Text & links / Local utility
List Comparison
Find entries only in A, only in B, or shared by both. Each line is one item; commas, pipes, quotes and semicolons stay inside the item.
Compare two lists
Each input: at most 20,000 characters, 1,000 lines including blanks, and 1,000 characters per item. Truly empty lines are ignored. With trim off, whitespace-only lines are items. A final line terminator does not create an extra item. Browser textareas may normalize pasted line endings.
Default: exact, trim off, unique items. Original inputs are never transformed. Matching remains accent-sensitive and does not normalize Unicode.
Understand duplicates and ordering
Unique mode emits each matched item once in a result. Duplicate-count mode matches the smaller occurrence count as shared; unmatched extra occurrences remain in A-only or B-only. An item can therefore appear in both Shared and an only-list result.
Results follow first appearance in A for A-only and Shared, and in B for B-only. Shared values use A’s first spelling; B-only uses B’s. Trim affects result spelling only when selected. Lowercase matching is not full locale-specific case folding, so some language-specific equivalences differ. The detailed counts show both lists’ occurrences.
Selectable results
Focus any result and select/copy with your keyboard if desired. No automatic clipboard, file or print action. Editing inputs or options invalidates results.
Per-item occurrence counts
Quoted values show whitespace and separator-like characters clearly; counts identify original occurrences and emitted result entries.
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