The Sync-safe File Names plugin automatically ensures that your note filenames remain compatible across devices by removing unsupported or special characters. It replaces unsafe symbols like question marks or slashes with hyphens, preventing sync failures that often occur on mobile or cloud storage. The plugin monitors new and renamed files in real time, renaming them instantly without overwriting existing content. You can also run a report to detect unsafe filenames and batch-fix them using built-in commands.