Spotlight Reader by lucas
Read web pages aloud with natural offline voices and live sentence-level highlighting. Free and private, no account needed: offline Supertonic TTS and Google Translate, plus optional cloud voices (Google, Amazon, Azure, OpenAI, IBM).
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About this extension
Spotlight Reader reads the article on the current web page aloud and highlights each sentence as it is spoken — directly on the page, Speechify-style. Click any sentence to jump to it.
★ Reading experience
- Sentence-level in-page highlighting with hover preview and click-to-seek.
- Voice favorites, per-language auto-select, adjustable speed.
- Redesigned settings with light/dark mode.
★ Many voices
- Free online: Google Translate.
- Offline: Supertonic and Piper.
- Optional cloud voices with your own API key: Google WaveNet/Neural2/Chirp3-HD, Amazon Polly, Microsoft Azure, OpenAI (and OpenAI-compatible), IBM Watson.
★ Offline & private
- Supertonic neural TTS runs fully on your device (31 languages incl. German, English, Spanish, French, Korean, Portuguese). Install once, then no internet and no account required.
- No telemetry, no unsolicited network requests.
Spotlight Reader is an independent fork of the open-source "Read Aloud" by ken107 (MIT-licensed), focused on offline TTS and in-page highlighting for Firefox. Source code: https://github.com/luc42ei/spotlight-reader
If you find Spotlight Reader useful, consider supporting many hours of development:
https://ko-fi.com/lucaseichhorn
★ Reading experience
- Sentence-level in-page highlighting with hover preview and click-to-seek.
- Voice favorites, per-language auto-select, adjustable speed.
- Redesigned settings with light/dark mode.
★ Many voices
- Free online: Google Translate.
- Offline: Supertonic and Piper.
- Optional cloud voices with your own API key: Google WaveNet/Neural2/Chirp3-HD, Amazon Polly, Microsoft Azure, OpenAI (and OpenAI-compatible), IBM Watson.
★ Offline & private
- Supertonic neural TTS runs fully on your device (31 languages incl. German, English, Spanish, French, Korean, Portuguese). Install once, then no internet and no account required.
- No telemetry, no unsolicited network requests.
Spotlight Reader is an independent fork of the open-source "Read Aloud" by ken107 (MIT-licensed), focused on offline TTS and in-page highlighting for Firefox. Source code: https://github.com/luc42ei/spotlight-reader
If you find Spotlight Reader useful, consider supporting many hours of development:
https://ko-fi.com/lucaseichhorn
Independent Firefox fork focused on offline TTS and in-page highlighting.
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Permissions and data
Optional permissions:
- Access browser activity during navigation
- Access your data for translate.google.com
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 3.0.4
- Size
- 6.48 MB
- Last updated
- 5 days ago (Jun 25, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection
The developer of this extension asks that you help support its continued development by making a small contribution.