Features

Open a folder, add rules in order and see each file's new name next to the current one before anything changes. Conflicting or invalid names are flagged; the last rename is undone with one click. Files never leave the device.

Key features

Ordered rules: Find and replace, insert text, remove characters, case, numbering, date, name from tags, spaces and characters, extension. Rules can be switched on and off and reordered.
Live preview: The current and new names appear side by side; unchanged and excluded files are marked. It stays smooth in folders with thousands of files.
Conflict checks: The same name given to two files, names that already exist in the folder, characters invalid on Windows and reserved names (CON, NUL…) are flagged; files with problems are skipped.
Undo: The last rename is undone with one click. Renaming happens in two steps, so swaps such as "a → b, b → a" are applied safely.
Regular expressions: Find and replace can use regular expressions; groups are carried into the new name with $1, $2. An invalid expression shows a warning and is not applied.
Photo and music tags: Capture date and camera from photos (EXIF); artist, title, album, track number and year from music can be written into the name: "03 - Artist - Title.mp3".
Presets and saved rules: Ready-made sets name photos by date, music by tags or files for the web with lower case and hyphens; your own rule sets are saved by name.
Filtering and sorting: Only certain files (e.g. *.pdf) are processed; files can be included or excluded one by one. Numbering follows the sort order by name, date or size; subfolders can be scanned too.
Language-aware case: Lower and upper case follow the rules of the selected language (in Turkish I → ı); accented letters can be simplified if wanted.

Devices and browsers

In Chrome, Edge and the desktop application, files are renamed in place in the folder.
In Safari, Firefox and phone browsers, copies of the selected files with their new names are downloaded as a ZIP.
On a phone, rules and preview open as separate screens with bottom navigation.