Browser extension

OpenBook Review — evidence checks as you write

A Grammarly-style checker for clinical writing. As you type in your browser, it underlines statements that touch published clinical guidelines and shows you the citation, evidence level and a link to the source. It flags and cites — it never edits your text or makes a clinical decision. You decide.

🎉 Free during early access — no card required.

Download for Chrome / Edge Download for Firefox

Web-store one-click listings are in review. For now it installs in ~1 minute via the steps below. Safari, a desktop app, and Microsoft Word / Google Docs add-ons are also available — ask us.

Install in Chrome or Edge

Unzip the download

Double-click openbook-review-chrome.zip to get a folder.

Open the extensions page

Go to chrome://extensions and turn on Developer mode (top-right).

Load it

Click Load unpacked and select the unzipped folder.

Pin & go

Pin the OpenBook icon, then start writing in Gmail, a web EHR, or any text box. Clinical statements get a gold underline — click one for the citation.

Private by design

Identifiers are removed on your device before any check. No tracking, no ads.

Cited, never invented

Every flag links to a real, verified source. No citation it can’t trace.

Flag & cite only

It highlights and cites. It never edits your text or advises. You decide.

Please read before using

Synthetic / de-identified content only during early access — do not use it on identifiable patient records.
Works in Gmail, Word Online, and most web text boxes. It cannot underline inside Google Docs (which draws text on a canvas) — use the OpenBook Google Docs add-on there.
It is a decision-support aid, not a medical device. No underline does not mean a statement is correct — it means nothing in the evidence base bears on it.

By installing you agree to the Terms and Privacy Policy.