What the miscellaneous tools cover
These are the tools that did not fit a larger category but are used often enough to keep: a QR code generator and a barcode generator that render locally without a third-party image service, a dice roller and coin flip driven by the browser's cryptographic random source, a time zone lookup, a user-agent parser that shows what your browser sends, a currency code lookup for ISO 4217 codes and symbols, a format check for US Social Security numbers, and small planning tools for water intake, water usage, budgets and expense reports.
The QR and barcode generators draw the image in the page, so the text you encode (a Wi-Fi password, a payment link, a private URL) is never sent anywhere. The Social Security validator checks structure only, against the published rules for area and group numbers. It cannot and does not check whether a number has been issued to anyone.
Practical notes
- QR codes have four error-correction levels. Higher levels survive more damage at the cost of a denser code; the default is the middle setting most printers handle well.
- The random tools use crypto.getRandomValues, so a coin flip here is as fair as a browser can make it.
- The planning templates produce a file you download. Nothing is saved on our side.