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.
Bộ tạo mã QRCreate 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.Bộ tạo URL mã QRTurn any link into a scannable QR code, adding https:// when the scheme is missing and warning about unsafe schemes.Bộ tạo Wi-Fi mã QRBuild a standards-compliant WIFI: payload with SSID, password, WPA/WEP/open encryption and hidden-network flag so phones join the network on scan.Bộ tạo vCard mã QRGenerate a vCard 3.0 contact QR code with name, organisation, title, phone, email, website, address and note.Bộ tạo MECARD mã QRBuild a MECARD contact payload — the compact alternative to vCard that fits in a smaller, lower-version QR symbol.Bộ tạo bí mật mã QRCreate a mailto: QR code with prefilled recipient, subject and body.Bộ tạo Phone số mã QRGenerate a tel: URI QR code that opens the dialler with the number already filled in.Bộ tạo SMS mã QRBuild an sms: URI QR code with a prefilled message body, encoded for both iOS and Android.Bộ tạo Geo Location mã QRCreate a geo: URI QR code from latitude and longitude, validating the coordinate ranges before encoding.Bộ tạo Calendar Event mã QRGenerate an iCalendar VEVENT QR code with start, end, title, location and description that phones add straight to the calendar.Bộ tạo WhatsApp mã QRBuild a wa.me link QR code with an optional prefilled message, normalising the phone number to digits with country code.Bộ tạo Telegram mã QRCreate a t.me link QR code that opens a Telegram chat or channel.Bộ tạo Bitcoin Payment mã QRBuild a BIP-21 bitcoin: URI QR code with address, amount, label and message, and check the address shape.Bộ tạo Ethereum Payment mã QRGenerate an EIP-681 ethereum: URI QR code with address, value and gas limit, validating the 0x + 40 hex format.Bộ tạo UPI Payment mã QRBuild a upi://pay QR code with payee VPA, name, amount, note and currency, validating the VPA and amount formats.Bộ tạo JSON mã QRValidate and minify JSON before encoding it, so the payload fits in the smallest possible QR version.Bộ giải mã mã QRUpload a PNG, JPG, WebP or GIF and decode the QR code locally with jsQR, then identify the payload type and parse its fields.QR Payload Type DetectorIdentify 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.Bộ xác thực mã QRCheck 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.Bộ phân tích cú pháp QR PayloadSplit a raw QR payload into its component fields — Wi-Fi SSID and encryption, vCard name and phone, geo coordinates, URI query parameters.Bộ định dạng QR PayloadBuild a correct standard payload string from JSON fields, applying the escaping rules each format requires.mã QR Scan TestRender 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.