Paste Your Text
Copy your list from any source — spreadsheet, text file, email software, or notepad — and paste it into the input box.
Clean your text lists by removing identical lines instantly. Paste your email list, keywords, URLs, or any data and get a unique deduplicated output — all inside your browser.
Paste any text or list — get back only unique lines
Cleaning your list of duplicate lines takes just seconds with ShoXTools.
Copy your list from any source — spreadsheet, text file, email software, or notepad — and paste it into the input box.
Select case sensitivity, sort output, trim whitespace, and remove empty lines. Configure the tool to fit your exact needs.
Click "Remove Duplicates" and see your cleaned list instantly. The stats row shows exactly how many lines were removed.
Copy the cleaned list to your clipboard or download it as a .txt file. Use it immediately in any application.
Duplicate lines in lists cause real problems — sending emails twice, counting data incorrectly, importing records multiple times, or bloating keyword lists with repeated entries. Cleaning duplicates is a fundamental data hygiene task in almost every workflow involving text data.
ShoXTools Duplicate Line Remover processes your text entirely in your browser using JavaScript's built-in Set object, which guarantees uniqueness with no risk of data being sent anywhere. Processing happens in milliseconds even for very large lists.
Professional text deduplication in your browser — completely free with no limitations.
All processing happens locally in your browser using JavaScript. Your text is never sent to any server or stored anywhere.
Deduplication runs in milliseconds using JavaScript's native Set object. Even lists with thousands of lines process instantly.
Optionally treat "Apple", "apple", and "APPLE" as duplicates. Perfect for cleaning case-mixed data from different sources.
Enable Sort A–Z to alphabetically order the unique lines after deduplication for cleaner, more organized output.
After processing, see exactly how many total lines, unique lines, and removed duplicates there were in your input.
Save the cleaned output as a .txt file directly to your device with one click. No extra steps required.
Fully responsive and works on desktop, laptop, tablet, iPhone, and Android with any modern browser.
Start cleaning your text immediately. No email, no account, no personal information required at any point.
Process as many lines as you need. No daily caps, no usage limits, no paid plan required. Always free.
Duplicate data is a universal problem — this tool solves it across many professional workflows.
Email Marketers
Clean subscriber lists to avoid sending emails twice to the same person
SEO Specialists
Deduplicate keyword lists and remove repeated entries before uploading to ad platforms
Developers
Clean log files, configuration lists, and text data before processing in code
Data Analysts
Remove duplicate entries from exported CSVs and text data exports before analysis
E-Commerce
Deduplicate product SKUs and customer IDs from inventory and order exports
Writers & Editors
Remove repeated phrases or entries from reference lists, bibliographies, and notes
Everything you need to know about text deduplication and list cleaning.
ShoXTools uses JavaScript's native Set object to identify unique lines. A Set automatically stores only one copy of each unique value. When you pass your list to a Set, all duplicates are automatically discarded.
This approach is extremely fast — even 100,000 lines processes in under a second — and is mathematically guaranteed to produce exactly one copy of each unique line.
By default, comparison is case-sensitive. This means "Apple", "apple", and "APPLE" are treated as three distinct lines — none are removed as duplicates of each other.
Everything you need to know about the duplicate line remover.