100% local and secure
Your data stays on your device and is never sent to our servers.
Combine the contents of several lists into one result, preserve item order, and get a final list ready to use.
Combine two lists into one result, with the option to keep or remove duplicates.
Your data stays on your device and is never sent to our servers.
Transform and analyse text with focused, fast, and readable operations.
Plain text, pasted content, and text files depending on the tool.
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Fonctionnement
Merge lists processes your data directly in the browser using the logic specific to this tool. Combine the contents of several lists into one result, preserve item order, and get a final list ready to use. Start by entering the required values or content, then adjust the available options before reviewing the result. The workflow is designed to stay clear and repeatable: changes to the inputs are handled by the relevant engine so you can check the output quickly before copying, downloading, or reusing it in another step of your work.
Use Merge lists to complete a common task quickly without installing additional software or preparing a complicated manual process.
Use Merge lists to check a value or transformation produced elsewhere and identify an input or method mistake more easily before relying on it.
Include Merge lists in a browser-based workflow when you want a simple, repeatable process that keeps processing as local as the tool allows.
Guide
Paste values into both input areas.
Decide whether duplicates should be kept.
Retrieve the final list in the resulting order.
Yes. Deduplication can be enabled or disabled depending on the desired result.
No. Processing happens locally in your browser.
Yes. The tool is free and requires no account.
Learn how to align headers, verify schemas and combine several CSV or Excel files while avoiding duplicated or shifted columns.
Learn when to filter rows, sort records, keep only useful columns and rename headers so a CSV is easier to analyze, merge or export.
Understand how to define a reliable duplicate key, distinguish exact and business duplicates, and validate a CSV before and after deduplication.
A practical workflow for checking, merging, reordering, sanitizing, compressing and protecting a final PDF before sending it.
Recommended workflow
Discover tools that naturally fit before, after, or alongside this one.
Compare two lists to identify shared items and values that differ between them.
Sort list items alphabetically, numerically, or using the ordering option you choose.
Split a long list into evenly sized groups using the number of items you choose.