Free Duplicate Remover – Remove Duplicate Lines Online
Clean up lists and text by removing duplicates instantly.
ToolCraftr is a free duplicate line remover that finds and removes duplicate lines from any text. Our duplicate remover tool supports case-sensitive matching, sorting, and preserves original order. Perfect for cleaning lists, logs, and datasets.
Who is this duplicate remover for?
Data Analysts cleaning datasets and removing duplicate entries from lists.
Developers processing log files and removing redundant configuration entries.
Content Managers deduplicating email lists, keyword lists, and URLs.
System Administrators cleaning configuration files and removing duplicate records.
Key Features
Smart Detection
Automatically detects and identifies duplicate lines in your text with precision.
Case Options
Choose case-sensitive or case-insensitive duplicate detection based on your needs.
Keep Original Order
Maintains the original line order while removing duplicates - first occurrence preserved.
Instant Results
Real-time duplicate removal as you paste or type. No waiting required.
Sort & Stats
Optionally sort results alphabetically. See total lines, unique lines, and duplicates removed.
100% Private
All processing happens in your browser. No data is sent to servers.
How duplicate detection works
Line-by-line comparison finds exact matches. Each line is compared to all others to identify duplicates based on your case sensitivity setting.
Preserving order means the first occurrence of each unique line stays in its original position. Sorting arranges unique lines alphabetically for easier organization.
Common Questions
How does duplicate detection work?
Each line is compared to find duplicates. You can choose case-sensitive matching (where 'Hello' and 'hello' are different) or case-insensitive (where they're treated as the same).
What happens to the original order?
By default, the original order is preserved - the first occurrence of each line stays in its position. You can also sort results alphabetically if needed.
Can it handle large text files?
Yes! There are no line limits. You can paste entire documents, logs, lists, or datasets with thousands of lines for instant duplicate removal.
Is my data stored?
No. All duplicate detection and removal happen entirely in your browser using JavaScript. We do not store, log, or transmit any of your text to our servers.
Ready to remove duplicates?
No sign-up, no installation. Start removing duplicate lines now.