Know what a QR code holds before you open it
This tool doesn’t just dump raw text. The content is recognized as a web link, WiFi network, email, phone number, SMS, location or contact card, and the important parts are laid out clearly. For links, the site name (domain) is shown in bold so it is easy to check, and no link is opened automatically. Only http and https addresses can be clicked; anything else, such as javascript:, is shown as plain text only.
That matters because QR codes can be used for scams (quishing): a fake code is stuck over the real one to send you to a look-alike site. Get in the habit of checking the address before opening it, and never enter personal or payment details from a link you don’t recognize.