Join List Items

Analyze and summarize any list with the List Tools Tool. Instantly count total items, detect duplicates and unique entries, and generate a frequency table showing how many times each item appears. Customize the output with toggleable options and export or copy results for use elsewhere. Includes file import, live preview, and a clean layout for fast analysis of any plain text list.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Options
Show unique items
Show duplicates
Show frequency table
Maximize output

How to Use:

  1. Paste or import your list into the Input List box.
  2. Choose which insights to show:
    • Show unique items: lists only items that appear once.
    • Show duplicates: lists only items that appear more than once.
    • Show frequency table: displays how many times each item appears.
  3. The tool analyzes your list instantly.
  4. View the results in the right-hand output panel.
  5. Use Copy Output or Export to File to save the analysis.

What List Tools Tool Can Do:

  • Count total, unique, and duplicate list items.
  • Display unique items (those that appear only once).
  • Display duplicate items (those that appear more than once).
  • Generate a frequency table to show how often each item occurs.
  • Works with any plain text list, including imported files.
  • Live updates, copy/export buttons, and smart toggles.

Example:

Input:

Apple
Banana
Cherry
Apple
Banana
Date
Elderberry

With all options enabled, the output shows:

Total items: 7
Unique items: 3
Duplicate items: 2

--- Unique Items ---
Cherry
Date
Elderberry

--- Duplicates ---
Apple
Banana

--- Frequency Table ---
Apple: 2
Banana: 2
Cherry: 1
Date: 1
Elderberry: 1

Common Use Cases:

Use this tool to explore list data, detect duplicates in entries, verify uniqueness in datasets, or prepare content for further processing. Ideal for writers, editors, developers, and anyone handling structured plain-text content.

Useful Tools & Suggestions:

If you’re joining list items into one string, Change List Item Separator gives you full control over how they connect commas, pipes, slashes, whatever fits your format. And if some entries still look rough after the join, Trim List Items can clean up trailing spaces before everything gets bundled together. It’s a handy setup when you’re prepping for export, creating readable lines, or formatting data for code and forms.

Related Tools