1) Shipping label size support: 4×6 (100×150mm)
Shopify shipping labels are commonly printed in 4×6 format. Your printer should support:
- • 4×6 labels
- • Label width up to ~4 inches (100mm+)



A Shopify shipping label printer is typically a 4×6 (100×150mm) direct thermal printer designed to print carrier-compliant shipping labels without ink. For most sellers, the best choice is a reliable 4-inch thermal printer with fast printing speed, stable media sensing, and connectivity that matches your workflow (USB for desktops, Bluetooth for tablets).
Many new Shopify sellers ask the same practical question when setting up shipping: What is the recommended shipping label printer for Shopify? The real answer depends on how you fulfill orders—from a desktop packing station, a small home office, or a more mobile workflow.
This guide covers how to choose the right Shopify shipping label printer, how to set it up correctly, and how to print postage and courier shipping labels efficiently—without common sizing or scaling issues.
Fast, reliable, and simple for most Shopify sellers who print from a computer.
Built on the SL42 platform with added Bluetooth connectivity, it enables cable-free printing and flexible placement—ideal for iPad and tablet workflows.
Compact and roll-friendly, the SL41 handles various label sizes and high-volume shipping with stable, continuous printing.
If you’re choosing between these three:
Technically, yes—you can print labels on A4/Letter paper, cut them, and use pouches or tape.
A new Shopify seller on Reddit asked the classic question: is it worth “biting the bullet” and buying a label printer instead?
Short answer: yes. Once you ship consistently, a regular printer becomes the bottleneck. That’s why a dedicated Shopify thermal shipping label printer is the standard:

If you ship more than “occasionally,” upgrading to a thermal label printer is usually the right move.
When small business and ecommerce sellers choose a thermal shipping label printer for Shopify, they often overlook the specs that actually matter in day-to-day fulfillment. Focus on the following:
Shopify shipping labels are commonly printed in 4×6 format. Your printer should support:
If you print in batches (10, 30, 50+ labels), speed matters—but so does consistency. Look for:
Shipping labels don’t come in just one format. Depending on the carrier and region, they may be roll-fed or fan-folded, and most are die-cut.
Make sure the printer supports:
Most Shopify label printing happens through a browser print workflow on Mac/Windows. A good experience includes:
Beyond the technical factors mentioned above, Shopify sellers should also consider the brand behind the hardware—including long-term stability, manufacturing experience, and proven performance in real shipping workflows.
HPRT is a globally recognized thermal printer brand with years of experience in barcode and label printing. HPRT label printers are widely used across retail, logistics, and ecommerce environments, making them a reliable choice for Shopify sellers who value consistency and long-term usability.
Below are three proven HPRT 4x6 shipping label printers compatible with Shopify Shopify, eBay, and Etsy, together covering small-scale and batch shipping needs across both desktop and wireless workflows.


The SL42 4-inch shipping label printer is a dependable, no-nonsense choice for most e-commerce and Shopify sellers who print USPS, FedEx, or UPS shipping labels from a computer.
It delivers fast thermal printing with automatic label positioning and smooth media feeding, while supporting common shipping label formats without unnecessary complexity. With external label holders, it can also handle a variety of label types and sizes.

The SL42BT shares the same strong performance and label handling as the SL42, but adds Bluetooth connectivity for a cleaner, cable-free setup.
With the companion app, it makes printing Shopify shipping labels and packing slips from an iPad or tablet straightforward—especially useful when your packing area has limited USB access.

The SL41 is a step up for sellers who need greater media flexibility or handle regular batch printing.
This compact 4-inch direct thermal shipping label printer supports a wide range of label types—including roll and fan-fold formats—with enhanced sensing for different media, making it well suited for sustained shipping runs and labeling needs beyond standard shipping labels.
| Model | Connection | Print Width | Resolution | Print Speed | Media Support | Best For |
|---|---|---|---|---|---|---|
| HPRT SL42 | USB | Up to 108 mm (4.25") | 203 dpi | Up to 150 mm/s | Roll or fan-fold, die-cut, black-mark | Desktop Shopify sellers who want simple, plug-and-play printing |
| HPRT SL42BT | USB, Bluetooth | Up to 108 mm (4.25") | 203 dpi | Up to 150 mm/s | Roll or fan-fold, die-cut, black-mark | Wireless or iPad-based workflows with a cleaner, cable-free setup |
| HPRT SL41 | USB | Up to 108 mm (4.25") | 203 dpi | Up to 152 mm/s | Roll or fan-fold, die-cut, continuous, black-mark | High-volume shipping and mixed label sizes (shipping, SKU, carton) |
Once you have your hardware, the next step is configuration. Most label printing issues are caused by paper size or scaling settings, not by Shopify itself.
Make sure the printer appears correctly in your system’s printer list before continuing.
On your computer:
If the paper size is set to A4 or Letter, labels often print tiny, sideways, or cropped.
Once this setup is done, you usually won’t need to change it again.
Once your printer is set up, creating and printing shipping labels in Shopify becomes a straightforward daily process.
If you ship multiple orders at once:
Even with the correct setup, small print settings or media detection issues can still cause label problems during daily use.
Choosing a Shopify shipping label printer comes down to how you ship—your order volume, workspace, and label formats. A reliable 4×6 direct thermal printer with stable media detection and the right connectivity will cover most sellers’ needs.
Once the printer is set up correctly, printing shipping labels in Shopify becomes a simple, repeatable part of your daily workflow. Pick a model from HPRT that matches how you work today, and it will continue to support your operation as your store grows.