RemoveDuplicates.org
Working · 1.9 sRemove duplicate lines or CSV/TSV rows from text. Stateless: processed per call, never stored.
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remove_duplicates
Remove duplicate lines from a text list, or duplicate rows from CSV/TSV text such as rows copied from Excel or Google Sheets. Uses the same engine as removeduplicates.org and returns the cleaned text with counts. Stateless: the text is processed in memory for this call only and is never stored.
The list or table text: one item per line, or CSV/tab-separated rows. Up to 131072 UTF-8 bytes.
Which occurrence of a duplicate survives.
Ignore surrounding spaces when comparing and return trimmed values.
preserve keeps the original order; sort returns a natural (numeric-aware) sort.
auto detects CSV/TSV tables; lines compares whole lines; table forces CSV/TSV parsing.
Tables only: keep the first row as a header outside duplicate checks and counts.
Tables only: "row" compares entire rows; a zero-based column index or an array of indices compares only those columns.
Treat values such as Apple and apple as duplicates.
Drop blank lines or all-blank rows.
Tools (1)
remove_duplicatesRemove duplicate lines from a text list, or duplicate rows from CSV/TSV text such as rows copied from Excel or Google Sheets. Uses the same engine as removeduplicates.org and returns the cleaned text with counts. Stateless: the text is processed in memory for this call only and is never stored.
Remove duplicate lines from a text list, or duplicate rows from CSV/TSV text such as rows copied from Excel or Google Sheets. Uses the same engine as removeduplicates.org and returns the cleaned text with counts. Stateless: the text is processed in memory for this call only and is never stored.