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Pipeline

List Lab

100% Free

One paste, full pipeline — expand CSV, normalize, dedupe, sort, format, and split. Toggle each step; copy the result.

Real-time
Client-Side
6 steps

Pipeline

Toggle steps — they run top to bottom in real time.

Expand delimiter → linesNormalizeRemove duplicatesSortFormatSplit
Output (0 lines)
Pipeline output appears here…

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  • No backend required
  • Always up-to-date 
<iframe
  src="https://tools.town/embed/list-lab/"
  width="100%"
  height="600"
  style="border:none; border-radius:12px;"
  loading="lazy"
  title="List Lab">
</iframe>

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How to Use

  1. 1 Paste a messy list or CSV into the input
  2. 2 Toggle pipeline steps (expand, normalize, dedupe, sort, format, split)
  3. 3 Watch the step chips update as lines shrink or reorder
  4. 4 Copy all output — or copy each split group

Features

  • Composable pipeline over existing List Ops engines
  • Expand delimiter → lines as step 1
  • Normalize, dedupe, sort, format, split — each optional
  • Live step trace chips with line counts
  • Per-group copy when split is on
  • 100% client-side

Why it Matters

Most list jobs are not one tool — they are a sequence. List Lab is the 60-second cleanup path so you do not bounce between five pages.

★★★★★

Use Cases

Import cleanup

CSV → unique → A→Z before a mailer or sheet import

Batch after clean

Dedupe and sort, then split into chunks of N

Doc-ready steps

Clean a brainstorm, then format as a numbered list

Frequently Asked Questions

Is List Lab a replacement for the single tools?
No — single tools stay best for one-intent SEO landings. List Lab is for multi-step cleanup in one paste.
Does data leave my browser?
No. The pipeline runs client-side using the same engines as the other List Ops tools.
What is Pro?
Proposed later: saved presets and shareable pipeline links. The free pipeline already includes every step.
📖

Want to go deeper?

Browse all guides →
How to Use List Lab
list lab

How to Use List Lab — Full List Cleanup Pipeline

Run Normalize → Dedupe → Sort → Format → Split in one paste with Tools.Town List Lab.

14 Aug 2026

5 min read

List Ops
list

List Ops — Sort, Dedupe, Split & Clean Lists Online

The Tools.Town List Ops cluster: sort ascending/descending, remove duplicates, split into chunks, compare two lists, and format bullets — free, in-browser.

14 Aug 2026

5 min read

Sort Then Remove Duplicates
workflow

Sort Then Remove Duplicates — List Cleanup Workflow

A reliable two-step workflow: sort your list, then remove duplicate lines — or dedupe first when first-occurrence order matters.

14 Aug 2026

5 min read

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Remove Duplicates from List

Remove duplicate lines from any list. Keeps the first occurrence and original order. Case and trim toggles.

Text Sorter

Sort lines five ways — alphabetical, natural (item2 < item10), length, numeric, random shuffle. Reverse, case toggles, blank-line handling.

Find Duplicate Lines

Find which lines repeat and how often — with counts. Optionally copy a unique list (first occurrence wins).

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