Quick Answer
Messy pasted text often has three problems at once: repeated lines, blank lines, and inconsistent spacing. Fixing those first makes lists, emails, exports, and spreadsheet data much easier to use.
Step-by-Step
- Paste the raw text and remove extra spaces or tabs so each line is easier to compare.
- Remove empty lines when blank rows are not meaningful.
- Remove duplicate lines after trimming whitespace so hidden spaces do not create false differences.
- Decide whether matching should ignore case and whether to keep the first occurrence, last occurrence, or only unique lines.
- Copy or download the cleaned result, then spot-check important rows before replacing the original.
Recommended Workflow
Open the most relevant calculator or utility first, enter a realistic starting point, then use the supporting tools to check assumptions, clean inputs, or prepare the final output.
FAQs
Should I remove spaces before duplicate lines?
Usually yes. Trimming extra spaces first prevents visually identical lines from being treated as different.
When should I keep empty lines?
Keep empty lines when paragraph breaks, sections, or readable spacing matter. Remove them for lists, CSV cleanup, and spreadsheet imports.
What is the difference between dedupe and unique lines only?
Dedupe usually keeps one copy of repeated lines. Unique lines only removes every value that appears more than once.