About Us
CompareMyLists.com is a free, browser-based tool designed to help you quickly compare two or more lists to find matches, differences, and duplicates — with complete privacy.
Why We Built This
Comparing lists is a common task — whether you're matching customer records, reconciling inventory, verifying data entries, or just trying to find what's different between two sets of items. Most solutions require expensive software, sign-ups, or uploading sensitive data to third-party servers.
We wanted a tool that is:
- Instant — paste your lists and get results in seconds.
- Private — everything runs in your browser. No data ever leaves your device.
- Free — no sign-up, no hidden fees, no premium tiers.
- Simple — no installation or technical knowledge required.
How It Works
Our comparator uses JavaScript to process your lists entirely on the client side. When you paste two lists and click "Compare," the tool:
- Tokenizes each list into individual items.
- Compares the sets to find matches, differences, and duplicates.
- Displays the results directly in your browser.
No data is sent to any server. Your lists never leave your device.
Our Principles
- Privacy First — We built the tool so that we physically cannot see your data.
- No Tracking — We don't use analytics, advertising pixels, or behavioral tracking.
- Accessibility — The tool works on any modern browser, on desktop or mobile.
- Transparency — Our code runs entirely in your browser. We have nothing to hide.
Contact
Have questions, feedback, or suggestions? Visit our Contact Us page — we'd love to hear from you.