Reading a QR code from an image is technically safe, the act of decoding just reveals a link, but what you do next is where caution matters. Whether the code came from a screenshot, an email, or a download, a few simple checks keep you secure.
Decoding vs Opening
Decoding a code from an image only reads the data; it doesn't take any action on its own. The risk, if any, comes from opening the link it contains. So the safe habit is to always look at the decoded destination before tapping through.
Check the Link First
Any good reader shows you the link before opening it. Read it carefully: does the address match where you expect to go? Be wary of odd misspellings of known brands or links that don't match the context the code appeared in.
Be Cautious With Unknown Sources
A code from a trusted email or your own files is generally fine. A code from an unknown sender or a random download deserves more scrutiny, exactly as you'd treat any unexpected link. The image origin is a useful clue to how much to trust it.
General Safe Habits
Keep your phone updated, don't enter sensitive details on a page reached by an unexpected code, and when in doubt, navigate to the site yourself instead. These habits apply to all codes, whether scanned live or read from an image.
FAQ
Common questions are answered in the FAQ section below.