Accessibility is central to creating meaningful and inclusive learning experiences. As an Embed partner, you play an essential role in how accessibility principles are put into practice—both in the way you implement Coassemble’s course creation tools within your platform and in how you guide your customers to use them.

Accessibility is central to creating meaningful and inclusive learning experiences. As an **Embed partner**, you play an essential role in how accessibility principles are put into practice—both in the way you implement Coassemble’s course creation tools within your platform and in how you guide your customers to use them.

## Overview

Coassemble has been independently verified as conforming to **WCAG 2.2 Level AA** standards. 

Accessibility is a **shared responsibility**. Coassemble provides an accessible foundation for the learner experience, but accessible outcomes also depend on partner implementation decisions and course creators following best practices.

## Shared responsibility: Coassemble, you, and your users

* **Coassemble**: Provides the underlying course creation tools, designed with WCAG principles in mind.
* **You (Embed partner)**: Your implementation decisions (e.g. navigation, shell UI, theme overrides) directly impact accessibility outcomes.
* **Your users (course creators)**: They must apply accessibility best practices when building courses (e.g. adding alt text, maintaining contrast, choosing screen types carefully).

## Key accessibility practices for course creators

### 1) Add alternative text (alt text) for images

Images can bring content to life, but for learners who use screen readers those visuals need to be described in text form. **Alt text** provides a written description of an image so learners who cannot see it can still understand its purpose and meaning. Without alt text, a screen reader may skip the image or read out the file name, creating a poor learning experience.

Best practices:

* **Be clear and concise**: Keep alt text under **125 characters** so it can be quickly read by screen readers.
* **Describe the purpose, not just the appearance**: Instead of saying “a chart,” write “bar chart showing sales growth over three years.”
* **Avoid unnecessary phrases**: Don’t start with “image of” or “picture of”—screen readers already announce that it’s an image.
* **Include essential text**: If the image contains text that isn’t repeated elsewhere, include it in the alt text.
* **Leave decorative images blank**: Don’t add alt text for purely decorative images so screen readers can skip them.
* **Test for context**: Ask yourself, “If this image were removed, would learners still get the same information?” If not, the missing context belongs in the alt text.

### 2) Ensure high contrast for text and UI

Color and contrast play a critical role in making digital content readable for everyone. Learners with low vision or color blindness may struggle to read text if it doesn’t stand out clearly against its background. Even well-designed content can become inaccessible if contrast isn’t considered.

Best practices:

* **Start with defaults**: Coassemble themes are built with sufficient contrast, so encourage customers to use presets wherever possible.
* **Check custom colors**: If they override default theme colors, they must manually check the contrast between text and background to ensure it follows WCAG guidance.
* **Use reliable tools**: Free resources like **WebAIM’s Contrast Checker** help confirm compliance quickly.

### 3) Choose accessible screen types

Different screen types can create different learning experiences—but they don’t all interact with assistive technologies in the same way. Choosing the right screen type helps ensure content remains accessible to all learners.

Guidance:

* **Standard screens**: All standard Coassemble screen types are compatible with screen readers, so they can be used confidently.
* **Hotspot screens (use caution)**: Hotspots place interactive labels on images, which may not always be interpreted clearly by screen readers. If critical information is contained in a hotspot, ensure it’s also provided in text elsewhere.
* **Embed screens (third-party content)**: The Embed screen allows third-party content (e.g. videos, interactive tools) to be included. Since accessibility varies widely across third-party providers, customers must check each tool for compatibility with screen readers and other assistive technologies before embedding.
* **Provide alternatives**: If a particular screen type or embedded tool cannot be made accessible, offer the same information in an alternative format (e.g. a text summary or downloadable file).

### 4) Ensure video content has captions

Video content is a powerful way to engage learners, but it also needs to be accessible. Learners may rely on captions to access video-based learning.

How to support captioning:

* When embedding videos from platforms like **YouTube** or **Vimeo**, use their built-in captioning tools.
* Upload caption files for the highest accuracy, or use auto-generated captions (always review and correct errors).
* **Always enable captions** for any instructional video.
* Keep captions synchronized with the video, and make sure they convey spoken content accurately, including important sounds (e.g. “\[applause\]” or “\[music\]”).
* Consider providing **transcripts** for video and audio content.

Important note:

* Coassemble does **not** generate or manage captions for videos uploaded directly to the platform. If users want to rely on YouTube/Vimeo captioning, they must **caption videos in the source platform before embedding** them in a course.

### 5) Avoid placing text inside images

It’s important that text is provided in a format assistive technologies can read. Any text embedded inside an image (for example, screenshots of slides, infographics, or banners with text) typically won’t be detectable by screen readers.

Best practices:

* Avoid uploading images that contain large blocks of text.
* Place text directly in the course content where assistive technology can read it.
* If using an image with essential text (e.g. a chart or labeled diagram), provide that text in the **alt text** or as a supporting description alongside the image.

## How Embed partners can support customers

* **Educate** customers on accessibility best practices.
* **Highlight** how implementation decisions (UI, color schemes, navigation) impact accessibility.
* **Provide resources** such as WCAG guidance and accessibility testing tools.
* **Encourage testing** with assistive technologies before course launch.

## Summary

Coassemble’s tools are designed with WCAG principles in mind and have been independently verified for **WCAG 2.2 Level AA** conformance. Accessible outcomes depend on shared responsibility across Coassemble, Embed partners, and course creators. By following the practices above—alt text, contrast, accessible screen choices, captions, and avoiding text-in-images—you can help deliver inclusive learning experiences for all learners.

Accessibility guide

Resources specifically for Embed (previously referred to as Headless course creation). These are resources that previously lived on the Headless Resources Hub.

Coassemble Embed Partner Security, Data Protection & AI FAQ

Default usage caps for clients

Managing tenant caps

AI and Data Security for Coassemble Embed Partners

Coassemble vs. Articulate: Feature comparison guide for course authoring teams

Coassemble is WCAG 2.2 Level AA Conformant

Competitor analysis

Designing effective microlearning courses

How to access and interpret the Headless usage report

How to handle competitor objections when positioning your Embed solution

Guide to pricing models for Coassemble Embed and key competitor benchmarks

Sales enablement guide: Driving user adoption

Customer testimonials for Coassemble Embed course creation (sales enablement)

Our mission: Barrier-free knowledge transfer (partner-friendly positioning language)

Getting started guide

How to communicate Coassemble feature releases to your customers 

How to migrate courses from other authoring tools into Coassemble Embed

Guide to releases

Curate

AI Create

Customize

Learner experience

Embed Partners

Release notes

General

What is Coassemble?

Coassemble terminology explained

Accessing the login page

Getting to know your Coassemble workspace

Build the business case for Coassemble

Getting started: Common questions

How do I sign up for a Coassemble account?

What file types can I transform into a course?

What is a screen?

What tone should I select?

What is a collection?

Can I use Coassemble as an LMS?

How to log in to your account

Getting started

Connecting to Google Drive or OneDrive

Convert a presentation into an online course

Your knowledge

Usage limits

Identified Recipients and Anonymous Recipients

Logging in with Microsoft

Folders

Creators

Transfer ownership of your workspace

Configuring your email preferences

Common questions: Workspaces

How to delete a creator

Managing account, workspace, and billing settings

Organizing courses with folders

Your workspace & settings

How to upload custom fonts in Coassemble

How to save a legacy course theme

Brand kit: Saving pre-existing themes

How to apply Brand voice when generating courses

Brand voice

Asset library

Managing logos

How to create and configure themes

Managing and defaulting themes

Using the Brand kit

Brand Kit: A complete guide

How to edit video details

Brand kit

AI image generation

Generate a screen with AI

Refine with AI

Difference between transforming a document and converting a presentation

Coassemble's AI

Screens

Creating courses from scratch

Deleting courses

Duplicating courses

Enforce completion of videos

Generate a course with AI

The Finish screen

The Quiz screen

Transforming a document to a course

Translations

Images

Upload your videos to your course

Which screen should I use?

How do I create a course?

Common questions: Course creation

How to Upload Videos to Your Course

Narrating translations

Narration

Publishing

Loom integration

How to preview and review a course

Customizing course appearance with Themes

Managing and editing your course

Guide to AI Narration Tokens in Coassemble

Create & customize

Sharing course links & invitations

Collections: create, customize, share, and track learning paths

How to import a course from a template link

How to share your courses

Sharing courses with Slack

SCORM packages and translations

Exporting courses as SCORM

Common questions: Sharing

Template links

Email invitations

How to Add Your Coassemble Courses to Another Platform

How Coassemble tracks unique anonymous users

Sharing

How to filter Course insights by date range

Course insights

Link Insights

SCORM usage

Common Questions: Tracking Learners, Reporting, and Limits in Coassemble

Detailed Quiz results

Sentiment

Analyzing course-level Insights

Analyzing Collection-level Insights

Tracking content performance with Insights

Insights

Flow

Pulse

Embed Core

Embed Automate

Embed Partner

Overage, bands, and rates

Payments, billing, and subscriptions

Plans and advanced features

Explore best practices for sharing your knowledge.

Accessibility

Assessment: Best practice for quizzes

Best practices

SCORM files not loading

SCORM session errors on Apple devices

Why isn't my Embed screen working?

Common questions: Troubleshooting

What do I do if there is a bug?

Requesting a password reset link

Setting a new password

How to change or reset your password

Troubleshooting

SOC 2 compliance

Coassemble's approach to AI

AI & data security

Data security & AI

API keys

Passing identity (and tenant context) in embedded sessions

Notion

YouTube

Hubspot

Arcade

Vimeo

Unsplash

360Learning

aNewSpring

Docebo

Embed and Stripe: How to Sell Access Using Your Own Checkout and Coassemble Embed