Is my data really never uploaded?
Tools with the green LOCAL badge run entirely in your browser — inputs never leave your device. Tools with the grey network badge (like DNS lookup) state exactly what is sent and to whom, in the badge and below the tool.
Where are my favourites and recents stored?
In your browser only (localStorage). Kits stores just your favourites, recently used tools, and preferences — never tool inputs or outputs — and has no server-side copy. Clear it any time from your browser's site-data controls.
A tool gave the wrong output. What should I include in a report?
The tool name, your browser and version, a minimal input that reproduces the problem, and what you expected instead. Since we can't see your data, the repro input is essential.
Can you add a tool I need?
Tool requests are triaged from GitHub Issues weekly. Local-first tools (no server component) ship fastest — describe the input, the output, and the formats involved.