Tool which converts json from file into F# records. There's also library Json2Fs.Core. Both can be found on nuget.org.
Get it from nuget:
dotnet tool install json2fs --global --prerelease
Run it like this:
json2fs WebsiteResponse your/path/to.json dst.fs
Where WebsiteResponse is the name of the root record (the one you will be deserializing into).
open Json2Fs.Core
let json = ... // string
let jsonElement = JsonSerializer.Deserialize<JsonElement> json
let dtos = generateFSharpDTOsByJson typename jsonElement // a list of records
let ``F# code`` = fsRecordsToString dtos // this converts it to the actual code