What you get
The raw text inside the code, a plain-English guess at what it is, and the number of bytes it holds. Links are shown as text so you can read the domain before deciding to open it.
In practice
A QR code on a parking meter, a poster or a delivery note is just a sticker. Anyone can put one there. Reading the address before you open it is the single most useful safety habit; the security explainer has the rest.
Try it yourself
Curious what the decoder is doing? It finds the three finder patterns, reads the format bits to learn the mask and error-correction level, unmasks the data, and runs Reed–Solomon correction before handing you the text.