Barcode Generator

Tool Introduction

This online barcode generator is a free and efficient tool designed to help users quickly generate various common one-dimensional barcode images. Whether you need to create EAN-13 barcodes for products, generate CODE-128 barcodes for inventory management, or create Code 39 barcodes for internal systems, this tool can meet your needs. Users can customize barcode attributes such as size, color, and text display according to actual requirements, and it supports exporting the generated results in various mainstream image formats such as PNG, JPEG, or SVG, ensuring compatibility and clarity for printing and scanning.

How to Use

1. Enter Data to Encode: Fill in the text or numbers you wish to encode in the "Input Content" area. Please ensure that the input data complies with the specifications of the selected barcode type (e.g., EAN-13 requires 12 digits).
2. Select Barcode Type: Choose the barcode standard you need from the "Barcode Type" dropdown menu, such as EAN-13, CODE-128, Code 39, etc.
3. Configure Barcode Properties: Adjust the various parameters of the barcode as needed, including:
   • Width and Height: Set the pixel dimensions of the barcode image.
   • Margin: Set the blank area around the barcode.
   • Foreground/Background Color: Customize the color of the barcode lines and background; it is recommended to choose colors with high contrast.
   • Display Text: Check to display the corresponding readable text below the barcode.
   • Text Size/Font: Adjust the font size and style of the text below.
   • Output Format: Choose PNG, JPEG, or SVG as the final image format.
4. Generate Barcode: Click the "Generate Barcode" button, and the tool will generate the barcode image in real-time according to your settings.
5. Download Result: The generated barcode image will be displayed in the preview area. You can right-click the image to save it, or click the "Download Image" button to save it locally.

Usage Examples

Below are some practical operation examples using the barcode generator:

• Example One: Generate EAN-13 Product Barcode
  • Example Input Data: 690123456789 (This is a valid 12-digit EAN encoding prefix; the system will automatically calculate the check digit)
  • Barcode Type: EAN-13
  • Configuration: Default size, black foreground, white background, display text.
  • Operation Demo: Enter "690123456789" in the input box, select "EAN-13" barcode type, ensure "Display Text" is checked, then click "Generate Barcode".
  • Expected Output:
    The system will generate a standard EAN-13 barcode image, with "6901234567890" clearly displayed below (check digit automatically appended).
• Example Two: Generate CODE-128 Logistics Code
  • Example Input Data: PROD-A123-BATCH-X (Supports letters, numbers, and symbols)
  • Barcode Type: CODE-128
  • Configuration: Width 400px, height 100px, foreground color adjusted to dark blue (#00008B), white background, display text.
  • Operation Demo: Enter "PROD-A123-BATCH-X" in the input box, select "CODE-128" barcode type, adjust width and height, modify the foreground color, then click "Generate Barcode".
  • Expected Output:
    The system will generate a CODE-128 barcode image with dark blue lines, displaying "PROD-A123-BATCH-X" below.

Frequently Asked Questions

• Q: What barcode types does this tool support? A: Currently, it mainly supports mainstream one-dimensional barcode types, including EAN-13, CODE-128, Code 39, UPC-A, ITF, etc. More types may be supported in the future.
• Q: Are there any format or length restrictions for input data? A: Different barcode types have different data requirements. For example, EAN-13 requires 12 digits (the system will automatically calculate the check digit), CODE-128 and Code 39 support numbers, letters, and some special symbols, with relatively loose length restrictions, but excessively long data may result in a barcode that is too wide to scan.
• Q: What is the quality of the generated barcode images? A: This tool generates high-resolution PNG, JPEG, or SVG format images. SVG is a vector graphic, which will not distort no matter how much it is enlarged, making it very suitable for high-precision printing. Other formats are also optimized to meet the needs of most printing and scanning recognition.
• Q: Can I use the generated barcodes for commercial purposes? A: Yes, the barcode images generated by this tool can be used for personal and commercial purposes for free. However, please ensure that the data content you encode does not infringe any copyrights or laws.

Notes

• Data Accuracy: Please be sure to verify that the barcode data you enter is accurate. Incorrect data will cause the barcode to be unreadable or point to incorrect information.
• Barcode Specifications: Before encoding, please understand the specific encoding specifications of the selected barcode type (e.g., EAN-13 length and digit requirements) to ensure that a standard-compliant barcode is generated.
• Color Contrast: To ensure that the barcode can be quickly and accurately recognized by scanning devices, please ensure sufficient contrast between the barcode's foreground color (usually black) and background color (usually white). Avoid using similar colors or inverted colors.
• Print Test: Before batch use or formal printing, it is strongly recommended that you print a test barcode and test it with an actual scanning device to ensure its readability.
• Size and Quiet Zone: The barcode should not be too small, and there should be sufficient blank areas (quiet zones) on both sides to facilitate the scanner's recognition of start and stop characters.

Common Barcode Application Scenarios

Barcodes, as an efficient data identification technology, are widely used in various industries and fields:

• Retail Industry: EAN-13 and UPC-A are the most common barcodes in retail, used for product identification, price lookup, inventory management, and point-of-sale checkout.
• Logistics and Warehousing: CODE-128 and Code 39 are often used for package tracking, goods inbound/outbound, inventory counting, and logistics information management, improving supply chain efficiency.
• Libraries and Document Management: Used for encoding and managing books and archival materials, facilitating borrowing, returning, and searching.
• Healthcare: Barcodes on medicine packaging, medical devices, and patient wristbands help with precise identification, avoiding errors, and ensuring medical safety.
• Ticketing Systems: Movie tickets, train tickets, concert tickets, etc., use barcodes (or QR codes) for identity verification and entry management.
• Industrial Manufacturing: Product batch tracking, production line management, asset management, etc., to achieve traceability and automation of the production process.