Text list set operations

Compare line-based text sets with explicit whitespace, NFC and lowercase matching rules.

Your input

Outputs are cleared when the input changes.

Result

Enter your data or use the example, then run the tool.

Worked example

Left a,b,b and right b,c have intersection b, union a,b,c and symmetric difference a,c.

With trim disabled, “a” and “ a ” remain different keys.

Method

Build keys using only enabled matching transformations, then apply Set operations with stable first-seen order.

Duplicates are counted separately. Empty-line handling is explicit; only enabled trim alters displayed whitespace.

Limits

Each list has at most 100,000 lines and 5 MiB UTF-8. No fuzzy matching.

Unicode lowercase is not full language-aware matching: ß is not automatically equivalent to ss.

Sources

MDN: Set collection semantics

Your inputs stay on this device. Only optional, consented page visits are measured. Input values, files, filenames and processing logs are not sent to Analytics.

When switching languages, text, settings and selected files are temporarily kept on this device. Transfers are removed after restoring; interrupted transfers are cleaned up on a later visit. Inputs and files are never uploaded.