List Tools

This tool extracts part of a list using flexible criteria. You can extract by line numbers, match exact values, or use marker phrases that define the start and end. Options…

This tool removes all items that appear only once and keeps only repeated entries. You can choose to display all instances of repeated lines or just one per value. It…

This tool scans your input list and finds items that appear more than once. You can view duplicates with or without frequency counts, control case sensitivity, and apply live filters…

This tool filters a list of lines based on specific criteria. You can match by exact word, substring, prefix, suffix, or regular expression. It supports case sensitivity and lets you…

This tool combines list items into a single value using a chosen reducer. It supports string concatenation, numeric sum and multiplication, and custom join operations. With real-time preview, it’s perfect…

This tool lets you transform each item in a list using common string functions like uppercase, lowercase, capitalization, and character reversal. You can also add custom prefixes or suffixes to…

This tool extracts the tail of a list known as the “cdr” in Lisp-style list processing. You can remove the first item or repeatedly remove leading items to simulate cdr,…

The Edit a List Tool processes your line-based text lists with live preview. It trims, sorts, removes duplicates and empty lines, adds prefixes/suffixes, and even replaces parts of each item…

Duplicate every paragraph in your text multiple times using the Duplicate Paragraphs in Text Tool. Set how many times to repeat each paragraph, then view and export the result. Includes…

Extract the last N lines of text using the Tail Text Tool. Choose how many bottom lines to keep and output a clean, line-by-line list. Supports file import, export, live…