AutoImager

AutoImager is a program that you can use to perform several operations on your image files, including conversion.
The interface of AutoImager is based on a standard window in which you can import pictures via the file browser only, because the "drag and drop" method is not allowed. Batch processing is supported.
So, you can batch-convert pictures to different formats, including BMP, GIF, PNG, PDF and ICO.
But you can also apply various filters, such as crop, resample, brightness, contrast, blur, smooth, grayscale, negative, sepia, stretch and twirl, as well as adjust their settings (e.g. height and width of waves)
In addition, you can preview the original images, remove an item from the list or clear the entire queue, configure global settings (e.g. JPEG output quality, logging, color depth), enable quiet mode, and more.
Once you initiate image processing, you can specify the output destination of the new files. During this time, you can check out the name of the current file that's being processed, as well as a progress bar of the entire task.
AutoImager runs on a massive quantity of system resources when it's busy with a task and takes a reasonable amount of time to convert. No errors have popped up during our tests and AutoImager did not freeze or crash. There's also a well-written help file with snapshots that you can check out.
On the other hand, the interface of AutoImager is clearly outdated and you cannot preview output pictures at a regular size (at least one that's larger than a thumbnail) which can be difficult to work with if you're dealing with images filled with details. Also, there are not enough settings that can be configured when it comes to filters. We recommend AutoImager with reservations.