Bulk Image Manager

Bulk Image Manager facilitates batch operations for image files, enabling you to resize, rename and change their format. It doesn't require installation. The supported file types are BMP, JPEG, GIF, PNG and TIFF.

You can drop the downloaded files in a custom location on the disk or a USB flash drive, and double-click the .exe to launch the program on any computer. It doesn't need any DLLs to run, doesn't create extra files on the disk without your permission, and doesn't make any modifications in the Windows registry.

It's packed in a user-friendly interface represented by a standard window split into two frames, where you can begin by specifying the target folder and pictures.

It's possible to resize the photos by defining a new width and height in pixels, or a proportion in percent to take into account when reducing them. After this step, files can be saved with their original format or a different one.

When it comes to file renaming, you can set up complex masks by using names, dates, time and numerical incrementation, as well as by indicating the starting position, number of steps, and zeros. Plus, Bulk Image Manager can be asked to overwrite files with existing names (if any).

It finished jobs swiftly and worked smoothly in our tests, without causing the operating system to hang, crash or prompt error messages. CPU and RAM consumption was minimal during its runtime. On the other hand, the interface looks rudimentary, and the options are not intuitively described for less experienced users.

Nevertheless, Bulk Image Manager provides you with an effective method for resizing, renaming and converting image files, doesn't need setup, and it's free to use.