Free Barcode Generator - Create Code128 Barcodes Online
Generate Code128 barcodes from text instantly. Download as PNG image for printing, scanning, and inventory management.
Features of Our Barcode Generator
- Code128 encoding - Industry-standard barcode format
- PNG download - Save barcode as image
- Text display - Shows encoded text below barcode
- High quality - Crisp, scannable output
- Client-side - No data sent to servers
- Free to use - No registration needed
About Code128
Code128 is a high-density linear barcode symbology. It's one of the most versatile and widely-used barcode types, supporting letters, numbers, and symbols.
Key Features
- Compact, high-density encoding
- Supports all 128 ASCII characters
- Built-in check digit for accuracy
- Widely supported by scanners
Supported Characters
| Category | Characters |
|---|---|
| Uppercase | A-Z |
| Lowercase | a-z |
| Numbers | 0-9 |
| Symbols | !"#$%&'()*+,-./:;<=>?@ |
| Spaces | Supported |
Maximum length: Typically 30 characters for readability
How to Use
- Enter the text to encode (alphanumeric + symbols)
- Click "Generate Barcode"
- View the barcode preview
- Download as PNG if needed
- Print or use in your application
Common Use Cases
Shipping & Logistics
- Package tracking numbers
- Shipping labels
- Warehouse location codes
Inventory Management
- Product identification
- Asset tracking
- Stock labels
Access Control
- Entry passes
- Event tickets
- Member cards
Manufacturing
- Part numbers
- Serial numbers
- Batch codes
Other Barcode Types
| Type | Use Case | Format |
|---|---|---|
| Code128 | General purpose | Alphanumeric |
| UPC-A | Retail (US) | 12 digits |
| EAN-13 | Retail (International) | 13 digits |
| QR Code | URLs, data | 2D matrix |
| Code39 | Labels, naming | Alphanumeric |
FAQs About Barcode Generation
What scanner do I need?
Any standard 1D barcode scanner can read Code128 barcodes.
What's the minimum print size?
For reliable scanning, print at least 1 inch wide with clear contrast.
Can I create colored barcodes?
For best scanning, use black bars on white background. Colors may reduce readability.
Is there a character limit?
Technically no, but longer text creates wider barcodes. Keep under 30 characters for practicality.
Are generated barcodes unique?
The barcode encodes exactly what you input. Uniqueness depends on your text.
Best Practices for Printing
- Use high contrast (black on white)
- Maintain quiet zones (white space) on sides
- Print at minimum 300 DPI
- Test scan before mass printing
- Avoid scaling down excessively
Why Use Our Barcode Generator?
- 100% free - No limits or fees
- Instant creation - Generate in seconds
- Download ready - PNG format
- Privacy first - No server processing
- High quality - Scannable results