Text Delimiter / List Builder
Build custom lists, SQL IN clauses and programming-language arrays.
Open toolText and lists
Duplicate Data Finder
Find duplicate list items, counts and source positions.
Processed in your browser. Input and output are not uploaded. Maximum combined input: 1,000,000 UTF-8 bytes; output: 4 MiB.
How to use and limits
Paste input, choose settings and select find duplicates. Review your result before copying, downloading or continuing in another tool.
Related tools
Continue with another tool. Choose whether to bring your result, your original data, or start without carrying data.
Remove Empty Lines
Remove blank lines while preserving the remaining text.
Open toolSort Lines
Sort a list before generating output.
Open toolList Comparison
Find common items, differences and the union of two lists.
Open tool