You can generate QR codes for plain text, URL, BitCoin (BTC), address book (mecard), address book (vcard), email (mailto), event (vevent), geographic coordinates (geo), sms, phone (tel), wifi connection.

The QR code (Quick Response Code) is a two-dimensional matrix code invented in 1994 by the development department of Denso (Aichi Prefecture), an automobile parts manufacturer (now spun off into Denso Wave).

QR codes have the ability to restore data by themselves even if the code is dirty or damaged. Four levels of "error correction capability" are available, and users can select the level that suits their usage environment. Increasing this level improves error correction capability, but the code size will also increase because more data will be stored.

The level to be selected should be determined by comprehensively considering the environment in which it will be used, code size, etc. In environments that are prone to dirt, such as factories, level Q or H should be selected, while in less dirty environments with a large amount of data, level L may be selected. In general, M (15%) is often used.

vCard (also known as VCF, Virtual Contact File) is a file standard for electronic business cards. vCards can be sent as email attachments, via MMS (Multimedia Messaging Service), the web, IM (Instant Message), QR codes, etc. In addition to name and address, the card can also contain phone numbers, email addresses, URLs, logos, photos, audio clips, etc.

Create plain text QR code, create URL QR code, create SMS QR code, create email address (MAIL) QR code, create phone number (TEL) QR code, create WIFI QR code, create BitCoin QR code, create geographic coordinate (GEO) QR code, create event (VEVENT) QR code, create MECARD QR code, create VCARD QR code