Andreas Software
Free programs for Windows by Andreas Jönsson


AS-CRC32 1.20 - Check if a file is intact.

AS-CRC32 1.20
Screenshot of AS-CRC32 1.20

This program can check (with some certainty) whether a file has been modified or damaged, provided that you have calculated the CRC32 value of the file before. The program generates a 32-bit value with the algorithm CRC32 by reading the entire file and making calculations on its contents. CRC is an abbreviation of Cyclic Redundancy Check.


  • The program can integrate with Windows which means that you can right-click on a file and choose "AS-CRC32" in the menu. (The integration feature is activated from the File menu. This is a non-portable feature.)
  • Shows very clearly if the comparison matched or not.
  • When you have performed a calculation you can press [CTRL+W] to write a signature file. When you want to check the file you perform a calculation and then pressing [CTRL+R] to read the signature file and the values are compared automatically.
  • Also includes calculation of text. (The text is treated as UTF-8.)

> Download AS-CRC32 1.20 (Zip, 1.09 MB)

Revision Date: See file date.
License: Freeware.
Unicode Support: Yes.
Program Type: Portable, x64.
Operating System(s): Windows 7 (SP1+), 8.1 and 10. (Also Windows Server 2012 R2 and 2016.)
Language(s): English and Swedish.

This is the program's official website - download the program here to get the latest version/revision. The program is free.

Information regarding the integration feature

If you have User Account Control (UAC) activated you have to run AS-CRC32 as Administrator in order to add/update or remove the integration feature. This can be done by right-clicking on the EXE file.

AS-CRC64 1.20

You can also download AS-CRC64 1.20 where the only difference from this program is the calculation routine.

Copyright © 1998-2019, Andreas Jönsson. All rights reserved.

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