Drag-n-drop capabilities would be an additional plus.

There's a typo in the "Advanced Optimization" tab label.

I downloaded the program to my Dell Windows 7 Pro computer, and everything appeared to go well. I checked to see that the program was installed. It was.

When I attempted to open the program to enter the serial number given in the Read Me file, the Windows User Account Control window popped up. It asked the question: Do you want to allow the following program from an unknown publisher to make changes to the computer?

I clicked the yes button, and a spinning circle began to spin. Nothing happened. The program did not open. This is strange because I have downloaded, installed, and opened many other programs without a problem. Does anyone have an idea of how I can open this program?

Work well, Easy to install and find key.

Found this on SoftPedia

Practically no change of getting something wrong while using this app

In the first mode, the app's main window is basically split into two equal parts, one that allows you to preview the picture and its size before the optimization while the other will display the result. That said, simply upload the picture, fiddle about with various settings with the help of the aforementioned sliders, and click save the results, using the dedicated buttons.

A noteworthy feature is the fact that the app provides you with a clear explanation regarding the actual changes that will be done to your pictures depending on your optimization level. As we're sure you'll notice, most of the optimization methods rely on a form of color quantization which means that the app reduces the number of colors from the original image while maintaining the overall aspect intact.

https://www.softpedia.com/get/Multimedia/Graphic/Digital-Photo-Tools/Black-Bird-Image-Optimizer.shtml

Can it keep transparency in png images?

There could be a mention that it is a web based application

Just tried it with some jpegs & it works perfectly using the default settings!
Even held the colouring on a Renoir!

Only works on jpg & png files & if you use lots of corrections it reduces even less?
Could be handy for web use? Even though it's Pro version you don't have 'unlimited' options?

Downloaded, installed and started program. Do not see "Activation" button

So if I read the home page info correctly this reduces the file size not the image size. Not sure I trust it being able to maintain the same amount of information in less data.

Description says "pro" but gives option to upgrade to pro without ability to do so.

Is this really pro version or not?

nice program.
works good.

ask:
how to activate the key?

Does an amazing job reducing the size.