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Md5Checker 3.3 is released
Monday, 24 December 2007 15:07

What's new:

  • New: Check new md5 items only option
  • New: Be able to recognize and skip comments in an MD5 file
  • New: Save Options dialog
  • Improve: New wildcards matching algorithm - Adding large folder is about three times faster
  • Improve: Be able to read MD5 files in various formats
  • Fix: Count of checked items in the status bar is incorrect if there are md5 items in the Loaded category
  • Update: Load all MD5 files by default while adding folders
  • More ...

One tip: Hold the Shift key down and then press Start in the main Window, Md5Checker will check new md5 items only.

The version 3.3 has been updated once since last released, the latest version is Please check again whether you downloaded the right version. Sorry for the inconvenience.

You can post comments, suggestions or bug reporting for the version 3.3 here, thanks!

The direct download URLs just changed
Monday, 03 December 2007 23:49

The direct download URLs have been updated to http://getmd5checker.com/downloads/last/*.zip from http://getmd5checker.com/go.php?http://getmd5checker.com/last/*.zip. If you were using/linking to the direct download URLs, please update them.

Sorry for the inconvenience :(

Md5Checker 3.2.3 is released
Tuesday, 27 November 2007 23:29

Thanks HS for bug reporting and great suggestions :)

What's new in version 3.2.3:

  1. New: Check for Updates command.
  2. Fix: Compare MD5 dialog should recognize lower case characters.
  3. Fix: Combo boxes should not be fix width.
  4. Update: Separate Unknown category into Unknown & Loaded.
  5. Update: Add *.zip & *.rar by default.

Regarding to #4, otkin asked how to check only new files (files have never been checked), I use this update to make this process easier:

  1. Add the containing folder into Md5Checker WITHOUT auto starting
  2. Switch to the Loaded category
  3. Remove all listed items <- Now only new files are left.
  4. Start checking

But I'm still thinking about a one-click solution, maybe it will be implemented in the next version.

Md5Checker 3.2.2 is released
Monday, 19 November 2007 21:55

Added Compare MD5 dialog - Can compare one file's MD5 checksum with another automatically:

Compare MD5 with inputed/pasted one:

  1. Select one md5 item with calculated MD5 checksum
  2. Press F2, use the Edit | Compare MD5 menu item, or use the Compare MD5 right-click context menu item to bring up the Compare MD5 dialog
  3. Or you just double click the md5 item
  4. Input/paste MD5 in the lower edit control and watch the result in the top-right edit control

Compare two files' MD5 checksums:

  1. Select two md5 items with calculated MD5 checksums
  2. Press F2, use the Edit | Compare MD5 menu item, or use the Compare MD5 right-click context menu item to bring up the Compare MD5 dialog
  3. Watch the result in the top-right edit control

Other tip:
You can select other md5 items without closing the Compare MD5 dialog.

Tip to compare MD5 checksums manually:
The MD5 algorithm determines that the MD5 checksum will become totally different even if the file has been changed a bit. For instance, it may change from C3FCD3D76192E4007DFB496CCA67E13B to 56785C60518BBA6B4F895CB73628C491, but to D3FCD3D76192E4007DFB496CCA67E13B? Scarcely possible. Therefore, when you compare MD5s manually, comparing the first/last a few characters is fine. If you are still not so sure, use the Compare MD5 dialog.

Md5Checker 3.2.1 ( is released
Saturday, 17 November 2007 02:45

What's new in version 3.2.1:

  • New: 'Save Each' command
  • Improve: 'Store last folder used' option - Thanks Ronald for the suggestion
  • Fix: Three minor UI bugs

Save Each command:
This command is kind of common usage. It will create MD5 file for each checked file using the same file name plus an MD5 extension. For example, create MD5 file ABC.xyz.md5 for file ABC.xyz and store ABC.xyz's MD5 checksum in the MD5 file.

What's do you think about the new version? Any comments and bug reports are greatly appreciated.


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