Privacy notice
What LEDlights.org collects, why, and how to have it removed. Last reviewed 14 November 2026.
Reading the encyclopedia
LEDlights.org sets no cookies, runs no analytics or advertising scripts and loads no fonts, scripts or images from other companies. The only thing your browser stores is your light or dark theme choice, which stays in your browser's local storage and is never sent to us.
Like almost every web server, ours keeps a short technical access log (IP address, time, page requested and browser type) to keep the site secure and working. These logs are deleted automatically after about 14 days and are not used to profile visitors.
The optional email sign-up
The LED Engineer's Reference Cheat Sheet downloads without any sign-up. If you choose to enter your email address in the "email me when the cheat sheet is updated" box, we store that address with the date and the page you signed up on, and use it only to send occasional updates about the cheat sheet and the guides. Every email includes an unsubscribe link, and you can remove yourself at any time with the form below. We do not sell, rent or share the list.
Commercial retrofit estimate requests
The "Request a Free Commercial Retrofit & Utility Rebate Estimate" form on the energy savings calculator collects your facility type, fixture count, current watts per fixture, ZIP or postal code and contact email, together with the calculator values shown when you opened the form. We use them only to prepare your estimate and to contact you about it. Preparing an estimate can involve passing the details to a lighting contractor or utility-rebate partner serving your area, solely for that purpose. Requests are kept for up to 24 months and then deleted.
Product links
The history and physics articles carry no advertising or affiliate links. Some product cards on the Types, Applications and Tools pages link to retailers and may be affiliate links, marked as sponsored. If you buy through one, the retailer may pay LEDlights.org a commission at no cost to you. The automotive section also shows and links to products from GENSSI, an automotive lighting brand under the same ownership as LEDlights.org. No retailer scripts run on LEDlights.org, and the retailer's own privacy policy applies once you follow a link to their site.
Where the data is kept
Sign-ups and estimate requests are stored in files on the LEDlights.org web server, which is hosted by DigitalOcean. They are not published and are never stored in the site's public source code. No IP address is saved with them. If we connect a mailing-list or customer-management service in the future, this notice will name it before any data is sent there.
Removing your data
Enter the email address you used to unsubscribe and delete every sign-up and estimate request stored with it. Matching records are removed from the LEDlights.org server straight away. If an estimate request had already been passed to a contractor, we will ask them to delete it as well.
Changes to this notice
If this notice changes, the date at the top of the page changes with it, and any change in how sign-ups or estimate requests are used will apply only to data collected after the change.