Remove duplicate lines from your text instantly
Paste your text into the input box and click "Remove Duplicates." The tool scans every line, keeps the first occurrence of each unique line, and removes all subsequent duplicates. You can toggle case sensitivity (so "Hello" and "hello" can be treated as the same) and whitespace trimming (to ignore leading/trailing spaces). The status shows how many duplicate lines were removed.
Go deeper
The calculator gives you the number. These SnoopTool guides explain the method, the assumptions and the decision — with worked examples, data tables and FAQs.
Short, exact answers to the questions people ask alongside this tool — the number first, then the working.
For teams, not just visitors
We build the calculators on SnoopTool as embeddable widgets in your branding, wired to your own lead form — the same maths, your colours, your domain, your leads. Tell us which one and we will send back a working demo you can put in front of your team.
Thanks — we have it, and you will get a reply from a person within one business day. Meanwhile every tool on SnoopTool stays free, with no signup.