STEP 01Add files
Choose files from your device; their contents are not uploaded.
Free forever · Files stay local
Online Batch File Renamer
Drop in a folder's worth of files, combine prefix, suffix, text replacement and numbering rules, then review every old-to-new name before download.
Start using this tool
File contents stay local Review first, then run
STEP 02Choose settings
Combine rules and adjust file order at any time.
STEP 03Review & download
Review every name, resolve conflicts and package the copies.
Local processing · No file uploadsCore renaming is free forever
Drop files to rename
or choose multiple files from your device
The website cannot view your file contentsPractical use cases
Less mechanical sorting, more focus
Client delivery
Standardize attachments with project names, versions and delivery order.
Event photos
Keep extensions while adding a date, prefix and zero-padded sequence.
File archives
Replace an old project name across a batch without touching file contents.
FAQ
Questions before you begin
Will this overwrite my original files?
No. FileNest downloads renamed copies inside a ZIP. Your originals remain unchanged.
Are files uploaded to a server?
No. Name previews and ZIP packaging happen inside your current browser.
Will file extensions be lost?
Extensions stay on by default, and the preview shows the exact final result before download.