QR Code Generator - QR Code Maker

This tool is a professional QR code generator and QR code reader/parser. It solves the needs of extracting information from QR code images or converting URLs, text, and other content into QR code images. Its core advantages include highly customizable online QR code styles (colors, logo, error correction level, etc.) and local processing to protect privacy. With this QR code generator, you can quickly complete QR code generation, QR code recognition, and QR code parsing tasks.

QR

Select a scene to create a custom QR code

Fill in the configuration on the right and click "Generate QR Code" to preview

Supports http/https/ftp protocols; if no protocol is provided, https:// will be added automatically

Free Online QR Code Generator | Professional QR Code Recognition & Parsing Tool

Core Features of the QR Code Tool

This QR code generator is a full-featured QR code processing solution that integrates QR code recognition, QR code parsing, QR code generation, and QR code creation. All operations are completed locally in the browser without server participation, ensuring user data security. As a free online QR code generator, it supports QR code generation and QR code creation for various scenarios, meeting various QR code usage needs, while also providing accurate online QR code recognition and QR code scanning capabilities.

🔍 Smart QR Code Recognition / QR Code Parsing

  • Supports mainstream image formats: JPG, PNG, WebP, GIF, BMP, etc. for online QR code scanning and QR code recognition
  • Provides anti-blur and anti-distortion processing, can parse slightly damaged QR code images, improving the success rate of online QR code recognition
  • Automatically identifies QR code types (URL, text, WiFi, business card, email, etc.) and completes accurate QR code parsing
  • One-click copy of parsing results, supports complete extraction of complex content, convenient for converting QR codes to links or text
  • Professional QR code recognition algorithm with high recognition rate and fast speed, supports uploading images directly on desktop for QR code scanning

🎨 Highly Customizable QR Code Generation

  • Multi-scenario support: URL/link to QR code, email, contact, phone, WiFi, custom text
  • Full color configuration: supports any foreground/background color combination to create colorful QR code images
  • Flexible size adjustment: 100-800px pixel range to meet different usage scenarios
  • Four-level error correction control: from 7% to 30% error correction level for different environments
  • Logo customization: supports adding a custom logo and adjusting its size ratio (recommended 10%-30%) to create branded QR codes
  • Corner radius configuration: adjustable 0-50px corner radius to create personalized QR codes
  • Completely free: free online QR code generator, no watermark, no usage limit

🔒 Local Secure Processing

  • 100% local processing, data never passes through any server, protecting privacy and security; QR code recognition and parsing do not leak information
  • No ads, no watermark, no usage limit for a pure experience
  • No registration or login required, open the page to use this online QR code tool
  • Responsive design, supports mobile/tablet/desktop and other devices
  • Generated QR codes comply with international standards and are compatible with all scanning devices

💾 Convenient Export Features

  • Generated QR codes are exported in high-definition PNG format with clear quality, easy to save QR code images
  • Automatic file naming for easy management and search
  • Supports multiple edits and re-export, adjust QR code style anytime
  • One-click configuration reset to quickly start a new QR code creation
  • Generated QR codes can be directly used for printing, display, sharing and other scenarios

What Is a QR Code Generator?

A QR code generator (QR code maker) is a tool that encodes text, URLs, contact information, and other information into QR code images. As a professional QR code generator online platform, this tool supports online QR code generation, QR code creation, as well as QR code recognition and parsing. All operations are completed locally in the browser without uploading data. Whether making colorful QR codes, adding logos, or adjusting error correction level and corner radius, this QR code maker can easily achieve it.

What Is a QR Code?

A QR code (Quick Response Code) is a matrix two-dimensional barcode invented by Denso Wave in 1994. Compared with traditional one-dimensional barcodes, QR codes have advantages such as larger information capacity, stronger error correction capability, faster reading speed, and wider application range. They have become an important information carrier connecting online and offline. As a type of QR code, QR Code is the most widely used two-dimensional code due to its fast reading speed and large information storage, and it is also the main object of this QR code generator for QR code recognition, QR code parsing, and QR code generation.

  • Large information capacity: can store up to 7,089 digits or 4,296 alphanumeric characters
  • Strong error correction capability: can still be recognized normally even if part of the area is blocked or damaged, improving the reliability of online QR code recognition
  • Fast reading speed: can be quickly scanned and recognized from any direction; both phones and computers can easily complete QR code scanning
  • Wide application range: supports storing URLs, text, contact information, payment information and other data types; QR code images can be widely spread

QR codes have been widely used in mobile payment, product traceability, marketing promotion, information display, identity verification and other fields. This free online QR code generator is designed to meet the needs of QR code creation, QR code recognition, and QR code parsing in various scenarios.

Scenario-based QR Code Generation | Professional QR Code Creation

This QR code generator supports QR code generation for multiple standardized scenarios. Each scenario follows internationally accepted QR code encoding standards to ensure that scanning devices can correctly recognize and process them. Whether converting links to QR codes, making WiFi QR codes, or generating contact QR codes, this QR code maker can meet your needs, making it convenient to obtain information through QR code scanning or QR code recognition later:

URL/Link to QR Code

Follows URI encoding standards. After scanning, the browser automatically opens the corresponding URL. Supports http, https, ftp and other protocols. If no protocol is specified, https:// is automatically added. It is the best choice for converting links to QR codes, and the generated QR code images can be directly used for sharing.

Email QR Code

Uses the mailto: protocol format. After scanning, the email client automatically opens with the recipient, subject, and body pre-filled, allowing users to send emails directly. A professional email QR code generation tool that supports online recognition of email content in QR codes.

Contact Information QR Code

Uses the vCard (electronic business card) standard format. After scanning, the contact information can be directly saved to the phone address book. It supports name, phone, email, company, position and other information, making a dedicated contact QR code for quick adding via QR code scanning.

Phone Number QR Code

Uses the tel: protocol format. After scanning, the dialing function is automatically triggered. Supports landline, mobile phone numbers and international area codes, allowing users to quickly dial, generating a QR code that can be directly scanned to open the dialing interface.

WiFi Network QR Code

Follows the WiFi QR code standard (WIFI:T:encryption type;S:name;P:password;;). After scanning, the corresponding WiFi network is automatically connected without manually entering the password. It is an ideal tool for making WiFi QR codes, and mobile phones can quickly connect to the network by scanning.

Custom Text QR Code

Plain text encoding format, supports any character content, suitable for storing notes, instructions, serial numbers and other information. Supports a maximum of about 250 Chinese characters. Make custom QR codes for free; the generated QR code images can be used for various text transmission scenarios.

QR Code Recognition / QR Code Parsing | Online QR Code Scanning and QR Code Recognition Methods

The QR code recognition and QR code parsing functions of this QR code generator are based on advanced image recognition algorithms, which can accurately extract data from QR codes and serve as a professional QR code recognition tool. Whether using a mobile phone camera or uploading images on a computer, online QR code recognition can be completed. The following introduces the QR code recognition methods and common operations:

  • Supports parsing various standard QR Code formats, including QR Code Model 1/2, Micro QR Code, etc.
  • Automatically handles image distortion, rotation, scaling and other issues to improve the success rate of QR code recognition
  • Real-time parsing feedback with visual display of the online QR code scanning process
  • Supports parsing QR code content containing Chinese and special characters
  • Automatically identifies the QR code type and displays the parsing result in an easy-to-read format, convenient for converting QR codes to links or text
  • All parsing processes are completed locally without uploading images, protecting privacy and security

How to scan a QR code? On a mobile phone, open the camera or WeChat, Alipay and other scanning functions, and point at the QR code to automatically recognize it. How to scan a QR code on a computer? In this QR code generator, click the "Upload Image" button to select a local QR code image, or directly drag and drop the image to the designated area. The tool will automatically perform online QR code recognition and display the result. Either way, QR code scanning and parsing can be completed quickly.

QR Code Generation / Creation Features | Free QR Code Maker

This free online QR code generator provides highly customizable QR code generation functions to meet QR code creation needs in different scenarios. No download or installation is required; just open the web page to use it. The generated QR code images are extremely clear and meet the requirements of QR code scanning and QR code recognition:

Custom Style

Supports setting QR code foreground color and background color to create branded colorful QR codes and enhance visual effects. You can customize exclusive color schemes according to the brand VI system to enhance brand recognition and create unique QR codes without affecting QR code scanning and recognition.

Logo Embedding

You can add a custom logo image to create an exclusive QR code. Built-in logo background optimization improves the contrast between the logo and QR code while ensuring QR code readability, making QR codes with logos to meet personalized QR code image needs.

Size Adjustment

Supports size adjustment from 100 to 800px to meet different usage scenarios: small sizes are suitable for screen display, and large sizes are suitable for printing, posters and other scenarios. Flexibly create QR codes of different specifications to ensure the success rate of online QR code recognition.

Corner Radius Configuration

Newly added QR code corner radius adjustment function (0-50px) allows you to create rounded QR codes, improve visual aesthetics, and meet personalized QR code creation needs without affecting QR code scanning performance.

Error Correction Level

Provides 4 levels of error correction configuration:
• Level L (7%): high density, suitable for unobstructed scenes
• Level M (15%): balanced, default recommendation
• Level Q (25%): high error correction, suitable for scenes that may be slightly damaged
• Level H (30%): highest error correction, suitable for outdoor, printed materials and other wear-prone scenes
Choosing an appropriate error correction level ensures that QR code images can still be correctly recognized even when partially blocked.

Free and Unlimited

This QR code generator is free to use online, with no usage limit, no watermark, and no feature restrictions. You can create and download QR codes unlimited times. It is your free QR code generation tool and supports online QR code recognition at any time.

Technical Implementation Principles | Professional QR Code Tool

This online QR code generator is built on modern web technologies. The core implementation principles are as follows, ensuring the professionalism and stability of QR code generation and parsing, providing underlying support for QR code recognition, QR code scanning, and QR code to link functions:

🔧 Core Technology Stack

  • Frontend framework: Vue 3 + TypeScript (Nuxt 3)
  • QR code generation: qrcode.js library (based on Canvas rendering)
  • QR code parsing: jsQR library (pixel-level image analysis for QR code recognition)
  • UI interaction: native CSS + responsive design

📊 QR Code Recognition / QR Code Parsing Principle

  1. Convert the uploaded image to Canvas pixel data
  2. Perform grayscale and binarization processing on pixel data
  3. Locate the QR code's position detection patterns (the three corner squares)
  4. Correct image distortion and restore the QR code matrix
  5. Decode the matrix data according to QR Code encoding rules
  6. Restore and display the original text content, completing QR code recognition and QR code parsing

🎨 QR Code Generation / Creation Principle

  1. Format the input content according to the scenario type (such as mailto:, tel:, WIFI: and other protocols)
  2. Encode the formatted content (numbers/letters/Chinese, etc.)
  3. Add error correction codes according to the error correction level
  4. Generate the QR Code matrix data (0/1 representing black and white pixels)
  5. Draw position detection patterns and data modules on Canvas
  6. Apply custom styles (color, size, corner radius) and logo
  7. Export as PNG format image, completing QR code creation and generating QR code images

🔐 Local Processing Mechanism

  • All image processing, data parsing/generation are completed in the browser
  • Use URL.createObjectURL to process local files without uploading to the server
  • Canvas API provides pixel-level operation capabilities
  • Clipboard operations use the Web Clipboard API (fallback for older browsers)
  • File download is implemented by creating an a tag to simulate download behavior
  • 100% local processing, ensuring user data security and privacy, and ensuring that QR code recognition and QR code parsing processes do not leak information

This implementation ensures the security of user data while leveraging the browser's hardware acceleration capabilities to provide a smooth operating experience. This online QR code generator uses lazy loading to load core libraries, optimizing initial loading speed and ensuring the page is quickly available. It is your best choice for free QR code creation, QR code parsing, and online QR code recognition.