How to import bookmarks from Xmarks?
Open Xmarks and select Tools > Export Bookmarks to HTML.
Save the HTML file.
Open our web client at https://everhelper.me/client/ and in Bookmarks select Tools > Import/Export Bookmarks.
Select the HTML file you saved from Xmarks.
Wait for the import to complete.
You can then use EverSync to synchronize the bookmarks with your browser: