Is there any tool that makes working with JSONs easier? Because I have this situation where clients always want a CMS for large landing pages, but then they still ask us to make changes. And we developers don't really like visual CMSs for content editing that exist. Has anyone seen something like that which would be developer-friendly and at the same time be a CMS working with JSON files?
Yes, there are tools available that can make working with JSON files easier and provide a developer-friendly approach to managing content, there are options like
Contentful, Strapi, Prismic and Sanity.