i convert a webm file to mp3 but need the exact final filesize of the mp3 before the conversion.

Hello there, I am a full-stack web developer who is an expert in JavaScript and Node.js. I can implement a solution for you to estimate accurately the final size of the mp3, before converting webm. I can implement this in either front-end using JavaScript or the backend if it uses Node.js. Hoping to hearing from you soon :)

Hi, there I am PHP expert and My name is Mykyta from POLAND. I have just read your requirements in carefully. So, I 'd like to work with your work. My skill is follow: Codeigniter, Laravel, Wordpress, Woocommerce, Shopify, ... React.js, Vue.js, Angular.js... WebDesign, Website build, Front-end development. If you hire me, I will provide perfect work. Thanks

I can help you with this. I have a broad knowledge of basically anything being an engineer. I can do this immediately as you accept me.