What Is PCL in Printers? Printer Command Language Explained

What is PCL?

PCL stands for Printer Command Language. It is a page description language that acts as the instructions a computer sends to a printer to render text and graphics. Unlike a document file that contains the actual content, a PCL file contains commands that tell the printer how to place each element on the page. It is one of the most widely used printer languages, especially in business and office environments.

Originally developed by HP, PCL has become a standard among many printer manufacturers. Although modern printers may support multiple languages, PCL remains important because of its long history and broad compatibility. If you have ever printed from a Windows PC to a laser printer, you have likely used PCL without knowing it. For a deeper look at how printer languages fit into the driver stack, see our guide on printer driver languages.

How PCL communicates with a printer

When you hit print, your computer's driver converts the document into a series of PCL commands. These commands describe fonts, margins, colors, and graphics. The printer receives these commands and interprets them to create the printed page. PCL is a command-based language, meaning it issues specific instructions for each element rather than describing the entire page in a high-level format.

This approach makes PCL efficient for many everyday printing jobs. It is especially well suited for text documents and simple graphics. For more complex page layouts, other languages like PostScript may offer more flexibility, but PCL remains a fast and reliable choice. To see how PostScript differs, read our explanation of PostScript.

PCL 5 and PCL 6: What's the difference?

PCL has evolved through several versions. PCL 5, introduced in the early 1990s, added support for vector graphics and scalable fonts. PCL 5e and PCL 5c extended it with improved color and enhanced features. PCL 6, also known as PCL XL, is a substantially updated version designed for higher performance and smoother rendering of complex pages.

Most modern printers support both PCL 5 and PCL 6. PCL 6 is the default choice for current drivers because it offers faster printing and better handling of modern document formats. However, PCL 5 remains useful for compatibility with older software and device drivers.

When you are evaluating a printer, pay attention to the exact version listed. Some models may only support PCL 5 or PCL 6, while others list both. For a broad look at printers that include both, you can browse our best laser printers roundup.

When does PCL 5 matter?

PCL 5 is still relevant if you rely on legacy applications or print from older systems. Some enterprise environments have software that expects PCL 5 commands. It also serves as a fallback language when a printer's PCL 6 driver is unavailable.

For basic text printing, PCL 5 is entirely sufficient. If your printing needs are simple and you mainly output letters and internal reports, a printer that supports PCL 5 will work fine. Just be aware that you might not need the extra speed of PCL 6 for these tasks. If you are shopping for a monochrome laser, check our best monochrome laser printers for models that still offer PCL 5 compatibility.

When does PCL 6 matter?

PCL 6 is the preferred language for modern business printing. It handles complex page elements, such as transparent graphics, gradients, and high-resolution images, with less processing time. This makes it ideal for print-heavy offices that produce frequent, detailed documents.

If you are buying a printer for a busy office, ensure it supports PCL 6. Many current laser printers from major brands list PCL 6 support alongside other languages. PCL 6 helps keep print jobs moving quickly and reduces the load on the printer's processor. Need color output as well? Our best color laser printers list includes many models with PCL 6 support.

PCL vs PostScript

PCL and PostScript are the two main page description languages used in professional printing. PostScript is a full programming language that offers precise control and is preferred for graphics design, publishing, and high-end imaging. PCL, on the other hand, is optimized for speed and simplicity in typical office documents.

Most business printers support both, but some models from manufacturers like HP and Canon may emphasize PCL. If you work with complex PDFs or professional design software, you may want a printer with PostScript support. You can read our detailed PCL vs PostScript comparison to understand the trade-offs.

How to check PCL support in a printer

Printer specifications usually list supported printer languages. Look for PCL 6 or PCL 6/5c in the spec sheet. If you see only 'HP PCL' or 'PCL' without a version, it often means the printer supports PCL 6. Some manufacturers may also mention PCL 5e for older compatibility.

If you are buying online, check the product page or the PDF manual. Many business-class printers from HP, Canon, and Brother list PCL compatibility prominently. For inkjets, the situation is different: many home inkjets use proprietary drivers and do not support PCL at all. If PCL matters to you, focus on laser printers, such as those in our best all-in-one printers list.

Modern printing standards: IPP Everywhere and Mopria

While PCL is a dominant language, the industry is also moving toward universal standards. The Printer Working Group's IPP Everywhere standard allows personal computers and mobile devices to print without vendor-specific software. The standard supports printer discovery, two-sided printing, and a range of media types.

Another important standard is Mopria, which provides mobile printing and scanning apps for Android and Windows devices. Mopria lets you print from your phone or tablet to certified printers without installing extra drivers. These standards work alongside PCL and PostScript, adding flexibility for modern workflows. They are especially useful if you print from multiple device types.

Choosing a printer based on PCL support

When you shop for a printer, decide which language versions matter for your environment. If you only have current operating systems and software, PCL 6 is sufficient. If you must support older applications, choose a model that also handles PCL 5.

Laser printers are the most likely to include PCL support. If you are considering an inkjet, check whether it offers PCL or only uses a proprietary driver. For most office work, a laser printer with PCL 6 is a solid choice. You can browse our roundup of best HP printers for models that integrate well with HP's PCL lineage.

What to pick for your use

Questions

Is PCL the same as PostScript?

No, PCL and PostScript are different page description languages. PostScript is more flexible for complex graphics, while PCL is faster for typical office documents. You can see a direct comparison in our PCL vs PostScript guide.

Does every printer support PCL?

Not all printers, especially lower-cost inkjets, may only use proprietary drivers. Most business laser printers support PCL 6. Always check the specification sheet before buying.

Should I choose PCL 5 or PCL 6?

PCL 6 is the default for modern use. PCL 5 is useful for compatibility with old software. Many printers support both, so you can have the best of both worlds.

Can I use PCL on my mobile device?

Mobile printing typically uses standards like IPP Everywhere and Mopria, which do not require PCL. These standards work with modern printers and apps.

Does PCL 6 require more printer memory?

PCL 6 may demand more memory for complex page elements, but most modern printers have enough. If you print large graphics, consider a model with memory expansion options.