Skip to main content
Jankar StudioQR Generator
FREE ONLINE QR CODE GENERATOR

Free QR Code Generator — Create QR Codes in Seconds

Free online QR code generator and barcode creator for India. Make custom QR codes for links, Wi-Fi, WhatsApp, UPI payments, contact details and more — download your QR code instantly as PNG or SVG.

Create QR CodeExplore QR Types
Free to use
No sign-up
PNG & SVG Vector
No account required
PREVIEW // vCard & UPIVerified Valid
https://jankarstudio.inScan with phone camera
Interactive Studio

Generate Custom QR Codes

Choose your data type below, enter your information, adjust colors and design, and download in PNG or SVG vector format.

HTTP or HTTPS

Tip: If you omit https://, it will be automatically added for standard protocol compatibility.

Live Preview
URL

https://jankarstudio.in

Inspect Raw Payload
https://jankarstudio.in
100% Client-Side Generation

Your input is processed strictly in your browser. No passwords, Wi-Fi keys, or UPI data are sent to any remote server.

Action successful
SUPPORTED FORMATS

Choose What to Create: 10 QR Code Types

Every QR code format is standardized, tested with real phone scanners, and generated 100% on your device — no barcode generator software to install.

Popular

Website URL QR Code

Direct visitors seamlessly to your website, blog, portfolio, or landing page without typing URLs.

Create now
India Essential

UPI Payment QR Code

Enable instant payments via GPay, PhonePe, Paytm & BHIM. Ideal for Indian shops, kiranas, and freelancers.

Create now
Convenient

Wi-Fi QR Code

Share home or cafe Wi-Fi credentials securely. Guests join your network automatically with one scan.

Create now
High Conversion

WhatsApp Chat QR Code

Launch a direct WhatsApp conversation with a pre-filled message for quick customer support and inquiries.

Create now
Networking

Contact Card (vCard) QR

Encode full contact details including name, phone, email, and address directly into phone address books.

Create now

Email QR Code

Draft pre-addressed emails with preset subject lines and message templates for orders and inquiries.

Create now

Plain Text QR Code

Encode notes, Wi-Fi keys, Hindi Unicode text, serial numbers, or promotional codes up to 1,000 characters.

Create now

Phone Number QR Code

Prompt the smartphone telephone dialer immediately for direct helpline and customer support calls.

Create now

SMS Message QR Code

Trigger SMS messages with preset recipients and text for quick confirmation and event registration.

Create now

Location & Maps QR Code

Share precise geographic coordinates or Google Maps locations for storefronts, weddings, and venues.

Create now
COMPREHENSIVE TOOL GUIDE & AI PROMPTS

Free QR Code Generator & Barcode Creator: Architecture, Standards & AI Prompt Guide

A deep-dive technical overview of this client-side QR code builder and 2D code generator — covering barcode standards, UPI payment compliance, print vector standards, and ready-to-use AI prompts for 2026 digital workflows.

AI Direct Answer & Entity Summary (GEO 2026)

What is Jankar Studio QR Generator? Jankar Studio is a zero-knowledge, open-web QR code generator and barcode creator engineered specifically for Indian creators, merchants, developers, and global users. Searched as a QR code creator, QR code builder, 2D code generator, or kode QR generator — it does the same job: permanent, private QR codes with no sign-up. Unlike subscription-based QR services that route scans through tracking proxies and impose expiration paywalls, Jankar Studio processes all barcode matrices client-side in the user's browser runtime. It delivers permanent, unalterable static QR codes formatted for NPCI UPI payments, high-speed Wi-Fi onboarding, WhatsApp chats, vCard contacts, and web URLs with instant SVG vector and high-DPI PNG export.

1. The Evolution of QR Codes in 2026: Why Client-Side Generation Matters

Quick Response (QR) codes have evolved from simple inventory management barcodes into the primary tactile interface bridging physical reality with digital services. In India, the explosive proliferation of the Unified Payments Interface (UPI) alongside contactless hospitality menus and automated Wi-Fi onboarding has made QR scanning a several-times-daily routine for hundreds of millions of smartphone users.

However, the commercial QR generator ecosystem has become compromised by anti-consumer monetization models. Many search results lead users to freemium utilities that wrap destination addresses into proprietary redirect URLs ("dynamic QR codes"). Fourteen days after printing thousands of flyers, business cards, or product labels, users discover their QR codes suddenly redirect to billing paywalls demanding monthly subscription fees.

Jankar Studio eliminates this hazard through a verified static architecture. When you input text, Wi-Fi credentials, or UPI payment strings into Jankar Studio, the raw payload data is encoded directly into ISO/IEC 18004 barcode matrices inside your device's browser memory. Because no remote web server intermediates the scan, the QR code you download will function perpetually without subscription renewals, link rot, or third-party downtime.

2. Native Support for Indian Payment and Communication Protocols

General-purpose global QR tools frequently mishandle region-specific protocols. Jankar Studio is built with native specifications for:

NPCI UPI Intent URLs

Standardized upi://pay?pa=... intent schemas recognized by Google Pay, PhonePe, Paytm, BHIM, CRED, and all Indian banking apps with optional preset amounts and transaction notes.

WhatsApp Direct Click-to-Chat

Internationalized E.164 phone normalization with pre-filled greeting messages that trigger native WhatsApp client chats without requiring customer contact saves.

WPA/WPA2/WPA3 Wi-Fi Syntax

Automated escaping of special characters (semicolons, colons, and backslashes) in SSIDs and passphrases so guests connect instantly without keyboard typos.

vCard 3.0 Contact Profiles

RFC-compliant electronic visiting cards capturing full name, corporate title, email, phone numbers, and web portfolios across iOS and Android address books.

3. Print Production Standards: SVG Vectors vs Raster PNGs & Contrast Rules

One of the most frequent printing errors in marketing campaigns is printing pixelated low-resolution raster images. When a 300x300 pixel PNG is enlarged to fit a shopfront banner or billboard, the module corners blur, resulting in optical scanning failures on budget smartphone sensors.

Jankar Studio provides mathematically defined SVG Vector downloads. Vector SVG files can be scaled to any physical dimension—from a 1-inch stamp to a 50-foot highway hoarding—with infinite precision and zero pixelation.

The Golden Rules of QR Scannability:

  • Contrast Ratio: Maintain a minimum 4.5:1 (ideally > 12:1) contrast ratio between foreground modules and background canvas. Dark modules on a light background scan up to 400% faster than inverted patterns.
  • Quiet Zone: Always preserve a 4-module blank margin around the perimeter of the barcode to isolate the detection corners from surrounding text or graphics.
  • Error Correction Level (ECL): Choose Level M (15% redundancy) for standard links and visiting cards. For QR codes placed in outdoor environments or subject to scuffs and lamination reflections, select Level Q (25%) or Level H (30%).
AI PROMPT ENGINEERING LIBRARY

How to Prompt AI to Generate QR Code Data & Strategies

Copy and paste these optimized prompts into AI models like ChatGPT, Google Gemini, Claude, or Perplexity to generate perfectly structured QR payloads for Jankar Studio.

UPI & E-Commerce#01

Prompt 1: Generate Business UPI & Payment QR Data

Act as a digital payments consultant. I need to generate an NPCI-compliant UPI QR code string for my business. My details are: - Business Name: [Your Store/Company Name] - VPA/UPI ID: [e.g., yourname@okhdfcbank or merchant@upi] - Default Amount: [Optional: e.g., 250.00] - Transaction Note: [e.g., Order Payment #102] Format the exact URL intent string as 'upi://pay?pa=...&pn=...&am=...&cu=INR&tn=...' so I can copy and paste it directly into Jankar Studio QR Generator. Also provide advice on physical print placement and test-scanning steps before lamination.
Ready for ChatGPT / Gemini
Hospitality & Wi-Fi#02

Prompt 2: Cafe & Office Wi-Fi + Contactless Menu Setup

Act as a guest-experience designer for my cafe/restaurant. I want to create two seamless QR codes using Jankar Studio: 1. Wi-Fi QR code: SSID "[Your Wi-Fi Name]", Security [WPA/WPA2/WPA3 or Open], Password "[Your Password]". 2. Contactless Menu QR code: URL "[https://yourrestaurant.com/menu]". Provide step-by-step instructions on minimum print dimensions (in inches and cm), the recommended Error Correction Level (M or Q) for table tents, and how to format the Wi-Fi credentials with proper character escaping.
Ready for ChatGPT / Gemini
Networking & vCard#03

Prompt 3: vCard 3.0 Digital Visiting Card Formulation

Act as an executive branding specialist. Create a complete, standards-compliant vCard 3.0 payload for my professional visiting card with the following details: - Full Name: [First Last] - Company / Title: [Company Name, Designation] - Phone: [+91 98765 43210] - Email: [you@example.com] - Website: [https://yourportfolio.in] - Location: [City, State, Country] Format the response as raw RFC 2426 vCard text starting with BEGIN:VCARD and ending with END:VCARD, ready to paste into Jankar Studio vCard QR maker without syntax errors.
Ready for ChatGPT / Gemini
Print & Production#04

Prompt 4: Print Campaign Scannability & Contrast Audit

Act as a senior prepress print production engineer. I am preparing a print banner/flyer containing a QR code generated from Jankar Studio. Review my production parameters: - Banner Dimensions: [e.g., 2ft x 3ft or A4 Flyer] - Estimated Scanning Distance: [e.g., 1 meter or 3 meters] - Foreground Color: [e.g., #171717] and Background Color: [e.g., #ffffff] - Export Format: SVG Vector Calculate the required minimum QR code module dimension in millimeters, confirm whether the contrast ratio meets WCAG 2.1 AAA standards, and explain why static client-side QR codes prevent link rot in printed campaigns.
Ready for ChatGPT / Gemini

4. Technical Specifications & 2026 Standards Matrix

Specification ParameterJankar Studio StandardBenefit for Users
Encoding Location100% Client-side (HTML5 Canvas / SVG DOM)Total privacy; zero server exposure for Wi-Fi keys & UPI IDs.
Code PermanenceStatic ISO/IEC 18004 StandardNever expires, no monthly fees, no redirection proxy risk.
Export FormatsSVG (Vector) & PNG (Up to 1600px High-Res)Crisp rendering on web screens, paper flyers, and retail boards.
Supported FormatsURL, UPI, Wi-Fi, WhatsApp, vCard, SMS, Email, Text, Phone, GeoComprehensive all-in-one generator suite for personal and commercial needs.
Licensing & Commercial UseUnrestricted Open Use (Royalty-Free)Free for product packaging, commercial billing, flyers, and software.

5. Share & Cite Jankar Studio QR Generator (Off-Page SEO)

Help colleagues, small business owners, and developers avoid expired dynamic QR paywalls by sharing Jankar Studio or citing it in your articles and documentation:

Markdown Link / Citation

[Jankar Studio QR Generator](https://jankarstudio.in)

Share Tool:Share on XShare on WhatsAppShare on LinkedIn
Copied to clipboard!
SIMPLE 4-STEP WORKFLOW

How It Works

Generate professional QR codes in under 15 seconds without registration.

STEP 01

Choose your QR code type

Select from 10 supported formats: Web links, UPI payments, Wi-Fi passwords, WhatsApp chat, vCard contacts, and more.

Ready in 1 click
STEP 02

Enter your information

Type your link, credentials, or payee details into the validated form fields. See immediate real-time feedback as you type.

Ready in 1 click
STEP 03

Customize the design

Adjust colors with built-in contrast checking, choose export dimensions (up to 1024px print resolution), and optionally embed a logo.

Ready in 1 click
STEP 04

Download and scan your QR code

Export sharp PNG or vector SVG files. Test immediately with your phone camera or QR scanner app.

Ready in 1 click
PRACTICAL APPLICATIONS

Real-World Use Cases

See how merchants, creators, and individuals across India rely on static QR codes every day.

India Specific

Small Businesses & Kirana Shops

Display clear, high-resolution UPI payment QR codes right on your storefront billing counter. Customers can scan and pay seamlessly using Google Pay, PhonePe, Paytm, or BHIM.

Print at 1024px resolution for crisp, weather-resistant lamination.
Hospitality

Restaurants, Cafes & Bakeries

Place touchless menu QR codes on dining tables. Customers can scan to view your latest online digital menu, daily specials, or connect directly to guest Wi-Fi.

Direct to your mobile-friendly website URL or online menu.
Manufacturing

Product Packaging & Retail Labels

Add QR codes to cartons, clothing tags, and bottles linking customers to user guides, authenticity verification, ingredient lists, and warranty registration.

Download vector SVG format for loss-free high-DPI commercial printing.
Professional

Business Cards & Professional Networking

Print a clean vCard QR code on the back of your visiting card. When tapped or scanned, contact details, email, and phone save directly into iOS and Android address books.

Includes phone, email, company, and website.
Events

Wedding Invitations & Event Venues

Print accurate Google Maps or GPS location QR codes on physical marriage and conference cards so attendees get instant turn-by-turn navigation without typing venue addresses.

Use Location QR mode for 1-tap navigation on smartphones.
Creators

Digital Creators & Freelancers

Share your YouTube channel, Instagram page, GitHub, or freelance portfolio link across printed banners, meetups, conference slides, and merchandise.

Generate clean URL QR codes with high scannability.
Offices & Co-working

Instant Wi-Fi Sharing

Eliminate the frustration of typing complex Wi-Fi passwords. Guests and team members scan the Wi-Fi QR code and join the encrypted network automatically.

Supports WPA2/WPA3 and hidden SSIDs safely.
E-commerce

Direct WhatsApp Customer Support

Put a WhatsApp click-to-chat QR on invoices, receipts, and package slips with a pre-filled order inquiry message to turn buyers into repeat clients.

Pre-fills your 10-digit number and custom message text.
Important note on Static QR Codes:All QR codes generated on Jankar Studio are permanent, non-expiring static QR codes. The data is encoded directly into the pattern itself without routing through an intermediary tracking server. Static codes work forever and never break due to subscription lapses.
FREQUENTLY ASKED QUESTIONS

Answers to Common Questions

Everything you need to know about creating, using, and printing QR codes.

What is a QR code?
A QR (Quick Response) code is a two-dimensional (2D) code — an advanced type of barcode — capable of storing diverse alphanumeric information, including website URLs, contact cards (vCard), plain text, Wi-Fi credentials, and UPI payment strings. Standard smartphones and QR scanner cameras can read them instantly from any angle.
What is the difference between a QR code and a barcode?
A traditional barcode (also called a codebar or 1D barcode) stores data in parallel lines and holds a small amount of numeric data, like an EAN product code. A QR code is a 2D code generator output — a square matrix of pixels that holds far more data (URLs, Wi-Fi passwords, vCards) and can be scanned from any angle. Jankar Studio is a QR code generator and 2D code generator; it does not produce retail 1D barcodes such as EAN-13.
Can I scan a QR code with my phone camera?
Yes. Every modern iPhone (iOS 11+) and Android phone has a built-in QR code scanner inside the default camera app — just point it at the code. You can also use a QR photo scanner: Google Lens, Google Photos, or gallery apps can scan a QR code directly from a saved photo without printing it.
Is this QR code generator free for India?
Yes. Jankar Studio is a 100% free QR code generator built for Indian users, with native support for NPCI UPI QR codes (Google Pay, PhonePe, Paytm, BHIM), Hindi Unicode text, and local use cases like kirana stores, restaurant menus, and visiting cards. No sign-up, no watermarks, no scan limits.
Is this QR code generator free?
Yes, Jankar Studio QR Generator is 100% free to use for both personal and commercial purposes. There are no fees, hidden paywalls, scan limits, or watermarks attached to your generated codes.
Do I need to create an account?
No account, email, or registration is required. You can generate, customize, and download as many high-resolution QR codes as you need directly in your browser without signing up.
Can I create a QR code for my website?
Yes. Simply select the URL tab, paste your website address (such as https://yourdomain.com), and your custom QR code will be generated immediately. When scanned, it launches your website directly in the user’s mobile browser.
Can I generate a Wi-Fi QR code?
Yes. Choose the Wi-Fi option, enter your network name (SSID), choose your security protocol (WPA/WPA2/WPA3, WEP, or None), and enter your password. Modern iPhones and Android smartphones will automatically ask to connect to your Wi-Fi network when they scan the code.
Can I create a UPI payment QR code?
Yes. You can generate a standard NPCI UPI payment QR code by entering your UPI ID (VPA) and payee name, with optional preset amount and payment notes. It works seamlessly across Google Pay, PhonePe, Paytm, BHIM, and Indian bank mobile apps. Note that the payer must verify details on their app before completing the transaction.
Can I download my QR code?
Yes. You can download high-resolution raster images in PNG format (256px, 512px, or 1024px print resolution) as well as infinite-resolution scalable vector graphic (SVG) files suitable for large banners, signage, and merchandise printing.
Do QR codes expire?
No. Static QR codes created on Jankar Studio encode your raw data directly into the black and white matrix. Because they do not rely on an external redirection server or paid subscription, they never expire and remain functional forever.
Are the generated QR codes static or dynamic?
All QR codes generated here are static QR codes. Static codes are permanent and private because they encode the exact information directly into the visual pattern. Once generated and printed, the encoded data cannot be edited remotely, but you never have to worry about broken redirect links or subscription fees.
Is my data uploaded to a server?
No. Jankar Studio generates all QR codes completely on the client side inside your web browser. Your sensitive inputs — such as Wi-Fi passwords, phone numbers, contact cards, and UPI IDs — never leave your device and are never sent to our servers or stored in any database.
Can I use QR codes for business?
Absolutely. You are free to use your generated QR codes for commercial projects, restaurant menus, product packaging, point-of-sale billing displays, visiting cards, advertisements, flyers, and digital marketing materials with zero licensing restrictions.
Why is my QR code not scanning?
Common reasons include: (1) Insufficient contrast between foreground and background colors — always use a dark foreground on a bright background; (2) The QR code is printed too small or at low resolution; (3) The quiet zone (margin) around the code is too narrow; (4) The camera lens is smudged or held too close; or (5) A custom center logo is covering too many essential data modules — always use High (H) error correction when embedding a logo.