Generate QR Codes Offline: Text, URL, WiFi
Create QR codes from URLs, text, WiFi credentials, or vCards instantly. Download as PNG or SVG. No upload, fully offline on your desktop.
Get the tool mentioned in this guide in the desktop app:QR Code Generator
What are QR codes and why use them?
QR (Quick Response) codes are 2D barcodes that store data — URLs, text, phone numbers, WiFi credentials — in a pattern that smartphones can scan. A single QR code replaces typing a long URL or password by hand.
Common uses: linking physical products to web pages, sharing WiFi passwords, contact information (vCards), event registrations, and payment details.
Types of QR code content
URL — Most common. Scanned phones are redirected to the URL.
Plain text — Display any message or data when scanned.
WiFi — Encode SSID, password, and security type. Scanned phones auto-connect to the WiFi network.
vCard — Store contact info (name, phone, email, address) as a scannable contact.
Phone number — Initiate a call when scanned.
Email — Compose an email when scanned.
SMS — Send a preset text message when scanned.
QR code error correction and customization
QR codes have built-in error correction: even if 30% of the code is damaged or obscured, it remains scannable. Higher error correction levels allow larger customizations (adding logos, colors).
// WiFi QR code data format
WIFI:T:WPA;S:NetworkName;P:Password;;
// vCard QR code
BEGIN:VCARD
FN:Alice Smith
TEL:+1234567890
EMAIL:[email protected]
END:VCARDDownload formats and sizing
QR codes can be downloaded as PNG (raster) or SVG (vector). PNG is fine for fixed sizes; SVG scales infinitely without quality loss. MyDevTools lets you set size and error correction level before downloading.
Frequently asked questions
Can I add a logo to the center of a QR code?
Logos are possible but reduce scannability. Use error correction level "H" (highest) if you plan to overlay a logo.
What if my QR code is damaged or partially obscured?
QR codes with "H" error correction can recover if up to 30% of the code is damaged. Higher error correction makes the code more robust but slightly larger.
Is it safe to generate QR codes in a desktop tool?
Yes, QR generation runs locally on your machine. Nothing leaves your device.