SrtToSub

SrtToSub is a software utility whose purpose is to transform subtitles from one extension to another, with a minimal amount of effort.

Use it on the fly

The installation process can be bypassed, as this product is portable. As a result, it is not going to make any changes to the Windows registry and hard drive without your permission, and no remnants are going to be left behind after its removal.
In addition to that, you should know that by moving the program files to a removable storage device (e.g. thumb drive), you make it possible to take SrtToSub everywhere with you and run it on any machine you come in contact with.

Method of use and options to tweak with

This application enables you to convert SRT files to a SUB format, while the reverse operation is also available. These can be uploaded with ease with the help of a file browser, yet the “drag and drop” feature is not supported and nor is batch processing, which are considered to be small setbacks as it would have helped users to manage items in a more efficient manner.
In addition to that, it is possible to change the frame rate with the help of a drop-down menu and automatically open the resulted subtitle. A progress bar enables you to approximate the remaining time until the process is over and no other notable options are supported.

Conclusion

To sum up, SrtToSub is a pretty decent piece of software when it comes to converting subtitles from one format to another. The interface is suitable to both power and novice users, the response time is good and the amount of resources used is minimal, even during the transformation process.
Nevertheless, it lacks many options other similar tools enclose, such as choosing where to save the resulted item.