In industrial, retail, and logistics environments, barcode printers commonly use two major programming languages: ZPL and EPL. Both originate from the Zebra technology ecosystem, yet they differ significantly in features, compatibility, and use cases.
This guide explains the key difference between ZPL and EPL, and how to convert EPL to ZPL efficiently for modern barcode printers.
What Are ZPL and EPL Printer Programming Languages?
ZPL (Zebra Programming Language)
Developed by Zebra Technologies, ZPL is designed for high-performance label printing. It supports graphics, QR codes, barcodes, fonts, variable data, template logic, and even RFID—making it ideal for industrial, manufacturing, and logistics systems.
EPL (Eltron Programming Language)
Originating from early Eltron printers (later acquired by Zebra), EPL features a lightweight command set with fast execution, best suited for small labels or receipt printing in retail and office environments.
In short:
• ZPL offers more advanced functionality for complex or high-resolution label printing.
• EPL is simpler and faster, ideal for basic text or barcode printing tasks.
What's the Difference Between ZPL and EPL Printer Languages?
The EPL vs ZPL comparison table below helps clarify their capabilities and which environment each fits best.
Comparison Aspect | ZPL | EPL |
Supported Printers | Widely used in today's industrial and desktop label printers | Older or entry-level models |
Printing Features | Graphics, 2D codes, RFID, variable templates | Primarily text and barcodes |
Template Complexity | Supports logic and variables | Limited commands, fixed format |
Images & Fonts | Supports multiple fonts and image downloads | Built-in fonts only |
Printing Speed | Slightly slower but highly flexible | Faster but less customizable |
Compatibility | Not compatible with EPL (conversion required) | Not compatible with ZPL |
Ideal Use Cases | Manufacturing, healthcare, logistics, warehousing | Retail, shipping, receipts |
Why Convert EPL to ZPL?
Many businesses still rely on legacy EPL templates, but as newer Zebra models increasingly focus on ZPL, migration and compatibility issues have become common.
Typical scenarios include:
• Printer upgrades: Moving from an older EPL model such as GK420d to a ZPL-based ZD421.
• System updates: ERP, WMS, or label management systems that support ZPL templates only.
• Mixed production lines: Some devices still use EPL, others ZPL, requiring unified template management.
Understanding how to convert EPL to ZPL efficiently can dramatically reduce maintenance costs and transition downtime.
Common Methods to Convert EPL to ZPL
Method 1: Using Zebra Official Tools
Zebra provides utilities such as Zebra Setup Utilities or the Label Conversion Tool to import EPL files and automatically generate ZPL output.
Quick steps:
1. Launch Zebra Setup Utilities → select your printer
2. Import the EPL template
3. Choose “Export to ZPL”
4. Verify print quality and font alignment
Perfect for general office users who need a quick and accurate conversion.
Method 2: Using Third-Party Scripts or Converters
For bulk conversions, open-source tools like the “epl2zpl converter” can automate template translation.
Pros: Batch processing, customizable logic
Cons: Accuracy depends on original formatting; some images or fonts may require manual adjustments.
Method 3: Rebuilding Templates from Scratch
When templates are complex or poorly formatted, the most reliable solution is to rebuild them using professional design software such as NiceLabel, Bartender, or HPRT LabelDesigner.
Pros: Clean structure, long-term maintainability
Cons: Requires more time initially
Conversion Tips & Considerations
• DPI Differences: Output size varies between 203/300/600 dpi models.
• Font Mapping: EPL fonts (A/B) don't exactly match ZPL fonts (0/A/B).
• Graphic Commands: EPL image commands aren't directly compatible with ZPL.
• Label Alignment: Always recalibrate label origin and spacing after conversion.
EPL vs ZPL FAQs
Q1: Is ZPL better than EPL?
Yes. ZPL provides more advanced capabilities, including graphic, multilingual, and variable template support—ideal for modern applications.
Q2: Can I use an EPL file on a ZPL printer?
Not directly. You'll need to use a conversion tool or enable a printer's emulation mode.
Q3: Which printers support both ZPL and EPL?
Some Zebra desktop models (e.g., GX420, GK420) support both languages, though newer models tend to be ZPL-only.
Q4: How do I check which language my printer uses?
Print a configuration label—it will show “ZPL Mode” or “EPL Mode.”
Q5: Do iDPRT printers support ZPL?
Yes. Many iDPRT industrial and commercial printers include ZPL emulation, ensuring seamless compatibility with Zebra templates and existing systems.
Choosing the Right Printer Programming Language: ZPL or EPL?
Selecting the appropriate printing language is crucial for the long-term stability of your labeling system.
If you're upgrading printers or integrating legacy systems, we recommend adopting the more versatile ZPL standard.
For users still relying on older EPL templates, choose printers that support ZPL command compatibility to ensure a smooth, trouble-free transition without redesigning templates.
iDPRT Barcode Printers and Language Support
iDPRT barcode printers are compatible with multiple mainstream programming languages, including ZPL, EPL, ESC/POS, and TSPL. They can integrate quickly without altering your existing system architecture.
With exceptional compatibility and stability, iDPRT solutions are widely used across manufacturing, warehousing, pharmaceuticals, and retail, helping businesses improve system adaptability and operational efficiency.
For more information on printing language compatibility or tailored printer selection advice, contact the iDPRT technical team for a customized solution.
