When comparing JSFiddle vs StackBlitz, the Slant community recommends JSFiddle for most people. In the question“What are the best cloud IDEs?” JSFiddle is ranked 6th while StackBlitz is ranked 11th. The most important reason people chose JSFiddle is:
Ranked in these QuestionsQuestion Ranking
Pro CoffeeScript and SCSS support
Pro Allows collaborating on code
JSFiddle makes it easy to save the code snippets and send the link to others who can view and edit the code.
Pro Supports a wide variety of frameworks and extensions
JSFiddle can switch to selection of frameworks and extensions including jQuery, AngularJS, ReactiveJS, D3 simply from a dropdown.
Pro TypeScript autocompletion
Which is a feature not available in Plunker.
It feels much faster than Plunker for Angular 4 code.
Con Not actually an IDE
JSFiddle is not actually an IDE and is only suitable for small blocks of code.
Con Non free/libre (proprietary)
Con Nice UI
Looks great and makes it more enjoyable to work with.