Do these QR codes expire or have scan limits?

No! These are 100% static QR codes. All payload data is encoded directly into the pixel matrix itself without any intermediary redirect servers. They will work permanently and have zero scan limits.

What is Error Correction (ECC) and which level should I choose?

Error Correction Level allows QR codes to be decoded even if partially dirty, damaged, or covered by a center logo. Levels include L (7%), M (15%), Q (25%), and H (30%). Level H is automatically recommended when adding custom center logos.

Can I export scalable vector SVG files for professional print?

Yes! Click the "Vector SVG" button to download an infinite-resolution vector file suitable for Adobe Illustrator, Figma, large banners, and billboard printing.

Are UPI Payment and Wi-Fi QR codes secure?

Yes. All QR generation is executed completely locally inside browser memory using HTML5 Canvas and vector rendering. No passwords, UPI IDs, contact details, or credentials ever leave your computer.

QR Code Generator & Studio

Free online QR Code Generator & Studio. Create custom QR codes for URLs, Wi-Fi passwords, UPI payments, vCards, and WhatsApp with gradients, center logos, and vector SVG/PNG downloads.

⚡ Interactive Calculation Engine Active

Please enable JavaScript in your browser to run live computations, 2D envelope diagrams, and export PDF reports.

How to Use QR Code Generator & Studio

Choose your QR payload type: URL, Wi-Fi network, UPI payment, vCard contact card, WhatsApp chat, Email, SMS, Location, Event, or Plain Text.
Fill in the structured fields (e.g. Wi-Fi SSID & Password, UPI Payee VPA, or vCard profile details).
Customize colors, apply linear gradients, or select from curated brand palettes.
Add an optional Center Logo (upload your business logo or choose preset brand icons) with automatic High Error Correction (ECC H).
Optionally enable a Call-to-Action banner frame (e.g., "SCAN ME", "SCAN TO PAY", "CONNECT WI-FI").
Check the real-time Scan Contrast score to ensure 100% effortless camera readability.
Export instantly as High-Res PNG (up to 4K print), scalable vector SVG, print-ready PDF flyer, or copy directly to clipboard.

Complete Guide to QR Code Payload Standards

Different smartphone camera scanners support specific URI schemas for instant 1-tap actions: • **Wi-Fi Auto-Connect**: `WIFI:S:NetworkName;T:WPA;P:Password;;` allows guests to join your network without typing passwords. • **UPI Direct Pay (India)**: `upi://pay?pa=merchant@bank&pn=MerchantName&am=499` opens GPay, PhonePe, Paytm, or BHIM instantly with pre-filled amounts. • **vCard 3.0 Digital Business Card**: `BEGIN:VCARD ... END:VCARD` adds full contact information, phone, email, and address directly into smartphone contacts. • **WhatsApp Direct Chat**: `https://wa.me/phone?text=Message` opens a direct WhatsApp conversation. • **Calendar Events**: `BEGIN:VEVENT ... END:VEVENT` triggers 1-tap calendar appointment creation.

Design Best Practices for Maximum Scanability

1. **Maintain High Contrast**: Always ensure a contrast ratio of 4.5:1 or higher between foreground and background. 2. **Preserve the Quiet Zone**: Keep a minimum border margin of 2 to 4 blocks around the code matrix to help camera lenses identify boundaries. 3. **Use Error Correction Level H for Logos**: Center logos cover part of the QR matrix; setting ECC to H (30% recovery) ensures 100% scan reliability. 4. **Keep URLs Concise**: Shorter URLs produce simpler, cleaner module grids that scan faster from further distances.

Frequently Asked Questions

Do these QR codes expire or have scan limits?: No! These are 100% static QR codes. All payload data is encoded directly into the pixel matrix itself without any intermediary redirect servers. They will work permanently and have zero scan limits.
What is Error Correction (ECC) and which level should I choose?: Error Correction Level allows QR codes to be decoded even if partially dirty, damaged, or covered by a center logo. Levels include L (7%), M (15%), Q (25%), and H (30%). Level H is automatically recommended when adding custom center logos.
Can I export scalable vector SVG files for professional print?: Yes! Click the "Vector SVG" button to download an infinite-resolution vector file suitable for Adobe Illustrator, Figma, large banners, and billboard printing.
Are UPI Payment and Wi-Fi QR codes secure?: Yes. All QR generation is executed completely locally inside browser memory using HTML5 Canvas and vector rendering. No passwords, UPI IDs, contact details, or credentials ever leave your computer.