← All guidesWiFi password from QR code: how it works (and common issues)
What's inside a WiFi QR code, how phones extract SSID/password, and why some WiFi QR codes fail to connect.
A WiFi QR code usually encodes a string like WIFI:T:WPA;S:MySSID;P:MyPass;H:false;;. Phones read it and offer to join the network.
Why WiFi QR codes fail#
- SSID/password mismatch (case-sensitive)
- Special characters that need escaping
- Hidden SSID behavior differences
- Low contrast / too small for print
Generate a new one: WiFi QR code generator. For details: WiFi format guide.
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Quick answers
Common questions
Which QR format works best?
Use standard formats like URL, WIFI, vCard, or wa.me and keep the data short.
How do I keep QR content scannable?
Remove extra fields, shorten URLs, and print larger for dense data.
Try it now
Generate QR codes locally in your browser — no uploads.