▦ 100% Client-Side · Multi-Payload Presets · Logo Branding · Live Optical Scanner
QR Code Generator & Scanner
Create and scan QR codes online.
Generate QR codes for links, text, Wi-Fi, contact information, email, phone numbers and other supported data types. Scan QR codes from images or your camera and download high-quality results.
🛡️ 100% Client-Side (No Uploads)🔗 URL, Wi-Fi, vCard, Email🖼️ Brand Logo Embedding📷 Live Camera & Photo Scanner📐 True Vector SVG & PNG
A versatile, client-side QR generation and scanning suite that supports custom logo branding, color styling, vector SVG/PNG exports, and real-time optical camera scanning without server uploads.
QR codes (Quick Response codes) have transformed modern digital interaction, enabling smartphone users to instantly open websites, connect to password-protected Wi-Fi networks, save contact business cards (vCards), compose emails, and make cashless payments with a single camera scan.
Unlike ordinary generators that route your data through third-party redirect tracking servers, ReducerImage generates direct, non-expiring static QR codes 100% locally in your browser memory.
📊 QR Standards
Supported QR Payload Formats
Overview of supported content structures and smartphone native handling behaviors.
Content Type
Standard Payload Schema
Native Device Action
Website URL
https://example.com
Opens default mobile browser
Wi-Fi Network
WIFI:S:SSID;T:WPA;P:pass;;
Connects to Wi-Fi without typing password
vCard Contact
BEGIN:VCARD ... END:VCARD
Prompts to save contact in Address Book
Email Message
mailto:user@mail.com?subject=...
Opens default email client with draft
WhatsApp Direct
https://wa.me/number?text=...
Opens WhatsApp chat with prefilled text
How QR Error Correction Enables Logo Branding
QR codes incorporate Reed-Solomon Error Correction, dividing the matrix into redundant blocks. When you choose Level H (High - 30%), up to 30% of the QR matrix can be obscured or covered by a central company logo while remaining 100% readable by camera scanners.
⚡ Processing Pipeline
How the Browser QR Engine Works
Our client-side QR generator and scanner workflow executes in four synchronized steps:
Phase 1
📥
Schema Formatting
Constructs standardized data schemas (URL, Wi-Fi, vCard, mailto) with special-character escaping.
Phase 2
📐
Matrix Synthesis
Computes binary finder patterns, timing tracks, alignment markers, and Reed-Solomon codewords.
Phase 3
🎨
Visual Compositing
Applies foreground/background colors, contrast safeguards, and renders center logo badges.
Phase 4
🔍
Optical Scanning
Decodes uploaded photos or live camera video frames in real time with jsQR.
📋 Step-by-Step Guide
How to Create & Scan QR Codes in 8 Easy Steps
Follow this simple workflow to design customized, branded QR codes in seconds.
1
Select Preset
Choose URL, Wi-Fi, vCard, Email, or WhatsApp.
2
Enter Payload
Fill in your website link, credentials, or text.
3
Pick Colors
Customize foreground and background tones.
4
Embed Logo
Upload your brand icon for professional styling.
5
Choose Size
Select 512px for web or 2048px for print.
6
Download Asset
Export pure vector SVG or crisp PNG files.
7
Scan Photo
Upload any QR image screenshot to decode.
8
Live Camera Scan
Scan physical QR codes with your webcam or phone.
🧰 Free Utility Suite
Explore Related Code & Data Tools
Fast, browser-based barcode tools, Base64 converters, and SVG generators.
Answers to common questions about QR code generation, Wi-Fi presets, logo embedding, and optical camera scanning.
A QR (Quick Response) code is a two-dimensional matrix barcode invented in 1994, capable of storing thousands of alphanumeric characters such as website links, Wi-Fi network credentials, and contact cards in a square grid of dark and light modules.
Select the 'Website URL' preset, enter your full domain or web address (e.g. https://mywebsite.com), customize colors or add a brand logo, and click 'Download PNG' or 'Download SVG'.
Yes. Select the 'Wi-Fi Network' preset, type your SSID network name, select WPA/WPA2 security, and enter your password. Scanning the code automatically connects iOS and Android smartphones without typing passwords.
Yes. Select the 'vCard' preset and enter your name, phone number, email, company, and website. When scanned, phones immediately prompt to save the contact directly into the address book.
Yes. Upload your brand logo image in the customization panel. The generator will embed it in the center of the QR code with high error correction (Level H - 30%) to maintain scanability.
QR error correction uses Reed-Solomon mathematical algorithms to restore data if part of the QR code is obscured, smudged, or covered by a central logo (Level L = 7%, M = 15%, Q = 25%, H = 30%).
Yes. Click 'Download Vector (.SVG)' to export pure, resolution-independent vector geometry ideal for high-resolution billboards, posters, packaging, and banners.
Yes. Switch to the 'Scan QR Code' tab and drag-and-drop any PNG, JPG, or WebP screenshot. The built-in scanner decodes the payload instantly.
Yes. Click 'Start Camera Scanner' to activate your webcam or phone camera for real-time live optical scanning with zero lag.
No. All QR matrix synthesis, logo compositing, image decoding, and camera scanning execute 100% locally in your web browser.
QR readers rely on high optical contrast between the foreground modules and background surface, as well as a 4-module blank margin (quiet zone) around the edges, to detect finder patterns accurately.
Yes. The QR generator and scanner are fully responsive and touch-optimized across iPhone, iPad, Android smartphones, and desktop computers.
