How to convert .png stripes to one .gif file in photoshop or any other application. Thanks in advance.
There are many ways that you can convert a series of PNG images (or any other still images format) into a GIF file.
In your question, you mention using Photoshop. Using the Adobe suite is also possible; in this case you could drag and drop the images into Premiere Pro and export as a video file, then open the file into Photoshop and save for web as a GIF. Or drag them onto the Photoshop timeline, and export as a GIF.
I would recommend, whatever process you end up choosing, that your images aren't too large, and all have the same height and width.
I hope this answers your question.