CONNECTIONS. Most all-purpose portable printers offer both Wi-Fi and USB for connections. Some support PictBridge, as well, for printing photos directly from cameras that support the spec. If you want to connect cable-free via Wi-Fi, make sure the printer supports Wi-Fi Direct. And if you might need to print straight from your phone or tablet, make sure the printer also supports mobile printing with your specific device. (Credit: PCMag) What differentiates this model from most portable printers is the addition of MFi (Made For iPhone), making it easier to sync with Mac and iOS devices over Bluetooth. With a battery that lasts for 100 prints and no ink limitations, you really can print from anywhere with this rugged and highly portable device. Resolutions for these printers can be as low as 203 by 200dpi, which is fine for 10- or 12-point text, but can leave smaller fonts and graphics looking a little ragged. However, it's not hard to find models with 300dpi resolution, which is at the lower end of laser quality. And unlike the paper you may remember from fax machines, paper for many thermal printers is available in cut-sheet and fanfold formats, as well as rolls.

This miniaturization marvel combines a scanner and full-color inkjet printer in a device that will fit in a travel bag. It also has a small display, an automatic document feed (ADF), Wi-Fi, and a rechargeable battery. Because the printheads are so similar between both types of thermal printers, the output quality is similar as well. The key practical difference between the two types is that you have to buy special paper for the more common thermal printers, but don't need ribbons, while you have to buy ribbons for the thermal wax transfer printers, but don't need special paper. Note that the ribbons retain what amounts to a negative image of anything you print, which means that if you're printing anything meant to be private, you need to be careful where you discard them. Start with an old-fashioned fax machine that prints on thermal paper (that is, without ink), throw out the parts that handle faxing, and what you're left with is a basic monochrome printing mechanism. Add your choice of Wi-Fi, Bluetooth, and USB connections, a battery, and a driver for your PC's operating system or an app for your mobile device, and you've got a portable, monochrome thermal printer. The CP1500 weighs 2.5 pounds with the paper cassette and its dye roll inserted, but not the optional battery, which can print up to 54 photos per charge, according to Canon. This model can print from an SD or microSD card, a USB thumb drive (you get a Type-C, not Type-A, port for that), an iOS or Android phone or tablet, or a macOS or Windows PC, and it can connect via USB cable or Wi-Fi.Portable photo printers are just what the name indicates: printers that are designed to work on battery power and are strictly for churning out snapshots. The key differentiator for these printers is the size of the prints.

PRINT TECHNOLOGY. Virtually all portable photo printers use one of three technologies, and inkjet technology, notably, is no longer on the list. (Epson offers an inkjet for photos up to 5 by 7 inches, but it doesn't qualify as "fully portable" by our definition for this roundup, since it works only with AC power.) (Credit: Zlata Ivleva) It's decidedly not for anyone who needs color output, but the PJ883 is great for traveling salespeople or contractors who need to generate documents, bills, or agreements on the spot. Brother also offers lesser, lower-cost models for folks who don't need to pay the premium for the PJ883's plethora of connection types. (Sometimes, just a USB will do.) It's not hard to find standard inkjet printers that are small and light enough to take with you on a business trip or vacation, so you can print a letter- or legal-size document in your hotel room before a meeting, or print photos of a family picnic. To count as "portable" for purposes of this roundup, however, the printer also needs the ability to run on battery power, at least as an option. The battery will let you print anywhere, including in your car or while on that picnic, with no AC outlet in sight. These true portables are rare, but they do exist—Canon, Epson, and HP have a handful. Their offerings even fall into two subcategories: single-function printer, and all-in-one printer. multiPROMOS' mission is to provide its users with an aggregation service of temporary specials from some distribution brands. You can connect the printer to computers and smartphones through USB or Bluetooth, but since there's no Wi-Fi connectivity, you can't use Apple AirPrint, Google Cloud Print, Mopria, and other connection that rely on Wi-Fi.

Portable Label Printers

At first blush, the thought of a fully portable printer, designed to run on battery power, may seem like a total oxymoron: Carry your Canon? Haul your HP? Truth is, only a few current portable printers can serve as the kind of all-purpose printing tool you might picture when you think of a typical desktop printer. But like most tech today, printers have seen some serious diversification and specialization. Now, you can find a wealth of portable printers that aren't all-purpose but do a single thing well. Thanks to their compact and lightweight designs, you can carry them around using batteries to power them, making them incredibly versatile devices.

You can connect devices you want to print from, such as laptops, tablets, and smartphones, via Wi-Fi or Bluetooth. Printers for wallet-size photos are among the most portable printers today, and this Kodak model serves as a prime example of why. One big advantage it has over printers for larger photos is that keeping the photo size to 2 by 3 inches means the chassis can be trimmed down. The Step Instant measures all of 1 by 3 by 5 inches (HWD) and weighs just under a pound. As with much of its competition, it's designed as a phone and tablet accessory, offering Bluetooth and NFC as the only connection options, printing strictly from iOS and Android phones and tablets. This small and stylish inkjet requires a power point as there’s no battery option, but it’s the perfect portable printer in all other respects. Weighing just 6.5kg, it fits easily in a bag, and the ‘X’ edition here includes a fabric cover to protect it in transit. It also acts as a mat to catch your printed paper.A portable AIO is of obvious interest to anyone who needs to both scan and print (including for copying) while on the go. But even within that group, it's not for everyone. If you usually need scanning only or printing only, you could be better off with a separate printer and scanner, to let you carry just the one you need on a given trip. But if you usually need both scanning and printing, the OfficeJet 250 will be less cumbersome to set up. Even better, it may be lighter that the combined weight of two units. HP has managed to shrink the inkjet printer to the size of a cigar box while adding a battery compartment. The result is a highly portable device that can turn out crisp color documents at a rate of 10 per minute in mono or 7 in color.