Generate QR codes for a link, a Wi-Fi network, a contact, a location, a phone number, an email, a WhatsApp message or plain text. Download them as PNG and SVG, in the colours and size you choose.
Everything is generated in your browser: what you type never travels to any server and is not stored anywhere.
No. A QR code is the content itself written as a drawing: as long as the paper exists, it can be read. What can expire is whatever is on the other side, or a dynamic code from a service that shuts down.
Not with these codes: the link is written inside, and changing it means generating another one. This generator does not make dynamic codes.
Almost always one of three: too little contrast between the colours, printed too small for the distance, or no margin around it.
No. The code is computed in your browser, and neither the Wi-Fi password nor a contact's details leave your device.