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Privacy & Google sign-in

How Kodiff handles your data — and exactly what signing in does.

What Kodiff does without any sign-in

• Your two text inputs, saved comparisons, presets and settings are stored locally in your browser (localStorage). They are not transmitted anywhere.
• The only network call is an anonymous, cookieless page-load count (Cloudflare) that records that a visit happened. It sends no content and cannot identify you.
• Everything else is blocked by the page's Content-Security-Policy.

What signing in with Google does

Sign-in is invite-only and optional. When you choose to sign in, Kodiff asks Google for permission to:

Your identity	Your name, email address and Google account ID — used only to show who is signed in and to label your synced settings. (openid, email, profile)
App-data folder	A hidden, per-app folder in your own Google Drive. Kodiff can only see files it creates there — never your documents, photos or other Drive files. (drive.appdata)

Inside that folder Kodiff keeps a single file, kodiff-sync.json, containing your saved presets and display/comparison settings. That's it.

What is never sent — even when signed in

• Your diff text / code. The content you compare stays in your browser. It is never uploaded to Google or anyone else.
• No analytics profile, no advertising, no selling of data. Kodiff has no server to receive your content.

Access approval

Sign-in is restricted to accounts the Kodiff owner has approved. If you sign in with an unapproved account, you are signed straight back out and nothing is stored. This is enforced by Google's own approved-users list and, optionally, by an allow-list inside the app.

Your control

• Sign out anytime from Settings → Account & sync. Kodiff forgets your session immediately.
• Revoke access entirely at myaccount.google.com/permissions.
• Delete your synced data by deleting Kodiff's app-data (revoking access removes the app's ability to read it; you can also clear it from your Google account's app-data management).
• Clearing your browser data removes all local Kodiff storage on that device.

Third parties

Kodiff uses Google Identity Services and the Google Drive API solely to provide the optional sync described above. Google's handling of that request is governed by the Google Privacy Policy. Kodiff's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.