Remove duplicate lines from any list or text instantly, with a live count of duplicates removed. Free, browser-based, no data sent to a server.
Word Counter Online — Count Words, Characters & Reading Time
Count words, characters, sentences, paragraphs, unique words and reading time in real time. Free online word counter — paste your text and get instant statistics.
Remove Line Breaks Online — Strip Newlines from Text
Remove unwanted line breaks from text instantly. Keep paragraph structure or strip every newline at once — free, runs in your browser, no data sent to a server.
Sort Lines Online — Alphabetical & Reverse Text Sorter
Sort lines of text alphabetically, in reverse or by natural sort — free and browser-based, with case-sensitive matching and empty-line removal built in.
Case Converter Online — camelCase, snake_case, Title Case & More
Convert text between 8 case formats instantly — UPPERCASE, camelCase, snake_case, kebab-case and more. Free, browser-based, no data sent to a server.
Trim Lines Online — Remove Leading & Trailing Spaces from Text
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Add Line Numbers Online — Free Line Numbering Tool
Add line numbers to any text instantly. Configure start number, separator style and zero padding. Free, works in your browser — no data sent to a server.
A free online duplicate line remover that cleans any list or text in one paste. Keeps the first occurrence of each line and deletes the rest — with a live count of removed duplicates. Supports case-sensitive comparison and empty line removal. Runs entirely in your browser — no data is sent to any server.
Paste your list into the duplicate line remover
Type or paste any text into the input field — one item per line. The tool works with lists, logs, datasets, email addresses or any line-separated content.
Choose case sensitivity if needed
By default the tool treats 'Apple' and 'apple' as duplicates. Enable Case sensitive to keep them as separate unique lines — useful for code identifiers and filenames.
Optionally remove empty lines
Toggle Remove empty lines to strip blank lines from the output along with duplicates — useful when cleaning up exported data or pasted lists with irregular spacing.
Copy the deduplicated result
The output updates instantly. A counter shows how many duplicate lines were removed. Click Copy to grab the clean list and paste it wherever you need it.
Paste your text into the input field — duplicates are removed instantly, keeping the first occurrence of each line. A counter shows how many lines were removed. Click Copy to grab the clean result.
By default, this tool treats 'Apple' and 'apple' as duplicates of each other. Enable Case sensitive to compare lines exactly as written, which matters for code, filenames and identifiers where capitalisation is meaningful.
Toggling Remove empty lines strips blank lines from the output at the same time as deduplicating. This is useful when cleaning exported CSVs, log files or pasted lists that have irregular blank lines mixed in.
All text processing happens locally in your browser, so nothing you paste is ever sent to a server. The tool keeps working fully offline once the page has loaded, and your content never leaves your device.
Any line-separated content: email lists, URLs, product names, log entries, code lines, keywords or exported spreadsheet data. Paste the list, remove duplicates, copy the result — no formatting required.
Yes — clicking Load example fills the input with a small fruit list that has exact and mixed-case duplicates. Running it with default settings shows how 'Apple' and 'apple' collapse into one entry, since matching is case-insensitive unless you enable Case sensitive.