Remove repeated entries from a list without editing them one by one. Choose whether surrounding spaces, empty lines and letter case should affect the result. Original first-seen order is preserved by default; sorting is an optional, separate choice.
Decide what counts as the same line
Two entries may look alike while containing different leading or trailing spaces. Trimming removes surrounding whitespace from each line before comparison. It does not join words or remove spaces in the middle of an entry. Keep trimming off if indentation or trailing spaces are meaningful to the data you are handling.
Case-insensitive matching treats entries that differ only by uppercase and lowercase letters as duplicates. That can help with a casual name list, but it may be wrong for identifiers or paths whose letter case matters. Decide based on the meaning of your list, not simply on which option removes the most lines.
Example: clean a short shopping list
Suppose the entries, in order, are Milk, bread, Milk and BREAD, with an extra space after the first Milk. With trimming and duplicate removal enabled, the two Milk entries become one. With case-insensitive matching also enabled, bread and BREAD become one entry. The first occurrence supplies the retained spelling.
With sorting off, the result keeps Milk before bread because that was their first appearance. Turn sorting on only if an alphabetical list is more useful. Sorting and duplicate removal solve different problems: removing repeats does not require changing the original sequence.
Treat each line as a complete entry
The tool compares lines. It does not compare individual words within a paragraph or find similar phrases with different spelling. Two lines containing the same words in a different order remain different. Punctuation and internal spacing can also distinguish entries, even when surrounding whitespace is trimmed.
For a table, duplicate lines mean duplicate complete rows. The tool does not select a particular column as the unique key. If two customer rows share a name but have different addresses, they remain distinct lines. Use a table-aware workflow when uniqueness depends on one field rather than the whole row.
When the output is surprising
If apparent duplicates remain, inspect letter case, punctuation and spaces inside each line. Visually similar characters can also be different characters. This is a text cleanup tool, not a system for deciding that two names or identifiers refer to the same real-world item.
If too much disappears, disable case-insensitive matching or trimming and run the original input again. Empty-line removal is useful for copied lists but can erase intentional section breaks. Start with fewer options when the text has structure, then compare the result before replacing your working copy.
Frequently asked questions
Does removing duplicates sort my list?
No. First-seen order is preserved by default. Sorting is optional, so a checklist or priority list can keep its original sequence while repeated lines are removed.
Will this rewrite my words?
The tool applies only the cleanup options you select. It does not paraphrase, correct spelling or identify approximate duplicates. Case-insensitive comparison does not mean every output entry is rewritten in lowercase.
Is my pasted text uploaded?
The text is processed locally in your browser and is not uploaded for cleanup. Copy or download the output before reloading the page, and keep your original when you need a record of removed entries.