Md5Checker is a free, faster, lightweight and easy to use tool to manage, calculate and verify MD5 checksum of multiple files/folders.

Why should I use Md5Checker?

1.To verify the integrity of downloaded files: With Md5Checker, user can calculate MD5 checksum of downloaded files and compare them with provided when downloading via HTTP, FTP, P2P, etc.
2.To detect unknown viruses: Only-for-existing-viruses DB based anti-virus programs can rarely detect all emerged new (i.e. not in the DB) viruses in time. As a supplement, Md5Checker checks whether files are original. By that user can detect any change of file including virus infection.
3.To make sure that the installation files are secure: System will be re-infected by viruses time and again while reinstalling program if the installation file had been infected. To avoid this, Md5Checker user can calculate and save the MD5 checksum right after downloaded/copied installation files, i.e. make sure these files are original (This step can be skipped if there are MD5 checksum downloaded/copied along with these files), and verify these files again upon using them.
4.To make sure that files in a removable storage device are secure: In order to avoid bringing in viruses from using the removable storage device, Md5Checker user can calculate, save MD5 checksum in advance and verify files afterwards in the device. It is also a good idea to copy Md5Checker into the device to be able to check files anywhere and anytime. Note: Don't forget to check the copied Md5Checker.
5.To check out the security status of the system: It will indicate that the system was infected if the MD5 checksum of one executable file was changed without any action.
6.To find out the virus source: It will indicate that one executable file is the virus source if the MD5 checksum of other several executable files have changed unexpectedly after executed this file.
7.To calculate MD5 checksum for publishing: File distributors and program authors can use Md5Checker to calculate MD5 checksum of their files and publish them on the website.

Features
1. Faster calculating and verifying
Uses an optimized algorithm. Faster than most MD5 programs.

2. Multiple files handling
Can display, process and manage multiple files in a categorized, sortable list view.

3. Small and installation-free
It is less than 300 KB and does not require any installation.

4. Convenient to add files and folders
Can add files and folders via Open File dialog, drag and drop or command line.

5. Enhanced Open File dialog
Can add folders and set corresponding options using this dialog.

6. Options for adding folders
Can set to include which types of files, exclude which types of files, and whether recurse sub-folders or not.

7. Multi-threading
Can do any operations while adding and checking. For example, adding files, removing md5 items [1], sorting, etc.

8. Full management of saved md5 items in MD5 files
Can update, delete saved md5 items in MD5 files handyly.

9. Three ways to save
Can save md5 items per folders silently, per files silently, or use Save File dialog to save them to one MD5 file.

10. Categorized views
Can view all md5 items or view one category of md5 items.

11. Three types of copy commands
Can copy md5 items into the format you need.

12. International support
Supports Unicode. And, when open/save MD5 files, user can choose to use a code page other than the current system setting.

13. System integration
Has options to: Associate with MD5 files; Create Program Groups shortcut; Add to Shell context menu; Add to Send To menu.

14. Integrated Shell commands
Provides two Shell commands: Locate and Properties, to be handy to locate files and view their properties in Explorer.

15. Compare MD5 dialog
Only needed if there is no previously saved MD5 file.
Compare MD5 dialog allows user to compare file's current MD5 checksum with input or another file's rather than manually comparison.

16. MD5 Calculator dialog
Provides an MD5 Calculator dialog to calculate the MD5 hash of specified text.

[1] Md5 item - A definition used in Md5Checker, consists of a file path, some file properties like size, modified date, and current and saved MD5 hashes.

SoftSea.com had fully tested and uploaded the install files, Md5Checker does not contain any adware or spyware, the latest version is 3.3, you can download this software (132.11 KB) from special server of SoftSea.com.

The license of this software is Freeware, you can free download and free use this file compare software.