Append List Items – Merge Lists Tool Online
Append and merge lists instantly. Combine multiple lists with duplicate removal. Free, secure, client-side tool.
Combine two lists by appending List B to List A.
How to Use Append List Items – Merge Lists Tool Online
- Enter List A - Paste your first list
- Enter List B - Paste your second list
- Choose Options - Remove duplicates if needed
- Click Append - Lists combined instantly
Frequently Asked Questions
Is my data secure?
Yes! All processing happens in your browser. Nothing is uploaded.
Is this free?
Yes, completely free. No limits.
Can I merge more than 2 lists?
Run the tool multiple times – append A+B, then append result+C, etc.
Does this work offline?
Yes, once loaded, the tool runs entirely offline in your browser without internet connection.
What separators are supported?
Newline, comma, semicolon, tab, pipe, and space separators are all supported for both lists.
How does duplicate removal work?
When enabled, the tool removes exact duplicate items from the combined list, keeping only unique entries.
Can I use different separators for each list?
Yes, List A and List B can each have their own separator type selected independently.
What happens to empty items?
The “Skip empty items” option (enabled by default) automatically removes blank lines from the output.
Can I download the combined list?
Yes, click the “Download as TXT” button to save the merged list as a text file to your device.
How do I preserve the order of items?
Items maintain their order: all items from List A appear first, followed by all items from List B.