Pretty format JSON data in Safari with this extension and a simple toggle button. No data is sent back to a server (it's secure) and no CSS or modifications added to the page until the toggle is turned on. Plus, 100% free and open-source. Dark mode is supported automatically. This plugin works with JSON from a server (no local files) and served with the correct MIME type and content-security. File urls will not work with this plugin for security reasons. Visit the support URL for more...thanks!