Free Bulk Filename Renamer & Formatter – Fast, client-side file renaming with smart rules

Summary: This tool renames hundreds of files instantly using advanced rules like prefixes, suffixes, text replacement, auto-numbering, and case changes. It processes files entirely in the browser, ensuring privacy with no uploads, and supports ZIP export.

What it does

It applies bulk renaming with smart rules, drag-and-drop sorting, metadata support, duplicate detection, and exports renamed files as ZIP archives. All processing occurs client-side without uploading files.

Who it's for

Users needing to rename large batches of files such as photos, documents, code assets, or audio without installing software or risking privacy.

Why it matters

It solves limitations of paid, server-based, or outdated tools by providing a private, fast, and modern browser-based renaming solution.