RSS Feed

Please wait while my feed loads

See more posts...


Subscribe to either one of our two newsletters for regular updates and information

Downloads newsletter

This is a weekly newsletter with download news, updates and other information

This is a monthly newsletter with software store information, offers and deals

NonCompressibleFiles 2.47

Create test files which can't be compressed

by Mike Williams

Our Rating:
Your Rating:
Login to rate
Based on 0 ratings
License: Freeware
Operating Systems: Windows 10, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8, Windows Server, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Languages: English
Software Cost: Free
Date Updated: 13 September 2015
Watchlist: Add download to my watchlist
Downloads To Date: 226
Developer: SoftwareOK
RSS News Feed:
Back in stock! Buy Malwarebytes Anti-Malware Premium v2 with a 1-PC LIFETIME license, only $27.95, from
Create test files which can't be compressed

NonCompressibleFiles is a benchmarking aid which creates test files that either can't be compressed (feed them into an archiving program and they won't be reduced in size), or have the maximum possible compression level.

This is particularly useful when you want to measure data transfer speeds. You could just select a random group of files from your own hard drive, but if the data stream is compressed then that won't give you an accurate figure. Transferring 10MB of JPEGs will probably take much longer than transferring 10MB of TXT files, for instance, simply because they can't be compressed to the same degree.

Launch NonCompressibleFiles, though, and you're able to produce as many "non compressible files" as you like. Just enter values in the "Number of files" and "Size of files" boxes, click Start, and wait as they're created.

The end result is a set of files which really can't be compressed. In fact, when we put ours through 7Zip they were 1.29% larger than the originals. And so, if you use them in a data storage or transfer test, you can be very sure that compression isn't going to have any significant effect on the results.

As a bonus, NonCompressibleFiles is able to produce files with the maximum possible compression. It works, too; 7Zip reduced our 1GB of test files to a mere 152KB. There probably aren't as many testing applications for these, but the option is available if you need it.


It's not a program you'll use every day, but if you regularly benchmark hardware or software then NonCompressibleFiles could be occasionally helpful.

Your Comments & Opinion
Related Download Articles
SiSoftware Sandra Lite 2015

SiSoftware Sandra Lite 2015 SP3 v21.47

Free, for personal-use only

Test, troubleshoot, benchmark, or just learn more about your PC's hardware



Free, for personal-use only

Inspect and benchmark your PC's hardware with this all-in-one system information tool

Other Download Articles From This Category

PinMe! 0.84


Easily set any window to stay on top of others

Directory List & Print

Directory List & Print 3.02


Get nicely formatted reports on a folder's contents


OSForensics 3.2.1003

Free, for personal-use only

Find out exactly how a computer is being used with this powerful forensics tool

Desktop APM

Desktop APM 1.15

Free, for personal-use only

Track your PC activity levels

From Softwarecrew

Please wait while my feed loads

See more posts...


Spotlight: Free Full Software

WhatsApp Messenger 2.12.7

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

Version 2.12.7 brings:

• Starred Messages