I'm a Flash developer and know how convert it to HTML5 format that works exactly same. you can change your contents to HtML5. please check my previous works from the following addresses:
I am very interested in this job, I am professional in Adobe Animate cc 2020 html5 js
I can provide it to run on any platform ,browser , you will be completely satisfied.
I will animate it as a professional
You will have to redesign or move all content with animations in adobe animate.
What is your product?
Does it containnAS code?
Is it website, software or animation?
Flash is already not working in browserMais
I would use Adobe Animate CC for converting your app to html5
„Probably, the only proper way to port a Flash game to HTML5 without Unity is by using Adobe Animate CC. Previously Flash Professional CC, Animate is now AMais