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Accessibility use case

Text to Speech Reading

Text to Speech access guidance for Tamil DS

How people use spoken output to read content effectively, guided by WCAG 3.1.1 (Language of Page) and WCAG 3.1.2 (Language of Parts).

Detailed guidance for real users, assistive technology, component behavior, testing, and release checks.

Who this supports

Low-vision users, dyslexic users, tired users, older adults, multilingual readers, and people who understand better through listening.

Assistive technology

Read aloud toolsBrowser reader modeOS spoken contentScreen reader speechLearning-support apps

Primary risk

Text that looks decorative, fragmented, or hidden may become confusing when read aloud in source order.

Mixed-Language Pronunciation Assistant

Wired lang attributes:

விண்ணப்பதாரர்கள் தங்களின் விவரங்களை உள்ளிடும் போது,"Submit application"என்ற பொத்தானை அழுத்தவும்.

Spoken Pronunciation

Click Listen to simulate the Speech Synthesis pronunciation. Notice the accent adjustments!

Real user scenario

A learner opens a UX article on a phone during travel and uses read-aloud mode. They need headings, paragraphs, examples, code terms, and links to be read in a useful order. If every card has repeated labels or the page contains unexplained abbreviations, listening becomes tiring.

How people use this access method

1

The person selects text, uses browser read-aloud, enables OS spoken content, or listens through a screen reader.

2

The reading engine follows DOM order, punctuation, language tags, and visible text.

3

Headings and short paragraphs create pauses that make long content easier to follow.

4

Buttons and links are often read as text, so vague phrases such as click here become meaningless.

5

Tamil and English pronunciation depends on correct language markup and clear text boundaries.

Design requirements

These requirements are product requirements, not optional polish. If a Tamil DS component or page breaks one of these rules, users may be blocked even when the visual interface looks finished.

Declare the default language of the document using the HTML lang attribute (WCAG 3.1.1 Language of Page).

Apply the lang attribute to individual elements when the language shifts, such as Tamil quotes in an English text (WCAG 3.1.2 Language of Parts).

Use headings to divide long instructions into listening-friendly chunks.

Avoid visual-only separators when the content needs a spoken pause or label.

Expand abbreviations the first time they appear.

Use descriptive link text that makes sense outside its paragraph.

Avoid repeated marketing phrases before every section or card.

Keep numeric values readable with units, for example 44 px touch target instead of 44x44 only.

Use punctuation carefully so speech engines pause naturally.

Accessible code implementation

Use this correct, semantic React/HTML/CSS implementation pattern as a template when building or styling components for this specific access method:

<!-- Multi-lingual text-to-speech pronunciation markup -->
<article className="prose max-w-none">
  <h1 lang="ta">அரசு சேவை விண்ணப்பம் (Application Portal)</h1>
  <p lang="ta">
    விண்ணப்பதாரர்கள் தங்களின் விவரங்களை உள்ளிடும் போது, 
    <span className="font-semibold" lang="en">"Submit application"</span> 
    என்ற பொத்தானை அழுத்துவதற்கு முன் அனைத்து தகவல்களையும் சரிபார்க்கவும்.
  </p>
  
  <ul className="space-y-2">
    <li className="flex items-start gap-2">
      <span className="badge" lang="en">Step 1:</span>
      <span lang="ta">அடையாள அட்டையை பதிவேற்றவும் (<span lang="en">Smart Card Upload</span>).</span>
    </li>
    <li className="flex items-start gap-2">
      <span className="badge" lang="en">Step 2:</span>
      <span lang="ta">சரிபார்ப்பு குறியீட்டை உள்ளிடவும் (<span lang="en">OTP Verification</span>).</span>
    </li>
  </ul>
</article>
Technical breakdown: Spoken engines parse elements using the HTML lang attribute to determine which voice synthesizer and pronunciation rules to use. In mixed Tamil-English text, wrapping English terms in a <span lang="en"> and Tamil paragraphs in <p lang="ta"> prevents the synthesizer from mispronouncing English terms with Tamil syllables (or vice versa), which would sound robotic or garbled.

Component behavior implications

Accessibility becomes real at component level. The same page may pass content review but fail when dialogs, forms, menus, cards, or status messages do not expose the right behavior.

Accordion labels must be descriptive because users may listen to all triggers before opening one.

Cards need clear titles and avoid repeated prefixes.

Alert messages should start with the result or risk, not with decorative words.

Tables need captions and headers so read-aloud order stays useful.

Tooltips must not contain essential instructions that disappear during speech playback.

Long code examples need surrounding explanations before and after the snippet.

Testing script

Run this script before release. Automated checks are useful, but they do not replace trying the actual access method and completing a real task from start to finish.

Use the browser or OS read-aloud feature on the page.

Listen without looking and note where the meaning breaks.

Check whether headings give enough context before the details.

Confirm link text and button text make sense by themselves.

Check pronunciation for Tamil, English, numbers, dates, and abbreviations.

Review whether the user can pause, resume, and return to the same section.

Confirm hidden decorative text is not read as important content.

Common failures and fixes

Failure

Beautiful card grid reads as repeated fragments

Give each card a unique title, concise summary, and descriptive link text.

Failure

Long paragraph has no listening breaks

Split content into shorter paragraphs with meaningful headings.

Failure

Tamil words are read with English pronunciation

Set lang attributes on Tamil spans or blocks where correct pronunciation matters.

Failure

The important warning is placed after decorative intro text

Start alerts and instructions with the actionable message.

Tamil public-service context

Tamil DS must work for Tamil-first, English-first, and bilingual users across phones, desktops, kiosks, classrooms, offices, and public-service counters. These notes keep the guidance connected to local product reality.

Tamil public-service content often includes official names, document numbers, and English acronyms; define them clearly.

Read-aloud users may be first-generation internet users, so do not assume technical UI vocabulary.

Bilingual pages should avoid mixing Tamil and English inside the same sentence when a cleaner split is possible.

Release checklist

Content reads correctly in source order.

Headings and paragraphs create useful speech pauses.

Links and buttons are descriptive.

Language changes are marked.

Long content has summaries and clear section starts.