QR Code Batch Generator

Tool Introduction

“QR Code Generator” is a powerful online tool designed to help users quickly and conveniently convert various information (such as URLs, plain text, electronic business cards, WiFi information, emails, SMS, etc.) into standard and recognizable QR code images. This tool supports multiple custom configurations, including QR code size, foreground color, background color, error correction level, and even allows embedding a logo, making your QR code more personalized and branded. Whether for personal sharing or commercial promotion, you can easily create QR codes that meet your needs.

How to Use

1. Select Content Type: On the tool interface, first select the type of content you want to generate a QR code for, such as “URL”, “Text”, “Business Card”, or “WiFi”.
2. Enter Corresponding Content: According to the selected type, fill in your information in the specified input box. For example, if you select “URL”, enter the complete URL address; if you select “Text”, enter any text; if you select “Business Card”, fill in fields such as name, phone, and email.
3. Configure QR Code Style: You can adjust various parameters of the QR code according to your needs, including:
   • Size: Choose an appropriate pixel size to adapt to different display and printing requirements.
   • Foreground/Background Color: Customize the color of the QR code to enhance visual appeal.
   • Error Correction Level: Select different error correction levels (L, M, Q, H) to handle partial damage or obstruction.
   • Embed Logo: If needed, you can upload a small image as a logo, displayed centered in the QR code.
4. Generate and Download: Click the “Generate QR Code” button to see the generated QR code in the preview area. After confirming it is correct, click the “Download” button to save the QR code image locally (supports common formats such as PNG, JPG).

Usage Examples

Here are some practical examples of using this tool to generate QR codes:

• Example Input (URL):

  https://www.example.com/

  Expected Output: A QR code image containing this URL information. Users scanning the code will be directly redirected to the website. You can set a black foreground, white background, error correction level M, and choose 500x500 pixels.

  Specific Operation Demo: In “Content Type”, select “URL”, paste the URL into the input box, adjust colors and size, click “Generate”, then click “Download”.

• Example Input (Text):

  Welcome to follow our official account: [Official Account Name]

  Expected Output: A QR code image containing the above text information. Users scanning the code can directly display this text on their phone, making it easy to copy or read. It can be set with a green foreground, white background, and an embedded small official account logo.

  Specific Operation Demo: In “Content Type”, select “Text”, enter the above text, upload the logo image, click “Generate”, then click “Download”.

Frequently Asked Questions

• Q: What content types does this tool support for generating QR codes? A: We support various mainstream content types, including URL, plain text, electronic business cards (VCard), WiFi connection information, email, SMS, and image links, etc.
• Q: What formats do the generated QR code images support? Can I customize the style? A: The QR code images generated by this tool support common image formats like PNG, JPG for download. You can fully customize the QR code's style, including foreground color, background color, border, size, error correction level, and even add a custom logo.
• Q: What is the purpose of the QR code's error correction level? How should I choose? A: The error correction level refers to the QR code's ability to be correctly recognized by scanning devices even when partially damaged or obscured. This tool provides four levels: L (7%), M (15%), Q (25%), H (30%). A higher error correction level means a more complex QR code image (more pixels) but stronger resistance to damage. Generally, M or Q is sufficient. If the QR code might be printed on easily worn media, you can choose H.
• Q: Is this online QR code generator free or does it have usage restrictions? A: This QR code generator provides a completely free service, no registration or login required, no quantity or time limits. You can create high-quality QR codes anytime, anywhere for free.

Notes

• Input Data Format: Ensure that the URL you enter is complete and accessible (including http:// or https://). For text content, please check for typos or sensitive information. For business card information, please fill it in according to the standard format.
• Logo Image Requirements: If you choose to embed a logo, please upload a square logo image with a transparent background (PNG format). The size should not be too large, generally recommended to be 1/5 to 1/4 of the overall QR code size, to ensure scanning recognition rate.
• Test Scanning: Before formal use or publication, it is strongly recommended that you test the generated QR code multiple times with different phones and scanning applications to ensure it can be scanned normally and points to the correct content.
• Privacy and Security: This tool does not store any of your input data when generating QR codes. All processing is done locally in your browser (or temporarily on the server and then deleted), so please feel free to use it.

Uses of QR Codes

QR codes, as a data encoding method, play an extremely wide role in modern life:

• Marketing and Advertising: Scan to go directly to product detail pages, event registration, coupon redemption, APP downloads, social media follows, etc.
• Information Sharing: Quickly share URLs, contact information (business cards), WiFi passwords, map locations, text messages, etc.
• Payment and Transactions: Mobile payments (WeChat Pay, Alipay), collection codes, online store shopping.
• Identity Recognition and Authentication: Electronic tickets, boarding passes, membership cards, visitor registration, product traceability and anti-counterfeiting.
• Smart Home and IoT: Device pairing, control commands, smart device manuals.

Introduction to QR Code Principles

QR Code (Quick Response Code) is a matrix barcode developed by Denso Wave in Japan in 1994. Its core principle is to encode data into black and white modules (small squares) and organize them according to specific arrangement rules. These modules represent binary data, which is recognized and decoded by optical scanning devices (such as mobile phone cameras). QR codes can store more information and have fault tolerance due to their unique structural design:

• Position Detection Patterns: Three “finder patterns” in the corners, used for quick positioning and image correction.
• Alignment Patterns: Increase with the size of the QR code, used for alignment and distortion correction.
• Data Encoding Area: The area that actually stores user data, dispersed after error correction encoding.
• Error Correction Mechanism: Uses Reed-Solomon code for error correction. Even if part of the QR code is damaged, the original data can be recovered. This is why QR codes can still be recognized even with a logo or partial obstruction.