RegexExtract - ComfyUI Built-in Node Documentation

The RegexExtract node searches for patterns in text using regular expressions. It can find the first match, all matches, specific groups from matches, or all groups across multiple matches. The node supports various regex flags for case sensitivity, multiline matching, and dotall behavior.

Inputs

Parameter	Description	Data Type	Required	Range
`string`	The input text to search for patterns	STRING	Yes	-
`regex_pattern`	The regular expression pattern to search for	STRING	Yes	-
`mode`	The extraction mode determines what parts of matches are returned (default: “First Match”)	COMBO	Yes	”First Match" "All Matches" "First Group" "All Groups”
`case_insensitive`	Whether to ignore case when matching (default: True)	BOOLEAN	No	-
`multiline`	Whether to treat the string as multiple lines (default: False)	BOOLEAN	No	-
`dotall`	Whether the dot (.) matches newlines (default: False)	BOOLEAN	No	-
`group_index`	The capture group index to extract when using group modes (default: 1)	INT	No	0-100

Note: When using “First Group” or “All Groups” modes, the group_index parameter specifies which capture group to extract. Group 0 represents the entire match, while groups 1+ represent the numbered capture groups in your regex pattern.

Outputs

Output Name	Description	Data Type
`output`	The extracted text based on the selected mode and parameters	STRING

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Inputs

Outputs