Brother DS-640 Compact Mobile Document Scanner

Last updated date: July 1, 2020

DWYM Score

8.8

Brother DS-640 Compact Mobile Document Scanner

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We looked at the top Scanners and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Scanner you should buy.

Editor's Note July 1, 2020:
Checkout The Best Scanner for a detailed review of all the top scanners.

Overall Take

Weighing just 1.5 pounds, this scanner can easily be carried from job to job. It also has a slim design, which means you won't have any trouble storing it when it's not in use. Consumers will love that the scanner has a fast speed of 16 pages per minute, as well as the ability to optimize images and text.


In our analysis of 47 expert reviews, the Brother Brother Compact Mobile Document Scanner placed 4th when we looked at the top 14 products in the category. For the full ranking, see below.

From The Manufacturer

Scans color and black and white documents a blazing speed up to 16ppm (1). Color scanning won’t slow you down as the color scan speed is the same as the black and white scan speed. The DS-640 mobile scanner is powered via an included micro USB 3. 0 cable allowing you to use it even where there is no outlet available. Plug it into you PC or laptop and you are ready to scan.

Expert Reviews

Expert Summarized Score

6.0
1 expert reviews

User Summarized Score

8.2
1,407 user reviews

What experts liked

The economical Brother DSmobile DS-640 scans quickly and accurately
- PC Magazine

What experts didn't like

The drawback to limiting a device like this to USB connectivity is, of course, that you can’t connect to it with most mobile devices, which limits your scanning primarily to laptops and desktop PCs (and some tablets).
- PC Magazine

An Overview On Scanners

Today, the world seems to get by with far less paper, thanks to technology. Still, there are many instances where a piece of paper is the only option. When you need to turn a document or photo into an electronic file, scanners are the way to go. Even if you find you rely on it less than ever, you’ll at least occasionally need one, whether it’s at work or at home.

Digitizing paper documents isn’t the only reason to have a scanner on hand. If you have printed pictures, you can scan and save them to preserve them indefinitely. You may even be able to touch up that decades-old photo of your grandmother and make up for some of the fading that happened while it was “safely preserved” in a photo album. At the very least, you’ll be able to scan and save them to a cloud-based storage service, where they can be accessible to you and your loved ones indefinitely.

Shopping for a scanner can be overwhelming, though. Most of the scanners on the market today are not only efficient and affordable, but they provide high-quality scans. Some are better than others in those areas, though, so it can help to know what your own needs are likely to be before you buy. If you foresee regularly needing to digitize stacks of documents, a scanner with a good feeder should be high on your list. If you have boxes of photos you need to save and send to the cloud, high-quality photo scanning is a must.

Unless you’ll have a tech guru on hand to set up and troubleshoot issues with your scanner, you’ll also want one that’s easy to install and use. Some scanners do a better job of getting you online and connecting your devices. Others require extra work to get online and add additional computers. Make sure you know what you’re getting into when you pull your new scanner out of the box.

The Scanner Buying Guide

  • Your first experience with your new scanner will be during setup. The Fujitsu ScanSnap iX500, Epson Perfection V550 Scanner and Raven Touchscreen Duplex Feeder Scanner provide easy installation processes, walking you through the steps to connect them to your Wi-Fi network.
  • Once you’re online, you’ll also need to be able to connect to the devices in your home or office. The Fujitsu ScanSnap iX500 is compatible with Windows, Mac, Android and iOS, covering the most popular devices. The Brother Compact Mobile Document Scanner, on the other hand, is compatible with Windows, Mac and Linux and TWAIN/WIA for PC/ICA for Mac/SANE drivers.
  • You don’t have to save your documents to a device in order to scan, though. Some scanners will let you send items directly to the cloud. With the Raven Touchscreen Duplex Feeder Scanner, you can scan documents using “Send to Cloud” if you have Evernote, OneDrive Google Drive, Quickbooks Online or Dropbox installed. The Doxie Go SE Portable Battery Scanner also lets you easily scan documents to your favorite apps.
  • One issue with the Fujitsu ScanSnap iX500 is that you can only connect wirelessly to one device at a time.
  • If you need to edit your documents after scanning them, you’ll probably want good software for that purpose. The Brother Compact Mobile Document Scanner comes with basic editing software that lets you make basic tweaks.
  • If photos are your priority, stick with a model that has a scanning resolution of 4800 by 4800. You’ll get high-quality images from that. However, if you need to scan film or access 3D-scanning capabilities, you’ll need to choose from scanners that offer that functionality.
  • The Fujitsu ScanSnap iX500 is designed for scanning paper documents, such as letters and memos. It’s not as good for tackling a wide range of document types with ease.
  • Chances are you don’t have hours to waste on setting up and troubleshooting your scanner. The Fujitsu ScanSnap iX500 is easy to use with a minimal learning curve.
  • Nothing comes in as handy as a document feeder when you’re dealing with a stack of paperwork. The Fujitsu ScanSnap iX500 and Raven Touchscreen Duplex Feeder Scanner have document feeders that can hold up to 50 sheets of paper at a time.
  • You’ve probably experienced scanners that take a while to process each document. If you’re scanning multiple pages through a feeder, this can be especially important. The Fujitsu ScanSnap iX500 is rated at 25 pages per minute, which is faster than many competitors. You may also want to look for a scanner that features ReadyScan LED technology that cuts out that warm-up time that slows down your work.
  • The good news is, scanners are more affordable than ever. You can get a great scanner at a reasonable price.
  • It’s also important to consider size when you’re choosing a scanner. The Fujitsu ScanSnap iX1500 Document Scanner measures 11.50 by 6 by 6.30 inches, which means you’ll need to clear away significant space for it. The Doxie Go SE Portable Battery Scanner is only 12.25 by 2.25 by 1.75 inches, while the Brother Compact Mobile Document Scanner is 11.90 by 2.20 by 1.40 inches.
  • If you use document management software, the Brother Compact Mobile Document Scanner supports TWAIN drivers that link up with most popular document management platforms.