ZPL vs EPL: Which Label Language Should You Use?

If your Zebra desktop printer says it supports both ZPL and EPL, you might wonder which to use. The honest answer for new projects is short: ZPL. But the reasoning is worth understanding, and there are situations where EPL is still the right call.

Where they come from

EPL originated with Eltron printers, and it’s built around simplicity. A typical text line is one short command that contains position, rotation, font, magnification and the text itself. It was designed for printers with very little memory, and it shows in how compact it is.

ZPL came from Zebra and grew into a far larger language, with scalable fonts, graphics commands, many barcode types, field formatting and a long list of printer controls. Over the years it has become the language the rest of the industry copies, which matters a lot in practice.

How they handle fonts

This is where the difference is clearest. EPL gives you a small set of fixed bitmap fonts and lets you magnify them in whole steps. You can’t smoothly pick a size, and you can’t load a TrueType font. Text looks consistent and a bit blocky.

ZPL has the bitmap fonts too, plus the scalable font 0 and the ability to download TrueType fonts. You can specify height and width in dots, change the character set with ^CI, wrap text in field blocks and print images for anything else. If the way text looks matters to you, there’s no contest. Our ZPL vs EPL fonts page lays the differences out side by side.

When EPL is still reasonable

There are honest reasons to stay with EPL. If you have a working setup that prints simple labels, rewriting it brings risk without benefit. If your software only produces EPL and replacing it is expensive, you may not have a choice. And for very plain labels with a name, a code and a barcode, EPL does the job and is easy to read.

But look ahead. EPL is a legacy language, new printer features arrive in ZPL, and finding people who know EPL is getting harder. If a redesign is on the horizon, it’s the moment to move.

What triggers a switch

In practice, people move to ZPL when someone asks for something EPL can’t do. A new market needs a different alphabet. A customer insists on a specific typeface. The design team wants smooth text at arbitrary sizes. Or you add printers from another manufacturer and find they all speak ZPL, not EPL.

If any of those apply, plan the move rather than waiting for a crisis. The Unicode and code pages and language support pages explain what ZPL gives you for multilingual labels.

How to migrate without pain

Do it one label at a time. Pick a simple, high-use label, rebuild it in ZPL, and print it next to the EPL original. Start by matching the physical size of the text, not the font number, because EPL fonts and ZPL fonts don’t correspond exactly. Convert magnification into dots, as described in font sizes by DPI, and use the live preview to check layout before printing.

Barcodes need special care. The commands differ, and you should scan every converted barcode with your production scanners, not just eyeball them.

Check the printer’s language mode, too. On dual-language printers it’s a setting on the device, and sending ZPL to a printer in EPL mode gives garbage or nothing. Print a configuration label to see which mode is active. If you’re running mixed fleets, keep a clear record of which printer is set to what.

What about speed and size?

Both are compact, so you won’t see much difference for simple labels. ZPL pulls ahead when you want to store formats on the printer, reuse graphics or fill in variable data into templates, which can cut the data you send per label. For plain one-off labels, the difference is academic.

Learning curve

EPL is quicker to pick up because there’s less of it. ZPL takes longer to learn fully, but you don’t need all of it. The ten commands in the 10 ZPL font commands every developer should know cover most text labels, and our cheat sheet gives you a printable reference.

And what about other printer brands?

The larger question for some buyers isn’t ZPL versus EPL but Zebra versus everyone else. Many other makers support ZPL, few support EPL, and fonts behave differently on each. That’s covered in Zebra versus other label printers.

The recommendation

For anything new: ZPL. For an existing, stable EPL setup with no pressure to change: leave it, but document it and plan an exit. For a project that needs fonts, languages or flexibility: move to ZPL now, one label at a time. For more on the font side of that decision, read how to choose the right ZPL font.