Hash

Hash is a tiny and portable software application that can quickly determine the checksum of a file. This type of tool is commonly used to verify a file's integrity and find out whether two files are identical or not, for example when downloading items from the Internet. It offers support for MD5, SHA1 and CRC32.

Since installation is not a prerequisite, you can save the executable item to any part of the hard disk and just click it to launch Hash. Another option is to save it to a removable storage unit (like a pen drive), in order to run it on any PC directly and without any other installers. Worth mentioning is that, unlike most installers, it does not alter Windows registry settings or create extra files on the disk without your permission.

The GUI is user-friendly, represented by a simple window with a classical look, where you can indicate files to process via the file browser or drag-and-drop method. Batch processing is possible, which means that you can drop multiple files at once.

Results show the full path, size, date and time of modification, along with MD5, SHA1 and CRC32 signature for each file. Any of these fields can be deselected prior to the calculation, while details can be copied to the Clipboard or saved to file for closer examination and safekeeping.

The program has minimal impact on computer performance, since it runs on low CPU and RAM. It is very responsive to commands and calculates hashes rapidly, without causing Windows to freeze, crash or pop up error messages. Thanks to its intuitive layout and options, Hash can be used by anyone with ease.