Krumb

About

Krumb is a quiet Chrome extension that finds the "Reject all" or "Necessary only" button on cookie consent banners and clicks it for you. About a fifth of a second after the page loads, the banner is gone. You never see it. You never click anything.

If you visit 30 sites a day, that's 30 clicks a day, every day, that Krumb does for you. Forever. For free.


THE WHOLE PRODUCT IS BEING QUIET

By default, Krumb does its work silently. No toast. No popup. No badge. The banner disappears before you'd notice it was there, and the page is yours. You'll know it's working because you stop seeing cookie banners.


HOW IT WORKS

1) A community-maintained list of CSS selectors (one entry per site) ships bundled with the extension and is refreshed once a day from a public GitHub file. The list covers the top news sites, retailers, social networks, streaming services, and the major consent management platforms — OneTrust, Cookiebot, Didomi, Quantcast, TrustArc, Usercentrics, TCF — roughly 4,000+ sites at launch and growing.

2) For sites not in the list, a multilingual heuristic looks for buttons labeled "reject", "decline", "necessary only", "refuser", "ablehnen", and 30+ other variants — but only inside containers that look like cookie banners (fixed/sticky positioned, with cookie/consent keywords nearby). It refuses to fire after the first 30 seconds of page load so it stays out of the way of regular app buttons.

3) If a site sneaks past Krumb, the toolbar popup has a "Report this site" button that opens a pre-filled GitHub issue. The next user benefits within 24 hours.


WHAT MAKES KRUMB DIFFERENT

— 100% free, forever. No premium tier. No paywall. No upsell.
— Zero tracking. No analytics SDKs, no telemetry, no usage data, no error reporting. We have no servers; there is nowhere for your data to go.
— Open-source. MIT licensed. The full source code, including the selector list, is at github.com/anasvakyathodi/krumb — audit it yourself.
— Fast. No LLM, no server roundtrip, no perceptible slowdown. Pure CSS-selector clicks.
— Local-only. Settings, statistics, and your per-site whitelist are stored on your device and never synced anywhere.


A NOTE ABOUT PERMISSIONS

Krumb requests access to "all websites" — the same permission every cookie blocker needs. Banners are on every site, so we have to be there too.

Here's the honest version: the content script only looks for cookie-banner DOM elements and clicks them. It does not read page content. It does not extract form values, cookies, credentials, history, or any other data. It does not transmit anything to any server. It explicitly bails on pages with a visible password field.

You don't have to take our word for it. The full source code is on GitHub, and the full privacy policy is at github.com/anasvakyathodi/krumb/blob/main/PRIVACY.md


NOT IN SCOPE (BY DESIGN)

Krumb does one thing: dismiss consent banners. It does not block trackers (uBlock Origin already does this well), manage or delete cookies, block ads, or customize per-cookie-category preferences. If you want per-cookie-category control, use a GDPR-specific tool instead.


HELP, BUGS, AND CONTRIBUTING

Found a site Krumb doesn't handle? Click the toolbar icon, then "Report this site". A pre-filled GitHub issue opens; you review and submit. The fix lands for everyone on the next daily sync.

GitHub: github.com/anasvakyathodi/krumb
License: MIT