GmailHumanize replies before you send, and scan inbound emails for AI.
Chrome ExtensionHumanize & Detect AI anywhere you type.
Highlight any text in Gmail, Docs, LinkedIn, Notion, Slack, ChatGPT, or Claude. Walter humanizes AI drafts or checks if the text is AI, in one keystroke.
In every text box
The eight apps you already open every day.
No copy-paste. No tab-switching. No second window. Highlight, hit a shortcut, and Walter humanizes or detects AI in place.
Gmail
Google DocsRewrite AI drafts and check them for AI, sentence by sentence in the doc.
LinkedInHumanize your posts and comments, and detect AI in what you read.
NotionHumanize notes and scan docs for AI without leaving Notion.
SlackClean up messages and check threads for AI before you reply.
ChatGPTTurn ChatGPT output into your voice, then verify it reads as human.
ClaudeMake Claude's drafts read like you, and check their AI score.
X / TwitterPost in your own voice, and detect AI in replies and quotes.
What you can do
Two jobs. One extension.
Walter is a single browser extension that humanizes AI text and detects AI content across every text box, every page, every email.
Humanize AI text in one click
A humanized rewrite that passes leading detectors at 96.4% on the RAID benchmark.
Detect AI text on any page
A calibrated AI probability for any selection, scored sentence by sentence.
Walter Writes vs. Grammarly
Walter picks up where Grammarly stops.
Walter is a single browser extension that humanizes AI text and detects AI content across every text box, every page, every email.
| AI CAPABILITIES |
Walter Writes
| Grammarly |
|---|---|---|
| Humanize AI text | ||
| Detect AI in any selection | ||
| Inline grammar | ||
| Keeps your text private | ||
| Open-source on text path |
Privacy and data handling.
Text is sent to our API only when you explicitly invoke a tool (click, shortcut, or context menu). The extension never reads pages in the background. Our text-handling code is open-source, and you can read the full privacy policy and security review on our security page. Submitted to Chrome Web Store under enhanced review.
Frequently asked questions.
Quick answers about safety, privacy, and how the extension works.
Are Chrome extensions safe?
Walter only reads text when you explicitly invoke it (a click, shortcut, or right-click menu). It never reads pages in the background. The text-handling code is open-source, and the extension passed Chrome Web Store’s enhanced review.
Does the extension work offline?
Partly. Grammar and short-text checks under 200 words run in your browser and work offline. Humanizing, AI detection, plagiarism, and longer grammar checks need a connection, since they call our API.
Can my employer block it?
Yes. Like any extension, an organization can block or allowlist Walter through managed Chrome policies. If it’s blocked on your work profile, it still works on a personal Chrome profile.
Does it work in Incognito?
Only if you turn it on. Chrome disables extensions in Incognito by default; you can enable Walter at chrome://extensions. It works the same way there and still only sends text when you invoke it.
Humanize & Detect AI anywhere you type.
Highlight any text to humanize AI drafts or check if it is AI, right inside Gmail, Docs, LinkedIn, Notion, Slack, ChatGPT, and Claude.