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Swap one piece of text for another. Optionally match case, and replace either the first occurrence or all of them.

Find

The text to be replaced.

Replace with

What it becomes. Leave empty to simply delete it.

Match case

When on, ABC and abc are treated as different.

Replace all matches

When off, only the first occurrence in each filename is replaced.

By default only the filename body is changed; the extension is left alone.

Insert fixed text at the start or end of the filename, with a separator of your choosing.

Position

Insert at the start or at the end.

Text

What to insert.

Separator

What sits between the inserted text and the original name, such as a space, - or _. Leave empty for no gap.

Appending puts the text before the extension, so you never end up with .mp4suffix.

Number files sequentially in list order. Set the starting value, zero padding, and whether the number goes first or last.

Start at

The first number.

Digits

Zero-pad to this width. 3 gives 001, 002.

Position

Number goes first or last.

Separator

What sits between the number and the original name.

Numbering follows the order in the preview list. If you need a different sequence, reorder with search or filters first.

Replace characters the file system rejects with underscores. You can also list extra characters to delete outright.

Remove illegal characters

Characters the file system rejects (\ / : * ? " < > |) become underscores _. Note that this replaces rather than deletes, so the length is unchanged.

Custom characters to remove

An extra set of characters, and these are deleted outright, leaving no underscore behind.

Runs of spaces are collapsed to one, and leading/trailing spaces are trimmed.

Match and replace with a regular expression. Supports capture groups, custom flags, and an option to include the extension. Invalid patterns are flagged as you type, so a broken rule never reaches execution.

Pattern

The regular expression, without surrounding slashes.

Replace with

Supports capture group references like $1 and $2.

Match case / Replace all

These map to the i and g flags.

Extra flags

Put m, s, u here when you need them.

Include extension

When on, .mp4 takes part in the match too, which is useful for changing extensions.

An invalid pattern is flagged in red as you type, so a broken rule never reaches execution. When in doubt, read the preview.

Find the episode number buried in a messy filename and rebuild it as a clean show + season/episode name. Set the season, an episode offset and zero padding, and add anchor words when the number is ambiguous.

Show name / prefix

The show name in the output filename.

Season

Defaults to 1, zero-padded to two digits on output (S01).

Episode offset

Added to the detected episode number. Use a negative value when season two is numbered from 13 and you want it back to 1.

Zero padding

How many digits the episode number is padded to. Default 3.

Output template

Defaults to {prefix} S{season}E{episode}{ext}; the four variables can be arranged freely.

Anchor before / after

When the number is ambiguous, tell it which words sit immediately before and after the episode number.

The target format depends on your scraper, but the mainstream ones follow the same convention: Show Name - SxxExx. For the full naming spec see the Kodi Wiki article on TV show naming, a community-maintained technical document; Emby, Jellyfin and Plex broadly match its detection logic.