SIMPLE. PRECISE. IN YOUR BROWSER.

Spot the difference.

Two lists. See what’s different, what’s shared, and everything in between.
Paste your items below. Results update as you type.

List A

Your first set of items.

List B

The list to compare it with.

Comparison options

UPDATES INSTANTLY

Case sensitiveTrim leading / trailing spacesIgnore extra spacesIgnore leading zeros

Sort resultsOutput caseOutput format

Your comparison

Add items above to get started.

A little set theory. A lot less work.

Only in A and Only in B show the differences. In both is the intersection: items the lists share. All unique is the union: every distinct item across the two lists.

How are duplicates and spaces handled?

Results contain each matching item once. Empty items are skipped. Comparison options determine what counts as a match; results preserve the first original spelling, using List A’s version for shared items. Output case only changes the displayed results.

From a spreadsheet, a file, or your clipboard.

Paste a column from your spreadsheet, or import a text file up to 5 MB. Each line is one item by default. Comma, semicolon, and tab splitting treat separators literally, including inside quotes.

Do my lists leave this browser?

No. Your lists are processed on this page, with no uploads or storage. Reloading the page clears your data. Download results to keep a copy.

No uploads. No accounts. Just the difference.