What is Capti?

Capti Voice is an award-winning reading tool that offers a new approach to consuming digital content. Use Capti to listen to books, articles, and more on multiple devices, even without an internet connection!



  • Text to Speech
    Turn any text into an audiobook: Capti will read text aloud hands-free and eyes-free. Purchase more voices from our library a la cart. Listen to samples of premium voices.
  • Save for Later
    Save documents and web articles for later in your Playlist and access it even offline; synchronize your Playlist and your reading position across all your devices
  • Sophisticated Navigation
    Jump to the next/previous word, sentence, paragraph, heading, page, or a search keyword
  • Screen-Reader Support
    Extensively customized for JAWS and NVDA (Windows) and VoiceOver (iPhone, iPad)


  • Full-Text Playlist Search
    Find the best-matching tracks in your Playlist; searching inside a track is free
  • Images in Text
    View images in tracks created from EPUB, PDF, DOC(X), and other documents
  • Create Playlists
    Stay organized by saving tracks to different playlists: only 1 playlist is available by default
  • File Size Limit
    Add documents and books that are up to 100MB in size; default limit is 10MB
  • Contextual Dictionary
    Contextual word and phrase translation and definition.
  • Word Challenge
    Play Word Challenge, a fun game that will help you build vocabulary and learn the English language with your own texts
  • Original Layout for PDF
    View PDF documents exactly as the author intended, including layout, fonts, and artwork
  • Bookmarks, Highlights, Notes
    Bookmark important parts of text, highlight useful passages, and add your thoughts as notes. Export everything to a text file.

Content Resources

  • Built-in browser (iPhone, iPad)
  • Bookmarklet (Windows, Mac)
  • Copied link (iPhone, iPad)

  • Project Gutenberg: read any book from the public domain library of 50,000+ titles
  • Bookshare: people with disabilities can read any book among 500,000+ titles

  • Take a photo or screenshot**
  • Email attachments
  • Copy-paste and edit text
  • Other Capti users (AirDrop)

  • Files on your computer, flash drives, etc.


Supported Formats

  • Adobe PDF (.pdf)
  • Microsoft Word (.doc, .docx)
  • EPUB books (.epub)
  • OpenDocument Text (.odt, .fodt)
  • Google Docs
  • DAISY books (.zip)
  • Plain and Rich text (.txt, .rtf)

  • Microsoft PowerPoint (.ppt, .pptx)
  • OpenDocument Presentation (.odt, .fodt)
  • Google Slides

  • Microsoft Excel (.xls, .xlsx)
  • Google Sheets

  • OCR - Optical Character Recognition of text in images (.jpg, .jpeg, .jp2, .jpc, .jfif, .bmp, .tif, .tiff, .dcx, .pcx, .gif, .djvu, .djv, .png)**

*Except for DRM-protected and password-protected documents.
**Access to those features is in beta and limited to select users.

Text to Speech

High-quality premium voices will convert text to audio and speak text aloud in up to 26 languages.

Platforms & Browsers

  • Windows
  • Chromebook
  • iPhone
  • iPad
  • Mac
  • Chrome
  • Safari
  • Firefox

How Does It Work?

In the Press

  • Capti Voice makes it easy to add webpages or documents from a browser, Dropbox, Google Drive or clipboard to its playlist, and then listen to them narrated by naturally-sounding text-to-speech voices.
    EYE2 stuff
  • Text to speech tools are a dime a dozen, but Capti, the education app and free web service from Charmtech Labs LLC. is more than just another text to speech converter.
    Adeline Gear
  • This is a really useful app that could help out boomers, seniors, and the rest of us who either have trouble reading text on a smartphone, or simply would prefer to have the text read back to us when we're in a car, on a train, or doing something else.
    Gary Kaye
  • People who are blind, have impaired vision, or have a cognitive disability can use it just as easily as somebody running on the treadmill at the gym.
    Will Schmidt
  • Capti is a great boon to our busy, multi-tasking civilization.
    Darleen Hartley
  • Capti Voice offers me an attractive solution to the challenge of reading my iPhone while on the elliptical every morning.
    Peter Himler
  • ... this is a wonderful, free tool for listening to web content while driving, biking, exercising - whatever.
    ... Be a sweetie and introduce your parents/grandparents to this app. For those with failing eyesight, this can be a wonder
    Doug Bardwell

Get Capti Voice Now!

Free Download