Carbonbench

A company's sealed carbon record from its website or LinkedIn page. Matched on your device via a 2-character domain hash prefix.

Carbonbench shows the carbon record of the company whose page you are looking at — its website, its LinkedIn company page, or a company name you select on any page. Click the toolbar icon and you see: • Accuracy Estimate — how well the reported Scope 1+2 figure holds up against an independent estimate, with its 95% confidence band • Transparency Score — how completely the company discloses its emissions, factors and methods • Overall Score, where available • Whether the record is sealed, third-party assured, and claimed by the company • A link to the full record on carbonbench.org Every score comes with its tier (strong · fair · limited · weak). Scores follow the published methodology at carbonbench.org/methodology. The Accuracy Estimate is not an audit opinion. HOW MATCHING WORKS — AND WHAT STAYS ON YOUR DEVICE The extension reads the current tab only when you click the icon (Chrome's activeTab permission): the address, the page title, the site name, the first heading, and any text you selected. What is sent automatically is only a 2-character prefix of the SHA-256 hash of the site's domain (or of the LinkedIn company page name) — about one in 256 of all domains share it. Carbonbench answers with the short list of companies in that group and the extension matches on your computer. If a company matches, the extension requests that one company's public record — the same data anyone can open on carbonbench.org. The page address, title, site name, heading and selected text are not sent automatically. If nothing matches, you can click "Search Carbonbench for …": only then is that name sent as a search. When only part of a name matches, Carbonbench lists the candidates and asks you to pick, instead of showing another company's scores. On search engines and common platform sites (social networks, news sites, hosting services) nothing is requested automatically. When nothing matches, it says so and offers a name search. Carbonbench holds records for about 30,000 companies that publish emissions data; automatic matching by website address currently recognises only part of them, so use Search when a company is not found. A missing company may also simply not report. NO ACCOUNT, NO TRACKING No sign-in, no analytics, no ads, no cookies. The extension cannot contact any server other than carbonbench.org; this is enforced by its content security policy. ABOUT CARBONBENCH Carbonbench extracts, checks, scores and seals public corporate carbon disclosures. Formula, methodology and error rate are published.