ClarifierAI for Chrome is a Chrome extension that rewrites, fixes and translates only the text you select, in any text field on the web. It is the browser version of ClarifierAI, an iOS keyboard that makes your words clearer and translates across 113 languages in any app, and it keeps the exact same prompts so your text comes out the same on phone and desktop. The extension is built for people whose writing happens in the browser — the maker describes his own work as emails, LinkedIn messages, support tickets and docs — and it brings the Improve, Clarify, Grammar, Polite, Shorten and Translate actions directly to the place where you type.
The product story behind the extension is a simple one. After launching the iOS keyboard, the most common request the maker received was "I need this on my laptop too." Most of his own writing happens in the browser, and there he was back to copy-pasting between tabs and AI chats just to make one sentence sound right. ClarifierAI for Chrome was rebuilt as a Chrome extension to remove exactly that loop: no new tab, no copy-paste, and no need to paste a corrected sentence back into the field where it belongs. Because the prompts are shared with the iOS keyboard, a rewrite produced on an iPhone and a rewrite produced in Chrome should read the same way.
The defining behaviour is scope. You select any part of your text in any text field, and ClarifierAI improves, translates or changes its tone right where you type. Only the part you selected is changed, and the rest of your message stays untouched. If nothing is selected, it works on the whole field instead. Reviewers singled this out: one commenter wrote that "only touching the text I selected instead of the whole field is the part I trust here," adding that every rewrite extension they had tried eventually mangled something they wanted to keep exactly as it was.
There are three ways to trigger the extension. You can select text and click the ClarifierAI button, or press Alt+Shift+C, or right-click and choose "Format with ClarifierAI" from the context menu. All three routes act on the current selection inside the field you are already typing in, so the interaction stays inside your existing workflow rather than pulling you into a separate app. When nothing is highlighted, the same actions apply to the whole text field, so the extension works whether you want to touch one sentence or the entire draft.
The action set covers the common editing jobs. Improve, Clarify, Grammar, Polite and Shorten are built in, and Translate handles languages. Beyond the presets, the extension supports your own custom actions — the maker's examples are "make it formal" and "explain like I'm 5" — which lets you save instructions that match how you actually write. Because the prompts match the iOS keyboard, the same action produces consistent results across phone and desktop.
Translation is a first-class feature rather than an add-on. The Chrome extension translates into 119 languages, using a searchable language picker with your recent languages shown at the top so that the languages you use daily are one tap away. On iOS, ClarifierAI translates across 113 languages in any app, and the keyboard works in Gmail, LinkedIn, iMessage, WhatsApp, Slack and more. The point in both cases is the same: you translate in place instead of switching between apps or copying text into a separate translator.
Changes are transparent rather than final. After ClarifierAI runs, you see every change highlighted, and you can click any single change to undo just that one — an all-or-nothing undo is deliberately avoided so you keep your own voice. Pressing the checkmark replaces the text in the field, and Command+Z undoes it. Two small extras round out the editing experience: UPPERCASE and lowercase conversion in one click, which needs no AI at all, and light and dark mode. The extension works in Gmail and most text fields on the web.
Privacy is stated plainly in the launch post. The extension reads your text only when you open ClarifierAI on it, and there is no browsing history access, no tracking and no ads. That matters because the fields where people write in the browser are frequently work contexts — client emails in Gmail, internal messages in Slack — so the reading is limited to the moment you deliberately invoke the tool on a selection.
The practical benefit the maker promises is speed: writing and translating your messages 10x faster, using AI directly where you type. Instead of moving a sentence out to an AI chat and back, you act on it inline, in the same field, with the rest of your draft preserved. The highlighted diff and per-change undo mean you can accept most of a rewrite while rejecting the one word that no longer sounds like you. And because nothing is selected by default, the whole-field mode still covers the case where you want a full paragraph reworked end to end.
The maker lists three concrete workflows from his own use. Before sending an important email, he selects the paragraph and runs Improve. When a reply sounds too harsh, he selects that one sentence and makes it Polite. When writing to colleagues abroad, he types in his native language and translates in place. On the iOS side, a reviewer described using translation most in work chat and while shopping on Chinese marketplaces such as Taobao, and said they no longer use a separate translator because they dislike switching between apps.
ClarifierAI for Chrome is listed as free and is available through the Chrome Web Store; the launch page also points to the iOS keyboard as the earlier release from the same product. The extension's supported surface is Gmail and most text fields on the web, and it inherits the prompts of the iOS keyboard so behaviour stays consistent across devices. The product is published on Product Hunt by a small maker team, with the Chrome launch following the iOS launch.
In short, ClarifierAI for Chrome takes the selection you highlight in a browser field and makes it clearer, shorter, more polite, grammatically correct, or translated into one of 119 languages — without a new tab, a copy-paste round trip, or a rewrite of text you wanted left alone.