qr
Generate, decode, validate and analyse QR codes — text, URL, Wi-Fi, vCard, email, phone, SMS, geo, calendar, crypto and UPI payloads, all in your browser.
QR コード生成Create QR codes for text, URLs, Wi-Fi, vCard, email, phone, SMS, geo, calendar, WhatsApp, Telegram, Bitcoin, Ethereum, UPI and JSON, with error correction, quiet zone, colours and PNG/SVG export.URL QR コード生成Turn any link into a scannable QR code, adding https:// when the scheme is missing and warning about unsafe schemes.Wi-Fi QR コード生成Build a standards-compliant WIFI: payload with SSID, password, WPA/WEP/open encryption and hidden-network flag so phones join the network on scan.vCard QR コード生成Generate a vCard 3.0 contact QR code with name, organisation, title, phone, email, website, address and note.MECARD QR コード生成Build a MECARD contact payload — the compact alternative to vCard that fits in a smaller, lower-version QR symbol.メール QR コード生成Create a mailto: QR code with prefilled recipient, subject and body.Phone 数値 QR コード生成Generate a tel: URI QR code that opens the dialler with the number already filled in.SMS QR コード生成Build an sms: URI QR code with a prefilled message body, encoded for both iOS and Android.Geo Location QR コード生成Create a geo: URI QR code from latitude and longitude, validating the coordinate ranges before encoding.Calendar Event QR コード生成Generate an iCalendar VEVENT QR code with start, end, title, location and description that phones add straight to the calendar.WhatsApp QR コード生成Build a wa.me link QR code with an optional prefilled message, normalising the phone number to digits with country code.Telegram QR コード生成Create a t.me link QR code that opens a Telegram chat or channel.Bitcoin Payment QR コード生成Build a BIP-21 bitcoin: URI QR code with address, amount, label and message, and check the address shape.Ethereum Payment QR コード生成Generate an EIP-681 ethereum: URI QR code with address, value and gas limit, validating the 0x + 40 hex format.UPI Payment QR コード生成Build a upi://pay QR code with payee VPA, name, amount, note and currency, validating the VPA and amount formats.JSON QR コード生成Validate and minify JSON before encoding it, so the payload fits in the smallest possible QR version.QR コードデコードUpload a PNG, JPG, WebP or GIF and decode the QR code locally with jsQR, then identify the payload type and parse its fields.QRPayloadTypeDetectorIdentify what a decoded QR payload actually is — URL, Wi-Fi, vCard, MECARD, geo, calendar, email, phone, SMS, Bitcoin, Ethereum, UPI, WhatsApp, Telegram, JSON, XML or plain text — and split it into fields.QR コード検証Check a payload before you print it: capacity at the chosen error correction level, URL/email/Wi-Fi/vCard/geo/Bitcoin/Ethereum/UPI/JSON format, unsafe schemes and scannability risks.QR Payload 解析Split a raw QR payload into its component fields — Wi-Fi SSID and encryption, vCard name and phone, geo coordinates, URI query parameters.QR Payload 整形Build a correct standard payload string from JSON fields, applying the escaping rules each format requires.QR コード ScanTestRender your QR settings and then decode the result locally, comparing it to the original payload, plus quiet zone, contrast, density and capacity checks with a Good / Warning / Risk verdict.