List Overlap · guillaume.ai

A little clarity, line by line

Find what your lists share.

Two lists. See what’s shared and what stands apart.

A List A B List B

Case-sensitive · Edge spaces ignored for matching · Duplicates counted once

Matching & limits

Ignore letter case Ignore spaces at the start and end

Blank and whitespace-only lines are skipped. Duplicate matches become one item. Results keep the first original line, including its spelling and spaces. Common items use List A’s version; each group follows its source order.

Internal spaces, punctuation and accents remain distinct. Case-insensitive matching uses lowercase comparison, not language-specific name matching.

Per list: up to 200,000 characters, 10,000 lines and 2,000 characters per line. Unsupported control characters are rejected. Nothing is silently shortened.