Kodiff — Code & Text Compare

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Differences highlight automatically as you type. Try the Sample button.

Differences —

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Settings

Account & sync

Optional — you never have to sign in. Kodiff works fully without an account; your presets & settings save in this browser. Signing in with Google syncs your saved presets & settings across your devices (e.g. your ServiceNow ignore-lists follow you from work laptop to home PC). It stores one small file in Google's private app-data folder — Kodiff can see only that file, never the rest of your Drive — and your diff text is never uploaded. What's shared.

Advanced · self-hosting & access

Running your own copy of Kodiff? Paste your Google OAuth Web client ID to turn on sign-in here.

Approval: access is invite-only — the owner approves each Google account before it can sign in.

Highlighting

Comparison style

Inline granularity (Kodiff)

Syntax highlighting

Ignore fields (XML)…

Layout

Wrap long lines

Collapse unchanged

Live compare

Mode

Theme

Privacy & network

Your text stays in this browser — Kodiff never sends your content anywhere.

One call is always on: an anonymous, cookieless page-load ping (Cloudflare). It counts visits so we know Kodiff is used and worth maintaining — it sends no content, sets no cookies, and can't identify you. Nothing else leaves this page unless you choose to sign in with Google (in Account & sync) — and even then your diff text stays put.

Keyboard shortcuts…?

Get the browser extension Add a “Compare on Kodiff” button to your site

Tip: everything here is also in the command palette — press CtrlK and type the option's name.

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saved locally

everything stays on this device

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