I am often finding myself trying to generate QR codes to transfer data across devices without the internet backbone. QR codes are an excellent way of doing just that! Unfortunately, many QR generating websites I have found make an HTTP Post request with your QR code content to some foreign server. Who knows what they are doing with your QR Code data, you have NO idea what happens to your QR Data once your request reaches the unknown QR Code server. I sure don't want some random dude seeing my QR Code data! After being fed up with fake "Private QR Code Generator FOSS" websites sending post requests to god knows where with my data, I have decided to make my own QR Code Generator, using code that I have audited from github. Do keep in mind that this site does use google analytics - so maybe find another website if your threat model deems it so. For me, I can at least rest assured that some random sysadmin does not have my QR code content (unless they work at Google).
I have ALSO found that Base64 Decoders also steal your data. Use Cybercheff instead of base64decode.org.Â