Remove Duplicate Lines
Instantly clean up your lists by removing repeated entries while keeping the original order.
Ultra Fast
Processing happens instantly in your browser without any server delays.
100% Private
Your text data never leaves your computer. All work is done locally.
Large Lists
Efficiently handle massive lists via drag & drop upload.
Practical Examples
Email List
Clean up a mailing list by removing repeated email addresses.
CSS Classes
Deduplicate a list of CSS classes or keywords.
Product IDs
Remove duplicate product identifiers or serial numbers.
Keyword List
Sanitize a list of SEO keywords or tags.
How to Remove Duplicate Lines from Text Online
Cleaning up lists manually can be a tedious task, especially when dealing with large datasets. Our Remove Duplicate Lines tool simplifies this process, allowing you to quickly deduplicate lists, sanitize data, and organize your text with just a few clicks.
1 Input Your Text
Paste your list directly into the editor or drag and drop a text file (.txt, .csv, .md). The tool supports large files and processes them instantly in your browser.
2 Configure Options
Choose whether to perform a case-sensitive search or trim whitespace from the beginning and end of each line before comparing.
Why Use This Tool?
- Order Preservation: Unlike many other tools, we keep the original order of your lines.
- Browser-Based: Your data is never uploaded to any server, ensuring 100% privacy and security.
- Completely Free: No limits, no subscriptions, just a fast and efficient tool for your daily tasks.