registry speedup is an easy-to-use tool that allows you to safely clean, repair, backup and compact windows registry with easy. registry speedup cleans and repairs invalid information in the windows registry to keep your pc running cleaner, faster, and error-free. registry speedup allows you to backup your whole windows registry, so you can revert to the last good configuration if you encounter a system failure. registry speedup optimizes the registry by removing fragmentation, deleting unused entries, and compacting the registry to make it access fast.