Word prediction that is grammar smart and inventive spelling aware. Speech recognition allows you to speak it, and we'll write it.

  • Co:Writer
  • Co:Writer
  • Co:Writer
  • Co:Writer
  • Co:Writer
What is Co:Writer?
Co:Writer is a powerful Chrome add-on designed to assist you with your digital writing tasks. It's equipped with advanced grammatical predictive text, an extensive array of topic-specific dictionaries, and sophisticated spelling support that accounts for phonetic and inventive spelling mistakes. Its speech-to-text feature transcribes your speech into text, making it an effective and versatile tool for your writing needs. Users can also enable text-to-speech functionality for feedback while writing.
Users: 400,000+
Rating: 2.87 (82)
Version: (Last updated: 2024-06-25)
Creation date: 2020-06-06
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 3
  • tabs
  • scripting
  • notifications
  • storage
  • unlimitedStorage
  • contextMenus
  • webRequest
  • webNavigation
  • offscreen
Host permissions:
  • http://*/*
  • https://*/*
Size: 38.49M
Stats date:

Other platforms

Not available on Firefox
Co:Writer (v4.9.2.519)
1.70 (3) 31,224+
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Co:Writer® Universal Extension for Chrome™ helps you write with proper grammar and spelling using topic-specific vocabulary. It integrates with the Chrome™ browser for word prediction and speech recognition just about anywhere you write online including Google Drive™, Microsoft Word, blogs, Learning Management Systems, testing, social networks, and email.

Try it for free and see if it works for you. Pricing and more information can be viewed at

How Does Co:Writer Work? As letters are typed, Co:Writer predicts the intended word with a selection of word suggestions using powerful grammar-smart word prediction. These suggestions can be read aloud by moving the cursor over the words. Selecting the intended word places it into the built-in writing document. For feedback while writing (and after writing) built-in text to speech can be used to read letters, words, sentences, and any selected text. If the microphone is chosen, you can speak and we'll convert your speech into text.

4+ Million Topic-Specific Dictionaries: Co:Writer has access to a main prediction dictionary (that includes core words) and Topic Dictionaries (that includes topic specific words). Co:Writer can access over 4 million topic-specific dictionaries which are activated based on the writing task.

A small sampling of the variety of topic dictionaries: ✔ America's Cup ✔ Compare and Contrast ✔ Dinosaurs ✔ Grumpy Cat

See more
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Helpful for students with learning differences
  • Supports struggling spellers and sentence structure
  • Has a word prediction feature and topic specific vocabulary
  • Excellent academic writing assistance for those with dysgraphia or dyslexia
  • Predictive text is accurate
  • Slows down computer significantly
  • Difficult to use and interrupts typing flow
  • Says 'not available offline' even when online
  • Expensive
  • Difficult to remove
Most mentioned
  • Slows down the computer
  • Hard to use
  • Difficult to remove
  • Expensive
  • Helpful for students with learning disabilities
Recent reviews
Hello, I hope you're having a splendid day! I am currently seeking opportunities to expand my business operations by investing in extensions with a significant user base, beginning from 50,000 users and up. No matter if your extension has a modest user base or counts its users in the millions, I am interested and ready to negotiate a purchase. If you are in possession of such an extension and looking to turn it into a profit, please consider reaching out to me. We can discuss the price and proceed with a transparent and secure transaction through a trusted escrow service based in the United States. It's great that Google allows the transfer of extension ownership between accounts, so your Google account ownership will remain intact. If you have any needs, please contact us via the following contacts Whatsapp: +1 (248) 896‑8035 Telegram:
by Kenya Otterholt Kenya Otterholt, 2024-06-04

I freaking hate this app with the bottom of my heart it should burn in heck!!! it gave me so many viruses!!! I hate it!!!
by heni sampson heni sampson, 2024-04-30

by Henry Dorison Henry Dorison, 2024-03-28
View all user reviews
Risk impact

Co:Writer is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Co:Writer if you trust the publisher.

Risk likelihood

Co:Writer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this extension.

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Promo images
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