A practical browser toolkit for small developer tasks

Treat every pasted value according to its sensitivity. A JWT, production payload, private key, customer record or configuration file may grant access even if the tool only appears to decode or format it. Prefer tools that process locally, verify that claim with the browser's network panel, and use sanitized samples for anything uncertain. Pretty output is not validation: reparse converted data, compare row and field counts, and inspect warnings. Keep a trusted offline alternative for work that cannot leave the device.