Tools
Free tools, no account
Three things adjacent to what Lua does. Two of them never send your URL anywhere, because they do not need to.
UTM builder
Tag a link so the click reads back as a placement rather than as "Direct". Runs in the browser; nothing is sent anywhere.
OpenQR code generator
A QR code for any URL, downloadable as PNG or SVG. Generated in the browser, so the address never leaves your machine.
OpenRedirect checker
Follow a short link through every hop and see where it actually ends up, and what status each step returned.
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