Compare Lists
Paste two lists (one item per line) to find which items are in both, only in the first, or only in the second. Everything runs in your browser.
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About Compare Lists
Compare Lists takes two lists — emails, customer IDs, product SKUs, URLs, names, roll numbers — one item per line, and sorts every item into three groups: in both lists, only in list A, and only in list B. It is the quick answer to "who is missing from this list?" or "which products are new?".
Duplicates inside each list are removed before comparing, and you can ignore case, trim spaces, skip blank lines and sort the results. Each group has a count and its own Copy button. It runs entirely in your browser, so nothing you paste is uploaded.
How to use Compare Lists
- Paste the first list into List A and the second into List B, one item per line.
- Choose options such as ignore case or trim spaces.
- Press Compare Lists and copy the group you need.
Key features
- Three results: in both, only in A, only in B
- Duplicates within each list removed automatically
- Ignore case, trim spaces, skip blanks, sort
- Copy any group with one click
When to use Compare Lists
- Finding which students, employees or customers are missing from a second list.
- Comparing two email lists before a mail-out to avoid duplicates.
- Checking which product SKUs are new in this month's export.
Tips and common problems
- Turn on Trim spaces when lists were copied from spreadsheets — trailing spaces stop items matching.
- Turn on Ignore case for emails and names.
- Paste a column straight from Excel; each cell becomes one line.
Frequently asked questions
Text Compare cares about order and position, like comparing two versions of a document. Compare Lists treats each list as a set of items, so order does not matter.
Yes. Copy a column in Excel or Google Sheets and paste it into a list box — each cell becomes one line.
Comparison is case-sensitive by default. Turn on Ignore case.
Guides
- How to Remove Duplicate Lines — Remove duplicate lines from lists of emails, URLs, keywords or SKUs, and learn the options that matter: case sensitivity, trimming, sorting, duplicates only.
- Regex Patterns for Indian Phone Numbers, PIN, PAN, GSTIN and IFSC — Ready-to-use regex for Indian mobile numbers, PIN codes, PAN, GSTIN, IFSC and more, explained part by part, with the limits of what a pattern can check.