rewr.it for Chrome

Is this obviously AI? Then fix it.

A side panel that does two things. It tells you whether a piece of writing reads as machine-written, and it puts the words back in your own voice. In Gmail and LinkedIn it reads the message you are already composing and writes the result back; everywhere else, paste it in.

The extension is with the Chrome Web Store for review and is not installable yet. Everything below is what it does when it arrives — and the checker already works here, in this browser, with no account.

Tell me when it is in the store

One email when the extension can be installed. It is the same list the notes go out on, and one click stops both.

Your address goes to Buttondown, who send the list. It is not stored here, it is never attached to anything you paste into the tool, and every message has an unsubscribe link.

How it works

  1. Check, before anything is sent

    Paste a draft, or grab the composer you are in. A reading appears above it: how machine-shaped this reads, and the patterns behind the number. It runs in the panel, so nothing leaves your machine, no account is involved, and there is no daily limit — there is no record to make.

  2. Rewrite, in one click across

    The same text box feeds both jobs, because the sequence people actually run is “is this obviously AI? … then fix it”. Press the button and the rewrite streams in — you never paste it twice.

  3. See whether it actually worked

    The rewrite arrives with the same scorer’s verdict on both versions — Machine tells 47 → 6 — and it says so when a rewrite came out worse. Names, numbers and dates that went missing or appeared are listed.

  4. Put it back, or don’t

    Insert writes it into the Gmail or LinkedIn composer you took it from, replacing your selection if that is what you grabbed. Undo is there for thirty seconds. Copy always works, everywhere.

What it reads, and what it keeps

Checking never leaves your browser. The scoring runs in the panel — the same code this site runs at /detect — so text you only check is never sent anywhere. It works with the network off.

Rewriting sends the text you asked to rewrite, and nothing else. Your drafts are not stored, here or on your machine: the panel forgets everything when you close it, and the only thing kept on your device is your API key.

On Gmail and LinkedIn it can read the message you are composing and write a rewrite back, when you ask it to. It reads no other part of those pages and runs on no other site. It also reads the address bar’s host name — mail.google.com, not the full address — to guess what kind of writing you are doing. That guess is made in your browser.

Before you install

RequiresChrome 114 or later, which is where the side panel arrived.
AccountOnly for rewriting. Checking needs no account and no key, and it is not a trial of anything — it is free because it costs nothing to run.
Where it worksThe panel works on any page. Reading and replacing a composer is Gmail and LinkedIn only, because each one needs its own knowledge of where the composer is.
Already openA tab open before you installed gets the extension the moment you install — you should not have to reload Gmail to be met by a working panel.
FormattingInsert writes plain text. Bold, links, and list structure inside what you replaced are lost, so Copy is the safer move in a formatted draft.
What it will not doIt does not add or remove facts on purpose, and it is not sold as defeating AI detectors. The number it shows is a mapping from known patterns, not a measurement, and never a claim about who wrote something.

Help

Email merlynn@gmail.com. A real person reads it.

The extension documentation covers setup, what each control does, and the two or three things that are worth knowing before they surprise you. What is stored, in full, is on the privacy page.

If the panel says there is no composer while you are looking at one, reload the tab — and tell us, because that is a bug rather than a step.