This policy explains the information that may be processed when you use LewisStructureGenerator.org, contact the project or request an unsupported compound reference.
The site does not currently offer user accounts or payment processing. If you email support, the message can include your email address, name, screenshots and any other information you choose to provide. Do not send passwords, confidential records or sensitive personal information.
Supported formula lookup is performed in your browser against the site's local data. When an input is not found locally, the compound name or formula may be sent to the PubChem PUG REST service to request a conventional two-dimensional structure reference. Do not enter personal information into the formula field.
Hosting, security and analytics providers may process standard request information such as IP address, browser type, device type, referring page, requested URL, approximate location, timestamps and diagnostic data. This information can be used to operate the site, understand aggregate usage, detect abuse and troubleshoot errors.
The site uses Google Analytics. Analytics technology may use cookies or similar browser storage to distinguish visits and produce aggregate usage reports. You can restrict cookies through your browser settings, use privacy tools or block analytics scripts; some measurements may then be unavailable, but the core static content should remain accessible.
| Service type | Purpose |
|---|---|
| Vercel | Website hosting, delivery, deployment and request logging. |
| Google Analytics | Aggregate traffic and usage measurement. |
| PubChem | Fallback lookup for unsupported compound names or formulas. |
| Google Fonts and content-delivery networks | Delivery of fonts and browser libraries; standard request data may be visible to those providers. |
Third-party sites and services operate under their own terms and privacy policies. External links are provided for reference and do not place those services under this site's control.
The site does not claim to sell personal information. Information may be processed by service providers needed to host, secure, analyze and operate the site, or disclosed when reasonably necessary to comply with law, protect rights or investigate abuse.
Contact messages and related correction records may be kept for as long as reasonably needed to respond, maintain records and improve the project. Analytics and hosting data are retained according to the applicable provider configuration and policies. Data may be deleted or aggregated when it is no longer needed.
The site is an educational reference and does not knowingly require children to create accounts or submit personal information. A parent or guardian should contact support if they believe a child has provided personal information that should be reviewed or removed.
Reasonable technical measures are used, but no online transmission or storage system can be guaranteed completely secure. Service providers may process data in countries different from your own.
Privacy requests may require enough information to identify the relevant message or record. This policy may be updated as the site's features or service providers change.