Dynamic serving of AVIF format images as WEBP to GoogleBot-Image, Edge, IE, Old versions of Mozila and Chrome and 2. Multilanguage site with subdomain in front of the main domain with language code. .

I am looking for a skilled and experienced freelancer to help me with some specific tasks related to developing a multilanguage website with subdomains that are in front of the main domain with language codes (for example : [login to view URL] ; [login to view URL] ... etc.) , and dynamic serving of AVIF format images as WEBP to Googlebot-Image, Edge, IE, older versions of Mozilla and Chrome. How much will cost me someone to make for me a dynamic serving of the images formats in my websites. The main idea is as i am using AVIF files for images as future file format but it is supportted only in the newest Mozilla and Chrome, and not supported in Googlebot-Image, Edge, Intertnet Explorer and old Mozila and Chrome. I want to serve the avif files as webp (compressed) to GoogleBot-Image, Edge, Old Mozila and Chromes. Actually someone from the specialists from SiteGround must do the following: "Does Google index WebP and AVIF images? Although Google does not index AVIF images, it does not mean not to use AVIF image format on the websites. By using <picture> tag, it is possible to use formats like WebP, JPG or PNG which are indexable by Google, as the fallback images, so the browsers will load the first image they can support. Using AVIF image format makes image file sizes smaller which results in loading fast and it significantly and directly impacts on loading speed parameters such as LCP (Largest Contentful Paint). Using picture tag to load modern image formats based on browser image format support Using picture tag to load modern image formats based on browser image format support Solutions for converting image formats based on website CMS Based on the Google Lighthouse reports about the necessity of serving modern image formats in websites for a better loading speed, less file size and better quality, it is of the high priority to choose the best solution for serving images based on your website CMS. If you consider converting images directly on your website, manually or automatically, here are some suggestions which you can use to have images in modern formats and pass audit’s errors." From that article: [login to view URL] The website platform I am using is WordPress, and I will need assistance with the entire process, including coding, debugging, troubleshooting, implementing features, etc. The timeline for this project is 1-2 weeks. I am looking for somebody reliable with great attention to detail who can work quickly and effectively.