Blog
Practical guides for cleaning, sorting and deduping lists.
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Compare two lists: find what's shared, added, or missing
Compare two lists in Listalyze to find what's only in one, what's in both, and the union — with email/URL normalization — in your browser, nothing uploaded.
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How to use Listalyze
A short tour of what Listalyze does — sort, clean, dedupe, regex, find, compare, and big files offline — with a one-line how-to and a link for each.
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Remove duplicate emails from a list
Dedupe an email list in three steps in Listalyze — including case and whitespace variants — in your browser, on files too big for Excel, without uploading anything.
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How to sort a large list (alphabetical, numeric, natural, by column)
Sort lines in Listalyze — A→Z, numeric, natural (item2 before item10), or by a CSV column — in your browser, on files too big for a spreadsheet, without uploading anything.