Paste your two lists
Paste one list into each box — one item per line — or drag and drop a .txt or .csv file. Copying a column straight from Excel or Google Sheets also works.
Comparable List — Free Online List Comparison Tool
Compare two lists instantly — find matches, differences, and unique values. Free, no signup, nothing uploaded.
Compare Two Lists Online
Compare listsInstagram followersSoonJSON compareSoonCSV compareSoon
Paste text, drop a .txt / .csv file, or paste a column from Excel.
Paste text, drop a .txt / .csv file, or paste a column from Excel.
Paste two lists above and the comparison appears here instantly — matching items, differences, and unique values update as you type. Nothing is uploaded; everything runs in your browser.
How it works
Three steps, zero friction
No signup, no upload, no waiting. Comparing lists should take seconds — and that is exactly how long it takes.
Watch results update instantly
No submit button, no page refresh. Matching items, differences, and unique values appear as you type, with a Venn diagram that visualizes the overlap.
Copy, download, or share
Copy any result with one click, or share your comparison with a link. Every comparison stays in your browser — nothing is ever sent to a server.
Use cases
What can you compare?
Any two lists of lines — people use Comparable List for everything from audience audits to data cleanup.
Instagram followers vs. following
Find accounts that don't follow you back by comparing your followers and following lists side by side.
Email & mailing lists
Merge two subscriber lists, spot new signups, and clean duplicates before your next campaign.
CSV & Excel columns
Paste two columns from a spreadsheet and see which values changed, appeared, or disappeared.
JSON values & API data
Compare IDs, keys, or records returned by two API calls to find what's new, missing, or unchanged.
Inventory & SKUs
Reconcile two stock lists and find products that are missing from one system or the other.
CRM & contact lists
Diff two exported contact lists before merging, so no lead is lost and nothing is duplicated.
SEO keyword lists
Compare keyword lists from different tools or dates to see which rankings you gained and lost.
Any two lists at all
Todo lists, names, domains, server logs, usernames — if it's a list of lines, this tool compares it.
FAQ
Frequently asked questions
How do I compare two lists online?
Paste each list into one of the two boxes above — one item per line — and the results update instantly as you type. You can also upload .txt or .csv files, or paste a column copied from Excel. The tool shows matching items, items that only appear in one list, and the complete set of unique items, with a Venn diagram that visualizes the overlap.
What is a comparable list?
A comparable list is any list of items you want to compare with another — for example two lists of Instagram followers, two mailing lists, or two inventory sheets. This free comparable list tool finds the items the two lists have in common, the items that appear in only one of them, and the full deduplicated combination of both.
Can I compare Instagram followers and following lists?
Yes. Export your followers and following data from Instagram, then paste or upload the files. Enable the “Ignore case” option if usernames differ in capitalization, and the tool will show accounts you follow that do not follow you back — and vice versa.
Can I compare CSV files or Excel columns?
Yes. Upload a .csv file to either box, or copy a column from Excel or Google Sheets and paste it in. If you paste multiple columns, enable the “Split by tabs” option so every cell is treated as a separate item.
Is this list comparison tool free?
Yes — completely free, with no account, no signup, and no limits on list size. There is nothing to install; it runs in your browser on any device.
Are my lists uploaded to a server?
No. All comparison happens locally in your browser with JavaScript. Your data never leaves your device, which makes this tool safe for private lists such as customer emails, employee data, or internal records. Shared links store the data in the URL itself, not on any server.
Does the tool remove duplicates?
Yes. Duplicate items within a list are counted once, so the counts you see are the true sizes of each set. The “All unique” tab shows the deduplicated combination of both lists, which is the fastest way to remove duplicates from two lists at once.
How does the Venn diagram work?
The Venn diagram represents each list as a circle whose area is proportional to the number of items it contains. The overlap between the circles shows how many items appear in both lists. It updates live as you type, giving you an at-a-glance picture of how similar your two lists are.
Can I compare JSON files or code?
You can paste JSON array values or log lines into the tool today. A dedicated JSON comparison tool and a CSV diff tool are on the roadmap — check the changelog for updates.