Privacy
gridprims has no accounts, ads, cookies, or tracking. What you type and the files you load stay on your device.
What your device keeps
Only your theme choice and anything you chose to save, such as a kept file. Settings lists all of it and erases it.
Problem reports
A report holds the tool name and version, the dataset versions, the page address without anything after #, and what you write. Your inputs and result are added only if you tick the box. File contents are never added. You see the exact report before you send it.
We delete a report 180 days after we close it, and always within 365 days of receiving it. Counts used to stop spam are kept apart from reports.
To have a report deleted sooner, send its id through the report form or a GitHub issue.
Usage counts
Our host keeps aggregate request counts per page. No script on these pages measures you.