Like the basic version, the interface of Contenta Converter Premium is very simple. The toolbar across the top gives you access to the program’s main features, all of which are available in the Premium version. These include advanced features such as read/write of JPEG 2000 files, reading of RAW formats, PSD formats etc.

You can convert photos between formats (both popular and less common ones), reduce the size of images and automatically rename them and sort them into subfolders according to their metadata. Contenta Converter also lets you preview images and check the amount of space you save when optimizing their size.

In the Premium version, there are additional features such as the ability to flip and crop images, converting multiple PDFs to images and adding special effects.

However, the main problem with Contenta Converter Premium is the same as the Basic i.e. if your metadata for images is very generic or inaccurate, it doesn't work very well as it uses this information to identify files.

Overall though, Contenta Converter Premium is a very powerful tool for sorting, renaming, converting and manipulating images that have the correct metadata attached.

Download Contenta Converter Premium 5.8 in Softonic

If you're a general user, this probably won't bother you much, but if you're a professional photographer, or if you use images for commercial use, then it's a real concern. Adding a watermark is a simple way to protect your images from illegal or unauthorized use. iWatermark is a very powerful and effective way to do it too - it has just about every conceivable control over how you wish to add your watermarks.

To get started, simply drag and drop an image into the 'Input' panel. Then click on the output panel to select where you'd like to save the new file. It would have been nicer if a preview of your image appeared in the input panel but instead it's replaced by a generic icon. However, after this you have maximum control over how your image is handled and processed including the editing of EXIF and metadata. Note that iWatermark leaves the original files untouched but creates new images complete with the watermark of your choice.

In this trial version, you're limited to eight different example watermarks but the important thing is processing takes a matter of seconds. You can rotate, resize and reposition watermarks to your heart's content making it a truly customizable and powerful watermarking application.

Overall there's little to fault with iWatermark. From Meta-data preservation to embedding IPTC information, iWatermark covers every possible watermarking need for the amateur photographer.

Download iWatermark 3.12 in Softonic