Recently, vertical text converters have become very popular online, and as a result, the website has been quite slow. I just managed to get in for the first time. Fortunately, the code for this tool is simple, so it was quickly copied and spread across the entire internet; you can find replicas by simply searching for them.
Given that there are so many online versions available, are there any offline options? Here, I would like to recommend a software version that is not only compact but also more powerful in terms of functionality.