Privacy Policy

Last updated: November 10, 2026

The Long Chart (“the site”) is a static page of Bitcoin and S&P 500 charts. This policy explains what happens to your data when you use it.

What we collect

We do not ask for, collect, or store personal information. There are no accounts, comments, cookies, advertising, or analytics or tracking scripts on the site. The only form is the optional “Contact us” form described below. The charts and their data are embedded in the page, so using them does not send anything about you to us or to third parties.

Data stored in your browser

The site uses your browser’s local storage to remember display preferences: colour theme, log-scale setting, chart date range and price basis. This stays on your device, is never sent to us, and you can clear it any time in your browser settings.

Hosting and server logs

The site is hosted on Cloudflare Pages. Like any web host, Cloudflare processes technical data such as your IP address, browser type and requested URL to deliver the site and keep it secure, and may keep standard logs. See Cloudflare’s privacy policy. We do not have access to a log of individual visitors.

Contact form

If you use the “Contact us” form, the message, the topic and any email address you type are sent to our server and forwarded by email to the site owner through the Resend email service. We do not keep a copy on the site, and we use what you send only to reply to you. The form uses a simple sum to keep automated spam out; no third-party captcha or cookies are involved.

Search

The site’s owner uses Google Search Console to monitor how the site appears in Google Search. It reports aggregate search data about the site, not about individual visitors.

External links

If the site links to other websites, they have their own privacy practices that we do not control.

Children

The site is not directed at children and does not knowingly collect information from anyone.

Changes and contact

We may update this policy; the date above shows the latest version. Questions can be raised on the GitHub issues page.