Try QuizHub Editor

Following are some sample markdown files and their output quizzes.

Sample File	Output Quiz
basics.md	Basic Quiz
maths.md	Maths Quiz
python.md	Python Quiz
hindi.md	Hindi
sample.md	Sample Quiz

You can also load a quiz using the URL of your existing markdown file. For example: Try copy-pasting this link
Native github and gist urls are supported. The github repository must be public. But the gist can be hidden.