QR & Barcode Online Tools
Generate instant QR codes for WiFi networks, vCard contact cards, NPCI UPI payments, email mailto, SMS, WhatsApp, and GPS coordinates.
Available Tools in QR & Barcode (6)
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Email & Mailto QR Code Generator
Generate scan-to-email QR codes with pre-filled recipient email, subject line, and message body.
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SMS & WhatsApp Direct QR Generator
Generate scan-to-chat QR codes for WhatsApp and SMS with direct phone number and prefilled message.
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Geo Map Coordinates QR Generator
Generate scan-to-navigate QR codes with GPS Latitude and Longitude to open Google Maps or Apple Maps.
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UPI QR Code Generator
Generate instant UPI QR codes for Indian payment apps (GPay, PhonePe, Paytm, BHIM) with VPA, Name, and Amount.
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WiFi QR Code Generator
Generate a scanable WiFi QR code to connect guests to your wireless network instantly without typing passwords.
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vCard Contact QR Generator
Create a vCard QR code to let people scan and save your contact information directly into phone contacts.
Frequently Asked Questions About QR Codes & Barcodes
Do QR codes generated on EverySolve ever expire or stop working?
No. All QR codes created on EverySolve are 100% static codes that encode your data directly into the black-and-white matrix modules. Because there are no intermediate redirect servers or expiring tracking tokens, your codes remain permanently functional for life.
What are the standard QR code Error Correction levels (L, M, Q, H)?
QR codes use Reed-Solomon error correction to remain readable even if partially damaged, dirty, or obscured: Level L restores up to 7% of lost data; Level M restores up to 15% (standard for general use); Level Q restores up to 25%; and Level H restores up to 30% (recommended when placing company logos in the center).
What is the 'Quiet Zone' around a QR code and why is it critical for scanning?
The Quiet Zone is a mandatory blank white margin surrounding the four outer edges of a QR code matrix. Industry standards (ISO/IEC 18004) require a minimum quiet zone width of 4 modules to prevent neighboring graphics, text, or borders from confusing the camera scanner.
What is the difference between 1D Linear Barcodes and 2D Matrix QR Codes?
1D barcodes (such as UPC, EAN-13, and Code 128) store data horizontally in parallel bars and spaces, typically holding 12 to 30 alphanumeric characters. 2D QR codes store data both horizontally and vertically in square pixel patterns, holding up to 7,089 numeric or 4,296 alphanumeric characters, including complex URIs, vCards, and binary data.
How do UPI payment QR codes comply with NPCI banking standards?
EverySolve UPI QR codes strictly follow National Payments Corporation of India (NPCI) UPI specifications (upi://pay?pa=...). They encode standard parameters including Virtual Payment Address (pa), Payee Name (pn), Currency (cu=INR), and optional Amount (am), ensuring universal compatibility across GPay, PhonePe, Paytm, and BHIM.
How should I choose the right print dimensions for physical QR codes?
A reliable rule of thumb is the 10:1 distance-to-size ratio: your QR code's width should be at least one-tenth the distance from which the user will scan it. For handheld business cards and restaurant menus, a minimum print size of 2 x 2 cm (0.8 x 0.8 in) is recommended.
Are private Wi-Fi passwords, contact details, or email addresses saved on EverySolve servers?
No. In accordance with EverySolve's strict privacy policy, all QR code string generation, payload encoding, and vector graphics rendering happen client-side in your local browser session with zero server tracking or database storage.
Can I download vector SVG formats for large-format commercial printing?
Yes. EverySolve provides both high-resolution PNG raster images for digital screens and scalable vector SVG formats that can be enlarged indefinitely without any pixelation or quality loss for billboard banners and signage.
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