RunMacroNewList Comparison
Compare Two Lists Online
Compare two text lists or spreadsheet columns side-by-side to find unique items, duplicates, and differences instantly.
Open ToolRemove Duplicate Lines Online
Instantly deduplicate text lists and spreadsheets. Fast, secure, and runs 100% locally in your browser.
Original Text List10 lines
Clean Unique List0 lines
RunMacro Excel Automation
Cleaning spreadsheets and deduplicating rows on a regular basis?
Automate entire Excel data preparation and deduplication pipelines without writing code.
How to Remove Duplicate Lines Online
1
Paste Your Text List
Paste your raw lines, emails, URLs, or spreadsheet columns into the original text area.
2
Choose Deduplication Options
Toggle Case-sensitive matching, Trim whitespace before deduplicating, or Sort alphabetically.
3
Click Remove Duplicates & Copy
Review the live reduction statistics and copy or download the unique list in one click.
Key Features of Our List Deduplicator
Comprehensive Cleanup Options
Trim accidental leading/trailing spaces, distinguish case, and sort unique lines alphabetically.
Live Reduction Metrics
Instantly view original line count, unique lines remaining, removed duplicates, and percentage reduction.
Dual Side-by-Side View
Keep your original source data visible while reviewing clean unique results in the parallel window.
100% In-Browser Execution
Your sensitive lists and data files are cleaned locally on your machine with zero external leaks.
Frequently Asked Questions
Clear answers about using this tool and automating workflows with RunMacro.
Does this tool support lists copied from Excel?
Yes! Simply copy a column from Excel or Google Sheets and paste it directly. Each spreadsheet cell is treated as a separate line.
What does "Trim whitespace" do?
It removes accidental spaces or tabs at the beginning and end of each line so that "apple " and "apple" are recognized as duplicates.
Can I automate deduplication in Microsoft Excel directly?
Yes! With RunMacro, you can create automated tasks that open Excel workbooks, remove duplicate rows across multiple sheets, and save files without writing code.
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