The application also includes a spellchecker and supports subtitle splitting, subtitle joining, and various text-related and timing operations. It does editing, converting, and synchronizing subtitles, and it supports all the subtitle formats. At least I myself have never happened to come across any application that could come anywhere close to what this one does. Subtitle Workshop is for certain the most powerful and efficient subtitle editor and fixer you will ever download.
Then, if you're not satisfied, you can go on and edit them.
If you find yourself in a situation like this, the best thing you can do is to stop improvising with editing your subtitles in Notepad and install some of the tools built exactly for the purpose of fixing subtitles.