nix/config/zen/handlers.json

{"defaultHandlersVersion":{},"mimeTypes":{"application/pdf":{"action":3,"extensions":["pdf"]},"image/webp":{"action":3,"extensions":["webp"]},"image/avif":{"action":3,"extensions":["avif"]},"image/jxl":{"action":3,"extensions":["jxl"]}},"schemes":{"mailto":{"stubEntry":true,"handlers":[null,{"name":"Gmail","uriTemplate":"https://mail.google.com/mail/?extsrc=mailto&url=%s"}]},"io.element.desktop":{"action":4},"element":{"action":4}},"isDownloadsImprovementsAlreadyMigrated":false}