Chrome extension
Comment on any page.
Even behind a login.
Writhink for Chrome turns any live website into a feedback canvas. Click an element, write the comment, send. The pin sticks to the element, a screenshot comes with it, and it lands in your Writhink project straight away.
Free. Works with any Writhink account. Your clients don’t need it.
When to use it
You already have a review link. Here’s when the extension is the better tool
The two are for different moments. The link is what you send to a client. The extension is what you use yourself, on pages a link cannot reach.
The page is behind a login
A client dashboard, an admin panel, a members area, a staging site behind basic auth. A shared review link loads the site through a proxy and cannot sign in as you. The extension runs in your own browser session, so if you can see the page, you can pin on it.
The site refuses to be framed
Plenty of sites set a content-security policy that blocks embedding. Iframe-based review tools give up there. The extension does not use an iframe at all — it draws on the page you are already looking at.
It is a single-page app
Routes change without a page load, and the URL is not always the whole story. The extension follows along and anchors each pin to the element, not to a screenshot coordinate.
You are reviewing your own work
You are already in the browser with the site open. Opening the panel and pinning is faster than switching to Writhink and pasting the URL.
How it works
Three steps, then it’s muscle memory
- 1
Sign in once
Open the panel and sign in with your Writhink account. It stays signed in.
- 2
Open the site
Any page — staging, production, localhost, behind a login. The extension matches the Writhink project for that site automatically, and admins can create one on the spot.
- 3
Click, type, send
Press Comment, click the exact spot, write. The comment appears in your dashboard and on the project's review link, attributed to your account.
What a comment carries
A pin is not a screenshot with an arrow on it
- The element the pin is anchored to, so it stays put when the layout moves
- The page URL, so you know where you were
- A screenshot of the page exactly as you saw it
- The viewport size and the device the comment was made on
- The comment itself, and any files attached to it
- Who wrote it — your account, not an anonymous guest
That is what makes the next step possible: Writhink hands all of it to the AI that writes your implementation prompt, or to an AI coding agent over MCP.
FAQ
Before you install
- Do my clients need the extension?
- No, and they should not install it. The extension is for you and your team. Your clients get a review link, open it in any browser, and comment without an account or an install.
- Is it free?
- Yes. The extension is free and works with any Writhink account, and Writhink itself is free while it is in beta.
- What does it collect?
- It sends data only when you post a comment or manage your projects. There is no browsing tracking, no analytics and no ads in the extension. It asks for access to all sites because it cannot know in advance which site you will want to comment on.
- Is there a Firefox or Safari version?
- Not today. Chrome only — and by extension the Chromium browsers that install from the Chrome Web Store, such as Edge, Brave and Arc, though we test on Chrome.
- Where do the comments end up?
- In the same place as everything else: the project in your Writhink dashboard, and the project's review link. A comment left with the extension and a comment left by a client on the link are the same kind of comment, in the same list.
- Can it comment on a local dev server?
- Yes. It runs in your browser on whatever page you have open, so localhost and private staging URLs work the same as a public site.
Install
Add it, then forget it’s there
Until the moment you need to pin a comment on a page nothing else can reach.
Not sure yet? how pinned annotation works or the whole feedback workflow.