Compare Two Lists
Compare two lists to find items that appear in both, in only one, or the unique union of both. Fast, free, and entirely in your browser.
Intersection & Difference
Unique Union
Case Sensitive Option
Trim Whitespace
Live Results
Copy & Download
- Paste List A: Enter or paste your first list into the List A box, one item per line.
- Paste List B: Enter or paste your second list into the List B box, one item per line.
- Choose a Result: Pick what to see — items in both lists, items only in A, items only in B, or the unique union of both.
- Copy or Download: Use the copy button to grab the result, or download it as a .txt file.
Reconciling data between two sources is a common chore — comparing email exports, config files, or subscriber lists. This tool turns that manual eyeballing into a deterministic, repeatable operation.
- Reconcile data: Find rows present in one export but missing from another.
- Clean merges: Build a deduplicated union before importing into a database or spreadsheet.
- Verify migrations: Confirm the same entries survived a move between systems.
- Private by design: Processing never leaves your device, so sensitive lists can be compared freely.
Other Tools
Color Contrast Checker (WCAG)
Check color contrast ratio between foreground and background colors. Ensure your design meets WCAG 2.1 AA and AAA accessibility standards.
Color Converter
Convert colors between HEX, RGB, HSL, CMYK, and CSS color names. View color previews and copy formats easily.
Color Palette Generator
Generate beautiful, harmonious color palettes from any base color. Create complementary, triadic, tetradic, and analogous color schemes using free online Color Palette Generator tool.
Credit Card Validator
Validate credit card numbers using the Luhn checksum algorithm and detect the card issuer. Safe and secure, client-side validation for Visa, Mastercard, Amex, and more.
Crontab Generator
Quickly and easily generate cron schedule expressions for your cron jobs using free online Crontab Generator tool.
CSS Keyframe Animation Builder
Create CSS @keyframes animations visually with a drag-and-drop timeline. Preview in real-time, customize timing functions, and export production-ready code.