Rename takes a whole folder or any files you drop in, searches and replaces across every name at once, applies a shared name with automatic numbering, and renames everything safely — retrying files that are momentarily busy and never overwriting one file with another.
Drop in a folder or a handful of files, set up the rule once, and let Rename apply it to all of them in one pass.
Type what to find and what to put instead, and it's applied to the whole list in one click — no retyping a single filename. Nothing is renamed on disk until you confirm, so you can keep adjusting until every name looks right.
Give the whole batch a shared name and switch on numbering — prefix or suffix, 1 to 3 digits — and every file gets its own number following the order of the list.
Open an entire folder to list everything in it, or drag in — or manually select — individual files from anywhere. Both add to the same working list without duplicating anything already there.
If a file is briefly busy, Rename retries it on its own instead of just failing. If the new name would collide with one that already exists, it adds a number instead of overwriting anything. And if a file is open in another program, Rename tells you exactly which one (by name) — and, if you ask it to, closes that program so the rename goes through. It will never touch a program the system itself depends on.
Nudge any file up or down the list with one click. Since automatic numbering always follows the list's current order, reordering first is how you control exactly which file gets which number.
Switch the case of every name in the list with a single click — no retyping. Combine it with find & replace or bulk naming in any order before you apply anything.
Dial in a find & replace pair plus a bulk name and numbering style that works for a kind of file you rename often, and save it as a named template — the same idea as WaterClean's recipes. Next time, apply it instantly instead of typing it all again.
Only renames that were actually applied enter the undo history — up to the last 50. Undoing renames the file back to what it was called before, for real, the same safe way as any other rename.
Rename isn't a separate purchase — it's one of the tabs inside Download SIU, alongside the downloader, Convert and Subtitle + AI. Start the 5-day trial right inside the app, or pick a plan.
Windows 10 & 11 · renames everything on your own PC · your files never leave your PC
