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Text to speech 2026 Rank: #1414

CastReader ✓

Turn any text into explained audio with AI voices.

Source rating 4.5 (2) 963 views 7 saves Freemium
Browser Extension Text To Speech AI Voices
More categories (4)
Multilingual Reading Aid Audiobooks Text to speech
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Free + from $4.99/mo

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Verdict

A quick read before you dig into the full page.

Best if
Turn any text into explained audio with AI voices
Skip if
Only works via browser extension
Pick this when
Converts text to audio

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Overview

CastReader is a highly versatile tool designed to convert written text on various platforms into audio, transforming articles, PDFs, Kindle, AI chat replies, and more content into a listenable format.

It boasts two key reading features: Quickread and a standard reading-aloud feature. Quickread provides user-friendly content translations, summarizing and explaining complex passages in the user's preferred language, and highlighting key points with a moving pen.

The read-aloud feature, on the other hand, narrates any text with natural sounding AI voices, providing an engaging listening experience akin to a podcast.

Advanced features include the ability to listen to Kindle, WeRead, and O'Reilly content straight from your browser, extending to DRM-protected pages as well.

Furthermore, it offers the convenience of converting articles into audio that can be listened to via one's mobile device for on-the-move consumption. It also supports reading aloud emails and documents for proofreading or multitasking purposes.

Besides, users can selectively listen to specific text by highlighting a section and getting CastReader to read out just that part.Adaptable language support enabling translation and explanation in over 40 languages, alongside universal compatibility, makes it a valuable tool for users worldwide.

Platforms it seamlessly works on include Gmail, Notion, Feishu Docs, Yuque, Kindle, Medium, Wikipedia, and Substack. Also, uniquely, it is equipped to parse explanations provided by AI platforms like ChatGPT, Claude, Gemini, among others.

Altogether, CastReader serves as a dynamic reading tool ideal for both personal and professional use.

CastReader website

Access & connections

Where you can use CastReader, and what it plugs into.

Platforms

Web

Integrations

Notion Gmail

Capabilities

What this tool accepts, produces, and is strongest at.

Input

  • Tabular
  • Text

Output

  • Audio

Supported features

  • Web browsing
  • TTS
  • Translation
  • PDF
  • Teaching Humans

Pros & cons

Pros

  • Converts text to audio
  • Offers Quickread and Read-aloud
  • Summarizes complex text
  • Highlights key points
  • 40+ languages supported
  • No signup required
  • Works on multiple browsers
  • Transforms Kindle books into audiobooks
Show 40 more
  • Accessible across devices
  • Converts articles into audio podcasts
  • Useful for proofreading
  • Auto-detects language of highlighted text
  • Free Chrome extension
  • DRM-protected content tool
  • Mobile compatibility
  • Supports emails and documents
  • Used by content creators
  • Real-time word highlighting
  • Listening to specific sections of text
  • No limitation on text length for conversion
  • Accessible for all users
  • One-click webpage audio conversion
  • Works with Gmail, Notion, Feishu Docs, Yuque, etc.
  • Can read DRM-protected pages
  • Auto page-turning for uninterrupted reading
  • Option to continue listening on phone
  • Paragraph-level highlighting
  • Unpacks dense academic writing
  • Cross-language functionality
  • Integrated pen marks key points
  • Auto-detecting any language
  • Select any text to read
  • Flexible content consumption method
  • Supports ADHD, dyslexia readers
  • Helps in proofreading text
  • Offers native pronunciation for learners
  • Visually impaired user accommodating
  • Can read long email threads
  • Reading aid in 40+ languages
  • Can translate and explain complex passages
  • Auto-sends e-books to phone
  • Good for multitasking
  • Integrated within web browse
  • Ability to mute specific parts
  • Word-level highlighting for easy proofreading
  • Auto-translation of foreign language news
  • Adaptable language support
  • Custom audio listening from highlighted text

Cons

  • Only works via browser extension
  • No mobile application
  • Requires active internet connection
  • Less efficient for small text
  • Podcast-like experience lacks customization
  • Only supports text-to-speech
  • Doesn't support automatic bookmarking
  • No offline mode
Show 2 more
  • No transcription support
  • No personalized voice options

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Releases 1

Initial release June 17, 2026 Current
Initial release of CastReader.

FAQ 12

What is CastReader?
CastReader is an AI-based tool capable of turning articles, PDFs, Kindle books, and AI chatbot responses into audio forms. It offers two unique reading options: Quickread and plain read-aloud. Also, it is equipped to convert Kindle, WeRead, or O'Reilly books into audiobooks, thus allowing seamless listening across devices. Other distinct features of CastReader include auto-detection of the language of the highlighted text, compatibility with multiple web browsers, and the ability to aid users in proofreading or reviewing content by reading documents and emails aloud.
How does CastReader work?
CastReader operates using advanced AI technologies to transform written content into an audible form. Users are given the option of a Quickread that summarizes and highlights key points of dense or complex texts, or a plain read-aloud that narrates any content in a natural AI voice. It also allows for content creators and AI developers to listen to individual AI responses from ChatGPT, Claude, and Gemini, among others. Additionally, a unique feature of the tool is the ability to highlight any text to have it read aloud with automated language detection.
Can CastReader read Kindle books?
Yes, CastReader can indeed read Kindle books. It's not only capable of converting Kindle books into audiobooks, but it can also handle WeRead or O'Reilly books. Once converted, users can enjoy seamless listening across various devices.
What is the difference between Quickread and plain read-aloud on CastReader?
The Quickread option in CastReader is designed to explain complex or foreign language text by summarizing it and highlighting key details with a moving pen. This approach facilitates understanding of dense academic writing. On the other hand, the plain read-aloud feature on CastReader reads any content verbatim in a natural AI voice, providing a more straightforward listening experience.
Does CastReader support other languages, apart from English?
Certainly, as per their website information, CastReader is multilingual and works with over 40 languages. It automatically detects the language of the highlighted text to be read aloud.
Do I need to sign up or log in to use CastReader?
No, users do not need to sign up or log in to use CastReader. According to their website, it is instantly available for use without the necessity of signup or login.
How does the 'highlight to read' feature work on CastReader?
The 'highlight to read' feature on CastReader lets users select any text on a webpage they wish to hear aloud. Once the text is highlighted, CastReader will read the selected passage in a natural AI voice. Furthermore, this tool can automatically detect over 40+ languages, ensuring the reading is presented with a natural sounding voice in the appropriate language.
Can CastReader read out AI chatbot responses?
Yes, as stated on their website, CastReader can read out AI chatbot responses. Users can listen to individual AI responses from chatbots like ChatGPT, Claude, and Gemini among others.
What web browsers are compatible with CastReader?
CastReader is compatible with multiple web browsers, including Chrome, Edge, Firefox, and Safari, making it versatile for users across different platforms.
Does CastReader work with AI voices from ChatGPT, Claude, and Gemini?
Yes, CastReader works with AI voices from ChatGPT, Claude, and Gemini. Users can listen to individual responses from these chatbots, further enhancing its utility as an AI-based reading tool.
Can CastReader convert long articles into audios using AI voices?
Indeed, CastReader can convert long articles into audios using AI voices. This allows users to have an experience similar to listening to a podcast.
Can I use CastReader for proofreading or reviewing content?
Yes, CastReader can assist with proofreading or reviewing content by reading documents and emails aloud. This can be particularly beneficial for identifying errors or enhancing understanding of the content.
CastReader Free + from $4.99/mo
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