Last updated 1 October 2026
This site has no database. Charts are drawn in your browser and the numbers you type aren't sent to us. Downloads (PNG and SVG) are made on your device. When you use Share link, your chart's title, labels, values and settings are encoded into the web address after ?d=. Web addresses are sent with page requests, so that data is visible to our server (which does not keep it), to Cloudflare's ordinary short-term logs, to analytics if enabled, and to anyone you send the link to. It is encoded, not encrypted. Don't share a link to a chart containing data you want kept private.
The Share link button writes the link to your clipboard when you press it. Pasting into the table reads only what you paste. The site never reads your clipboard on its own.
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No accounts, no cookies of our own, no email collection, no saved charts, and we do not sell personal information. Questions or requests: p@pwhite.org.