How can I safely find and remove duplicate files?

My laptop is constantly showing low storage, and I recently discovered multiple copies of photos, documents, videos, and downloads scattered across different folders. Manually checking everything is taking too much time and makes it difficult to know which files are safe to remove. I’m considering SysTools Duplicate File Finder to scan selected folders, identify duplicate files, preview them, and remove unnecessary copies. Its filtering and scanning options seem useful for organizing storage efficiently without accidentally deleting important original files.