URL List Comparator – Compare Two URL Lists Online Free
About the URL List Comparator
The URL List Comparator lets you compare two sets of URLs and instantly find differences between them. Paste your old and new URL lists, choose a comparison mode, and the tool returns unique URLs, common URLs, or URLs missing from either list — perfect for tracking changes during site migrations, redesigns, or content audits.
This tool is built for SEOs, developers, and webmasters who need to spot URL changes quickly — whether you’re checking which pages were removed after a migration, finding duplicate URLs across crawls, or comparing sitemap exports before and after a redesign. If you need to clean either list before comparing, use the Remove Duplicate Lines tool to eliminate duplicate entries first. No manual spreadsheet work required.
How to Use the URL List Comparator
- Paste your first set of URLs into the Old List box, one URL per line.
- Paste your second set of URLs into the New List box, one URL per line.
- Choose a comparison mode: Unique All, Unique Old, Unique New, Only Old, Only New, or Common.
- Click Process to generate the results instantly.
- Click Copy to copy the output, or Download to save it as a .txt file.
Example Usage
Old List:
https://example.com/ https://example.com/about https://example.com/contact
New List:
https://example.com/ https://example.com/about https://example.com/blog
Result (Only Old):
https://example.com/contact
This quickly identifies URLs that no longer exist in the new list, making it useful during site migrations or content audits. After identifying removed pages, use the Redirect Chain Checker to verify they redirect correctly to their new destinations.
Frequently Asked Questions
It compares two lists of URLs and shows you the differences — such as URLs unique to one list, common to both, or missing entirely — based on the comparison mode you select.
“Only Old” shows URLs that exist in your old list but not in the new one (often removed pages). “Only New” shows URLs that exist in the new list but not the old one (newly added pages).
Yes. Select “Unique Old” or “Unique New” to remove duplicate entries from a single list, or “Unique All” to deduplicate both lists combined.
No strict limit is enforced, but for best performance we recommend keeping each list under a few thousand URLs.
Yes, this tool is completely free with no signup required.
