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JITTER
Add to Chrome
Free Chrome extension — v2.0.0

Install JITTER — the Human Writing Protocol for Google Docs.

How to add the JITTER Chrome extension and generate a cryptographic proof that your writing is human.

JITTER is a free Chrome extension that proves your writing is human. It records your drafting process in Google Docs — typing rhythm, pauses, and revisions — and issues a cryptographic receipt you can share with a teacher, editor, or colleague. No readable text ever leaves your device.

Add to ChromeVerify a receipt at verify.scalisos.com
Three steps · under a minute

How to install JITTER and get your first receipt.

  1. Step 01

    Install from the Chrome Web Store

    Open the official JITTER listing and click Add to Chrome. The extension is free, ad-free, and weighs under 150 kilobytes. Chrome will show you the permissions it needs — activeTab, storage, and clipboardWrite — which are the minimum required to sign a drafting session without ever reading your document text.

    JITTER popup in the Chrome toolbar showing an active humanity score while a document is being drafted in Google Docs
  2. Step 02

    Open a Google Doc and start drafting

    Go to docs.google.com and open or create a document. JITTER attaches automatically. Draft the way you always do — type, pause, revise, even use backspace. JITTER listens to the rhythm locally and builds a Proof-of-Process receipt in the background. Readable text never leaves your device.

    JITTER forensic report surface summarising typing rhythm, paste-debt, and revision density for a Google Docs drafting session
  3. Step 03

    Share the receipt with anyone who asks

    When you're ready, open the JITTER popup and copy your seal. Paste it into an email, a submission form, or a message — the recipient can verify the receipt in seconds at verify.scalisos.com. No account, no sign-up, no sharing of your document text. Just cryptographic proof that a human drafted it.

    Public JITTER verification portal confirming a cryptographic receipt and proof-of-process for a human-drafted document

That's it. Once you're drafting, JITTER does the rest — an invisible, local recording of how your work came to be.

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Install FAQ

Quick answers before you add it.

Will JITTER slow down Google Docs?
No. JITTER uses the same lightweight keystroke and paste event APIs your browser already fires. It does a small amount of timing math in the background and never re-renders your document. You won't notice it's there.
Can I uninstall JITTER anytime?
Yes. Right-click the JITTER icon in your Chrome toolbar and choose Remove from Chrome, or go to chrome://extensions and remove it from there. When the extension is uninstalled, all local session data is deleted.
Does JITTER work on Edge, Brave, Arc, or Opera?
Yes. JITTER works on every Chromium-based browser — Chrome, Edge, Brave, Arc, and Opera. Firefox and Safari support are on the roadmap. Microsoft Word and Notion support are also planned.

Still deciding? Read the HVP protocol specification or browse the journal.

Add JITTER to Chrome