Batch renaming files means changing the names of multiple files simultaneously, typically using a pattern or rules to save time compared to manually renaming each file individually. Unlike desktop operating systems (Windows File Explorer, macOS Finder) which often include built-in tools for this task, Dropbox and OneDrive's core web and mobile interfaces do not offer a native "batch rename" function. You can only manually rename files one by one within these platforms directly.

To achieve batch renaming effectively, users must typically leverage their computer's file system first. For example, you would download the files from Dropbox or OneDrive to your PC or Mac, use the operating system's renaming capability (like selecting multiple files in Windows Explorer and pressing F2, or using Finder's "Rename X Items" option on Mac), and then re-upload the renamed files. Alternatively, OneDrive desktop app users might rename files directly within File Explorer, where changes sync back to the cloud automatically, provided all files are already synced locally. Dropbox Desktop behaves similarly.

The main advantage of renaming locally is efficiency for large sets. However, the significant limitation is requiring file downloads/uploads, making it cumbersome especially with limited local storage or slow internet. Cloud providers prioritize core sync functionality over advanced file management tools like batch rename, likely due to complexity and potential for accidental bulk changes. While third-party tools or automation scripts could potentially connect via APIs to batch rename, these involve security risks and complexity beyond the average user.