) | Not Applicable | Any media presented in the product is not synchronized with the animation, so this requirement is not applicable. |
| 1.3.1 Info and Relationships (Level A) | Supports | All content uses semantic markup or ARIA attributes. |
| 1.3.2 Meaningful Sequence (Level A) | Supports | The text presented in the product is presented in an order that does not change the meaning of the content. |
| 1.3.3 Sensory Characteristics (Level A) | Supports | Instructions provided for understanding and operating content do not rely solely on sensory characteristics of components such as shape, color, size, visual location, orientation, or sound. |
| 1.4.1 Use of Color (Level A) | Partially Supports |
Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element. Exception: Select Anatomy in 3D quiz question type. |
| 1.4.2 Audio Control (Level A) | Supports | When present, audio can be muted or unmuted at any time. |
| 2.1.1 Keyboard (Level A) | Partially Supports |
All major functionality of the content is operable through a keyboard interface. Press the “?” key to open the keyboard shortcut table. Exception: Select Anatomy in 3D quiz question type. |
| 2.1.2 No Keyboard Trap (Level A) | Supports | Focus can be moved away from all user interface controls using only a keyboard interface. |
| 2.1.4 Character Key Shortcuts (Level A 2.1 only) | Does Not Support (Pending) | The product does not currently offer users a way to disable keyboard shortcuts. |
| 2.2.1 Timing Adjustable (Level A) | Not Applicable | No content presented in this product requires a time limit. |
| 2.2.2 Pause, Stop, Hide (Level A) | Supports | The user can pause or replay animated 3D models at any time. |
| 2.3.1 Three Flashes or Below Threshold (Level A) | Partially Supports | The product’s user interface does not contain any elements that flash. There is a subset of 3D models that require some flashing to effectively visualize a health concept (e.g., seizure). |
| 2.4.1 Bypass Blocks (Level A) | Supports |
The product:
|
| 2.4.2 Page Titled (Level A) | Supports | The product’s page title reflects the current chapter title. |
| 2.4.3 Focus Order (Level A) | Supports | All of the focusable components in the product receive focus in an order that preserves meaning and operability. |
| 2.4.4 Link Purpose (In Context) (Level A) | Supports | Hyperlinks included in the product are written such that the purpose of the link can be determined by the link text alone. |
| 2.5.1 Pointer Gestures (Level A 2.1 only) | Supports | All gestures, including 3D navigation, have a single pointer alternative. |
| 2.5.2 Pointer Cancellation (Level A 2.1 only) | Supports | 3D navigation gestures requiring completion on the down-event (pan and rotate) can be reversed via "Return to Starting Position." Keyboard shortcuts serve as an alternative. |
| 2.5.3 Label in Name (Level A 2.1 only) | Supports | All icon-based buttons have tooltips and ARIA labels. |
| 2.5.4 Motion Actuation (Level A 2.1 only) | Not Applicable | The product does not include functionality that can be operated by device motion or user motion. |
| 3.1.1 Language of Page (Level A) | Supports | The default human language of the product is tagged with a language attribute that can be programmatically determined. |
| 3.2.1 On Focus (Level A) | Supports | When any user interface component receives focus, it does not initiate a change of context. |
| 3.2.2 On Input (Level A) | Supports | Changing the setting of any user interface component does not automatically cause a change of context unless the user has been advised of the behavior before using the component. |
| 3.2.6 Consistent Help (Level A 2.2 only) | Not Applicable | The product is a single page. |
| 3.3.1 Error Identification (Level A) | Not Applicable | The product does not contain any forms, with the exception of Search, which does not apply. |
| 3.3.2 Labels or Instructions (Level A) | Not Applicable | The product does not contain any forms, with the exception of Search, which does not apply. |
| 3.3.7 Redundant Entry (Level A 2.2 only) | Not Applicable | The product does not use forms. |
| 4.1.2 Name, Role, Value (Level A) | Supports | ARIA-label and ARIA-labeledby attributes are used to describe elements on the page. |
Table 2: Success Criteria, Level AA
| Criteria | Conformance Level | Remarks and Explanations |
| 1.2.4 Captions (Live) (Level AA) | Not Applicable | BioDigital does not offer live content. |
| 1.2.5 Audio Description (Prerecorded) (Level AA) | Supports | The product does not include video. When audio is present, the chapter titles and descriptions serve as an alternative audio description. |
| 1.3.4 Orientation (Level AA 2.1 only) | Supports | Both portrait and landscape orientations are supported. |
| 1.3.5 Identify Input Purpose (Level AA 2.1 only) | Not Applicable | No user information is collected via the product. |
| 1.4.3 Contrast (Minimum) (Level AA) | Supports | All small text elements meet the 4.5:1 contrast ratio requirement, and large text elements meet the 3:1 contrast ratio requirement. |
| 1.4.4 Resize text (Level AA) | Supports | All user interface components and text can be resized 200% without loss of content or functionality, as these components automatically scale up with the browser. The 3D model will adjust to fit within the updated canvas size. |
| 1.4.5 Images of Text (Level AA) | Not Applicable | Images of text are not used. |
| 1.4.10 Reflow (Level AA 2.1 only) | Supports | The user interface is responsive from 320x256 pixels and does not require horizontal scrolling of the page. |
| 1.4.11 Non-text Contrast (Level AA 2.1 only) | Supports | All non-text user interface components meet the 3:1 contrast ratio requirement. Tooltips have been enabled on all user interface components. 3D models have not been assessed for contrast. |
| 1.4.12 Text Spacing (Level AA 2.1 only) | Supports | No loss of content or functionality occurs by modifying the text spacing or other style property. |
| 1.4.13 Content on Hover or Focus (Level AA 2.1 only) | Supports | All user interface components are dismissible via the "esc" key. |
| 2.4.5 Multiple Ways (Level AA) | Not Applicable | The product is a single webpage. |
| 2.4.6 Headings and Labels (Level AA) | Supports | Headings and labels describe the topic or purpose of the interface the user is on. |
| 2.4.7 Focus Visible (Level AA) | Supports | Keyboard focus is always visible when the user tab-indexes through the user interface. |
| 2.4.11 Focus Not Obscured (Minimum) (Level AA 2.2 only) | Supports |
Focus is not obscured.
|
| 2.5.7 Dragging Movements (Level AA 2.2 only) | Supports | Dragging movements for essential functions (i.e., rotating the 3D model) have fallback support through keyboard interactions. |
| 2.5.8 Target Size (Minimum) (Level AA 2.2 only) | Supports | All targets not subject to exception are larger than 24 pixels. |
| 3.1.2 Language of Parts (Level AA) | Supports | The default human language of the product is tagged with a language attribute that can be programmatically determined. |
| 3.2.3 Consistent Navigation (Level AA) | Not Applicable | The product is a single webpage. |
| 3.2.4 Consistent Identification (Level AA) | Not Applicable | The product is a single webpage. |
| 3.3.3 Error Suggestion (Level AA) | Not Applicable | The product does not contain any forms, with the exception of Search, which does not apply. |
| 3.3.4 Error Prevention (Legal, Financial, Data) (Level AA) | Not Applicable | The product does not contain any forms, with the exception of Search, which does not apply. |
| 3.3.8 Accessible Authentication (Minimum) (Level AA 2.2 only) | Not Applicable | The product does not require authentication. |
| 4.1.3 Status Messages (Level AA 2.1 only) | Partially Supports | A user is notified when they complete select actions, including undo, redo, zoom in, zoom out, and interaction with the Anatomy Tree. |
Legal Disclaimer (BioDigital)
The information provided in this document is in good faith based on the Human Viewer at the time of the review and does not represent a legally binding claim. This report is subject to change without notice, but we will make our best efforts to keep it up to date as we make updates and improvements to the Viewer. Keep an eye on our What's New page for all the latest enhancements, and please contact us to report any accessibility errors or for re-evaluation and correction, if necessary.
Voluntary Product Accessibility Template® and VPAT® are registered service marks of the Information Technology Industry Council (ITI).