FileFiller v1.01

Andrew Lee on 12 Feb 2013

FileFiller lets you create dummy files at (almost) any size. The file's contents can be pseudo-random, filled with zeros or with characters, whose ordinal value you can specify.

Runs on: Win95 / Win98 / WinME / WinNT / WinXP / Vista / Win7
Writes settings to: None
Stealth: ? Yes
Unicode support: No
License: Freeware
How to extract: Download Filler.exe to a folder of your choice and launch.
What's new?
Updated FileFiller to version 1.01: the "ASCII ordinal value" option was replaced by "ASCII character".

6 comments on FileFiller  The Portable Freeware Collection Latest Entries Feed

Danny 2010-10-03 18:59

I use this kind of file generators to block unneeded disk space (120 GB at my internet laptop). I leave only 3-4 GB available. this way when I shred the unused disk space once in a while (for making unwanted undeletes of sensible data impossible) the process is much faster.

Doug 2010-09-26 15:08

This works well for creating a pad file to be used with dsmask (part of dsfok). dsfok is available from
These 2 programs allow for truly unbreakable encryption.

dot 2010-09-26 11:41

The first thing that comes to my mind is that one of its main (and malicious) uses will be to upload and distribute fake files (for instance on binary newsgroups, file hosting sites, or via P2P), so users get tricked into downloading huge amounts of useless data while they keep thinking they are downloading some movie or software.

Apart from this malicious use, the program might perhaps be useful for tests, like testing the throughput and speed of a specific amount of data on a connection (e.g of an external hard-drive or a network connection, etc.).

guinness 2010-09-26 00:19

Another use is on a USB drive when you don't want malicious programs to install any files on your USB Drive when using TrueCrypt. You create a container file and then create a file with the space that is left over.

rpvbob 2010-09-25 22:21

Most common use might be to write over sensitive files after they've been deleted by making a big file with random characters that fills up empty space on the disk. Another use is to fill up the first (and fastest) portion of a new disk with a blank file, then fill up the rest with archive or read-only data that you want available on the disk. Then delete the blank file and you have the fastest portion of the disk available for your daily working set of data. There's an assumption that your OS is smart enough to use empty space at the start of the disk first when writing files.

darkest 2010-09-25 20:01

Where do you use this for?

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