Last updated: February 19, 2026
ChemReference is committed to your privacy. This policy covers both the ChemReference website (chemreference.com) and the ChemReference Periodic Table & Lookup Chrome extension.
Website: ChemReference uses minimal, privacy-respecting analytics to understand general usage patterns (e.g. page views). We do not use cookies for tracking, do not collect personal information, and do not serve ads. If you use the contact form, the information you submit (email address and message) is sent to us via email and is not stored in any database.
Chrome extension: The extension collects no data whatsoever. It does not track usage, does not make network requests, and does not transmit any information. All element data is bundled locally within the extension. The only outbound action is opening a chemreference.com page in a new tab when you click a link.
The Chrome extension requires no special browser permissions. It operates entirely within its popup interface and does not access your browsing data, history, or any page content.
ChemReference does not share, sell, or transfer any data to third parties. No third-party analytics, advertising, or tracking scripts are loaded by the website or the extension.
The website uses your browser's local storage to save your preferences (such as theme selection and table display options). This data never leaves your device.
If this policy is updated, the changes will be reflected on this page with an updated date. No prior notice is required for minor clarifications.
If you have questions about this privacy policy, you can reach us through the feedback form on chemreference.com.