I will create an animation as gif, video or lottie for a website or social media

Sure. Here are some good examples: https://knowhere.to/ https://clearbit.com/ https://magento.com/ https://www.freshworks.com/live-chat-software/ https://andris.gauracs.com/

No. I'm offering only lottie files - because it's the workflow and skill set that suits my experience best. Also I believe that Lottie allows for more detailed and advanced approach to animation than other available technologies.

Sure. I can export any file format with animation that I did. I just recommend using lottie on the web because of small file sizes and simple control via player code.

Lottie is a quite new solution for animation delivery created by Airbnb. Here is a good place to learn more: https://airbnb.design/lottie/

No. I'm only creating .json file for you. But lottie player implementation is rather simple and straightforward, for more information abut the process please check https://medium.com/spemer/using-airbnb-lottie-with-after-effects-plug-in-bodymovin-c3608c9aa82

Every animation is different - it depends on the number of points and keyframes in animation. From my experience 'landing page illustrations' can take about 500kb. Lottie can also be gzipped to reduce file size. Please see https://betterexplained.com/articles/how-to-optimize-your-site-with-gzi

As great and reliable as lottie is at this point, there are still some limitations - please contact me with your project details before ordering so that I can advise further.

I can work with any vector graphic format. SVG, EPS, AI, PDF - or any similar. Lottie can also contain PNG or JPG files but the pure-vector approach is adviced.