n8n-nodes-regex

This is an n8n community node. It lets you use regular expressions (regex) directly in your n8n workflows for advanced text matching and extraction.

Regex is a powerful pattern matching language used for searching, parsing, and manipulating strings. This node brings flexible regex matching with support for flags, named capture groups, and multiple match results.

n8n is a fair-code licensed workflow automation platform.

Installation
Operations
Compatibility
Usage
Resources

Installation

Follow the installation guide in the n8n community nodes documentation.

Operations

This node provides the following operation:

• Regex Match: Apply a regular expression to a text input, supporting capture groups, named groups, and multiple matches via flags.

Compatibility

• Requires n8n v1.0.0 or later.
• Tested on n8n v1.36.0.
• No external credentials or services required.

Usage

Inputs

• Text: The string to evaluate against the regex pattern. Can be set using an expression.
• Regex Pattern: The regular expression to apply (omit surrounding slashes /).
• Flags: Optional modifiers such as:
  • g (global): Find all matches.
  • i (ignore case): Case-insensitive match.
  • m (multiline)
  • s (dot matches newline)
  • u (unicode)
  • y (sticky).

Output

• One output item per match (if g flag is used).
• Each output item includes:
  • match: Full matched string.
  • Named groups (if used): Added as individual fields.
  • Unnamed groups: Added as group1, group2, etc.

Behavior

• If the regex is invalid, the node will throw a clear error with details.
• If there are no matches, the node outputs no items.
• Each incoming item is processed independently.

Example

Pattern: (?<first>\\w+) (?<second>\\w+)
Text: "hello world"

Output:

{
  "match": "hello world",
  "first": "hello",
  "second": "world"
}