Comprehensive Guide: How to Test Websites with Screen Readers

Have you ever considered how a blind person surfs the internet? For the visually impaired, screen readers are essential assistive technologies that make digital content accessible. As developers, we have a social responsibility to ensure our websites and apps work seamlessly with these tools.

In this comprehensive 3000+ word guide, you’ll learn all about testing websites with screen readers. I’ll cover:

• What screen readers are and who uses them
• How screen reader users navigate websites
• Why accessibility and screen reader testing matters
• Step-by-step guide to testing sites hands-on
• Optimizing site experiences for screen reader users
• Common mistakes and best practices to follow

So let’s get started on understanding these assistive marvels better!

What are Screen Readers?

Screen readers are software programs that interpret visual information and convert it into either speech or braille output. They enable people with visual impairments to perceive and interact with digital interfaces non-visually.

The software reads aloud textual interface elements using a speech synthesizer and/or sends it to a braille display. It provides shortcuts and commands that enable complete control over navigation and input.

So while sighted users view site layouts visually and use a mouse to click buttons, screen reader users hear the underlying code read out sequentially and input via their keyboard.

Popular Screen Readers

There are many screen reading solutions available today, including both commercial software and free open-source options:

• NVDA – Popular open source screen reader for Windows.
• JAWS – Paid proprietary software with advanced functionality.
• VoiceOver – Built into Apple devices like Macs, iPhones and iPads.
• TalkBack – Android’s native screen reader since Android 4.0 Ice Cream Sandwich.
• Narrator – Microsoft‘s integrated screen reader for Windows.

While all screen readers interpret content sequentially, different programs may pronounce certain elements differently. So testing sites with top screen readers is key.

Who Uses Screen Readers?

There are approximately 253 million visually impaired people worldwide according to World Health Organization estimates. To access digital interfaces, majority depend on assistive technologies like screen readers.

But people with other disabilities also use screen readers for increased accessibility:

• Those with learning disabilities like dyslexia find it easier to listen to content.
• People with mobility issues who can’t use mouse/keyboard comfortably.
• Individuals on the autism spectrum who process verbal information better.

Really, anyone can benefit from screen readers to consume content more conveniently. I often use its read aloud feature when multitasking!

How Users Navigate Websites With Screen Readers

Blind people interact with screen readers completely via keyboards using the following techniques:

Sequential Navigation

Screen readers read page content sequentially word-by-word and line-by-line, starting from the top left. Users issue keyboard commands (see below) to navigate by elements like headings, links, buttons, form fields etc.

Text-to-Speech

As content gets focused during navigation, built-in speech synthesizers convert text strings into life-like audio representations. Users also adjust rate/pitch of speech as needed.

Common Screen Reader Commands

Here are some commonly used navigation keyboard shortcuts:

• H – Headings
• K and Shift + K – Links
• F – Form elements like text fields
• E – Buttons and controls
• C and Shift + C – Table cells

So someone might navigate via headings to get page structure overview, then skip between links and form elements as needed to consume content before proceeding.

Why Website Accessibility And Screen Reader Testing Matters

Social Responsibility

As developers, we have an ethical obligation to ensure everyone can access online content and services – regardless of disability or special need constraint.

Screen reader accessibility enables equal participation for the visually impaired in our digitally driven world.

Business Benefits

Accessible sites also make good business sense as an underserved audience segment representing lucrative revenue potential. An IBM study [1] found implementing basic accessibility measures expands market reach by nearly 21 million aging computer users in the US alone!

Plus many countries legally mandate accessibility via acts like the Americans with Disabilities Act (ADA) or guidelines like WCAG 2.1.

So optimizing website experiences for screen reader users is key from both a social and commercial perspective.

WCAG Quick Reference

For context, the Web Content Accessibility Guidelines provide best practices to follow ensuring website accessibility. Relevant points include:

• Provide text alternatives for non-text content like images.
• Provide captions/transcripts for audio-visuals.
• Ensure logical reading order and hierarchical structure.
• Make dynamic content operable without vision (no reliance on hover/scroll only interactions).
• Clearly label form fields and provide instructions.

While this article focuses specifically on screen reader testing, adhering to standards like WCAG helps ensure an accessible, optimized experience.

How To Test Websites With Screen Readers

Now that you understand screen readers better, let’s go through techniques to test your website effectively:

On Physical Devices

Testing natively on hardware like iPhones or laptops enables experiencing specific screen reader software firsthand.

Investing in popular options like JAWS or NVDA provides great insight. You can also utilize built-in tools like VoiceOver or Narrator.

But drawbacks include budget constraints and inability to check cross-browser/OS compatibility. This leads us to the next approach…

On Real Browsers in The Cloud

Leveraging online cloud platforms grants access to vast device/browser test matrices. For around $250-500 monthly, enjoy unlimited testing of screen readers on 2000+ real browser and OS combos!

Going live on real devices eliminates limitations of emulators. The video below demonstrates inspecting BrowserStack‘s site on Microsoft Edge with their built-in Narrator tool:

[insert video demonstrating screen reader testing]

As illustrated, the tool automatically interprets and reads out page elements while allowing keyboard navigation. Testing realistically reveals the optimal site experience for visually impaired users.

Using Browser Extensions

Finally, developer-centric browser extensions (like Chrome’s Accessibility Insights for Web) provide helpful audits and insights highlighting areas for improvement:

[insert screenshot of accessibility extension recommendations]

However, these code quality checks don’t substitute real user testing. But they provide great supplemental analysis.

Optimizing Sites For Screen Reader Users

Keep these tips in mind ensuring an accessible, frictionless experience:

Provide Redundant Cues

Don’t convey meaning solely visually or auditorily. Combine text, icons, labels, captions etc so context doesn’t get lost.

Clarify Link Context

Hyperlinks read out of context often sound confusing. Use descriptive link text indicating destination pages.

Structure Headings Well

Proper hierarchy between headings provides logical document structure and navigation by element type.

Label Forms Clear

Associate text labels indicating input purpose. Set placeholder as additional helper.

Transcribe/Caption Multimedia

Audio/video content necessitates transcripts and captions for non-visual access.

Allow Form Field Repair

Enable easy input corrections without losing progress.

Don’t Rely On Hover/Scroll Only

Ensure keyboard compatibility for all interactions.

Those are just a few critical pointers to help optimize sites for screen reader users!

Common Accessibility Mistakes To Avoid

Additionally, steer clear of these universal pitfalls that frustrate assistive tech users often:

Poor Color Contrast

Low color contrasts between text and background make content hard to decipher. WCAG prescribes a minimum 4.5:1 ratio for body text and 3:1 for larger elements.

Inappropriate Divisions

Avoid utilizing non-semantic elements like