I use this app to rename PDF files downloaded from academic websites. The files often have numerical names. I cut and paste the article's name for a new title but often that comes with punctuations; mixed case letters, and multiple spaces between words. It's time consuming to make corrections for a proper title. With this app I get rid of punctuation, remove multiple spaces and get all letters into the same case by simple finger moved. THIS APP SAVES ENORMOUS amounts of time for me and removes the frustration of having to manipulate the keyboard cursor to locations within a title.
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njnotekeeper