Text to Speech for Accessibility
Free AI text-to-speech for web accessibility, with practical WCAG 2.1 and ADA workflow guidance, 54 voice presets, and 9 languages.
Try it now — no signup or per-character charge
Browser audio synthesis; text handling and network needs depend on the selected engine and language.
Text-to-speech can add an optional audio format to websites, documents, and applications. It does not make a product WCAG 2.1 or ADA conformant by itself; the complete experience, controls, alternatives, and applicable legal context still need review.
Accessibility and TTS: WCAG requirements depend on the type of content and interaction. Generated narration can complement accessible text and native assistive-technology support, but it should not replace semantic HTML, keyboard access, transcripts, captions, or user-controlled playback. It may help users who:
- Have visual impairments — screen readers and audio alternatives provide access to written content
- Have reading disabilities — dyslexia, ADHD, and other conditions that make reading difficult benefit from audio alternatives
- Prefer auditory learning — some users comprehend and retain information better when they hear it
- Use small screens — optional audio may reduce the need to read long passages visually
- Have limited literacy — audio provides access regardless of reading level
What OfflineTTS contributes to an accessibility workflow:
- Engine choice — some engine-language paths can work from cached local assets
- No per-character charge — create and revise narration without a usage meter
- Processing notice — non-English Kokoro text may use the OfflineTTS phonemization endpoint
- 9 languages supported — multilingual accessibility for diverse user populations
- WAV and MP3 export — common audio formats for use in a separately tested player
- Repeatable settings — retain the voice, speed, and source revision for later corrections
Voice recommendations for accessibility:
- Heart (A-rated): Clear, warm enunciation — the best choice for general accessibility audio
- Michael (C+): Professional, measured pace — ideal for technical documentation
- Emma (B-, British): Formal British pronunciation — suitable for academic and formal content
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Text to Speech Can Support Access but Does Not Prove Conformance
Generated narration may help some people consume text, but adding an audio file does not by itself satisfy WCAG, ADA, Section 508, EN 301 549, or another accessibility requirement. Conformance depends on the complete product, its jurisdiction, and how content and controls are implemented. This page is practical workflow guidance, not a certification or legal opinion.
Keep the original text available, let users start, pause, stop, replay, and adjust playback, and avoid audio that starts unexpectedly. Provide captions or transcripts where the media context calls for them, preserve semantic headings and keyboard access, and test visible focus and screen-reader labels. A human review of the finished experience is more meaningful than the existence of a TTS export.
Test Accessibility with People, Assistive Technology, and Real Content
Pronunciation errors in names, numbers, medication terms, navigation labels, or instructions can create a new barrier. Review representative content with disabled users and the assistive technologies relevant to the service. Do not replace native screen-reader access with a prerecorded voice track; offer audio as an additional format when it helps the audience.
Privacy also varies by engine and language. Supertonic and English Kokoro text processing can remain local after their assets load, while supported non-English Kokoro text may be sent to the OfflineTTS phonemization endpoint. Avoid sensitive personal information when that route is unsuitable, document the review decision, and manage downloaded audio under the same security rules as the source.
Why Use Our Accessibility Text to Speech
Accessibility Workflow Support
Create optional narration, then review text alternatives, captions, controls, keyboard access, and the complete experience separately.
Documented Processing Paths
Select a local engine-language route when sensitive content must not use the non-English Kokoro phonemization endpoint.
Cacheable Local Options
Some routes can run from cached assets, but the website and initial model fetch need a network and non-English Kokoro needs phonemization.
No Per-Character Charge
No API key or signup is required; generate reviewed sections within the current 50,000-character workflow cap.
Popular Use Cases
🌐 Website Audio Alternatives
Offer user-controlled audio alongside accessible text and semantic structure; do not treat the export as proof of conformance.
📄 Document Accessibility
Generate audio versions of PDFs, reports, and documentation for users who cannot read standard text.
🎓 Educational Accessibility
Provide audio alternatives for course materials, lecture notes, and textbooks — supporting diverse learning needs.
🏥 Healthcare & Finance
Apply sector privacy rules and choose the engine-language processing path before entering sensitive healthcare or finance text.
Available Accessibility Voices
| Voice | Type | Best For | Preview |
|---|---|---|---|
| Heart | A-rated | Warm, clear enunciation — the best voice for general accessibility audio | |
| Michael | C+ | Professional, measured pace — ideal for technical and instructional content | |
| Emma | B-rated · British | Formal, authoritative — suitable for academic and compliance content |
How It Works
Paste Text
Enter your accessibility text (up to 50,000 chars)
Choose Voice
Pick from accessibility voices
Generate
AI creates speech on your device
Download
Save as WAV or MP3
Accessibility Text to Speech — FAQ
Yes. OfflineTTS does not charge per character and requires no signup or API key. Audio synthesis runs in your browser with the engine you select.
Offline behavior depends on the selected engine and language. Supertonic, Piper, Kitten, and English Kokoro can synthesize locally after their model files download. Non-English Kokoro uses the OfflineTTS phonemization service before audio is generated on your device.
Audio synthesis runs locally in your browser. Fully local-capable engine and language combinations keep the input on your device after model download. Non-English Kokoro sends plain text to the OfflineTTS phonemization service and receives pronunciation data before local synthesis.
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