Unique lines • keep first/last • ignore case • export TXT

Duplicate Line Remover

Paste a list — we’ll remove duplicate lines and keep the unique set (in original order or sorted).

Paste text (one item per line)
Tip: For keyword lists, enable Trim lines + Ignore empty.

Output

Quick interpretation

Duplicates in lists cause messy imports and noisy SEO operations.

  • Unique easier to process and validate
  • Ignore case treats “Apple” and “apple” as same
  • Keep last useful when the newest line should win
Text cleaning

Duplicate Line Remover: clean lists fast

Duplicate lines happen in keyword exports, outreach lists, URLs, and scraped datasets. This tool removes duplicates in seconds while letting you control rules like case sensitivity, trimming, and keeping the first or last occurrence.

When it’s useful

  • Cleaning keyword lists before clustering or uploading to tools.
  • Deduplicating URLs for crawls and audits.
  • Preparing lists for outreach, email, or link building workflows.

Best practice tips

  • Enable Trim lines to avoid duplicates caused by spaces.
  • Enable Ignore empty to skip blank rows.
  • Use Sort unique only if order doesn’t matter.

FAQ

What does “Remove duplicates” do?

It scans your text line by line and removes repeated lines. The output keeps only one version of each line based on your selected rules (keep first/keep last, ignore case, trim, etc.).

What’s the difference between “keep first” and “keep last”?

Keep first keeps the first time a line appears and removes later duplicates. Keep last keeps the last occurrence (useful if newer values should win).

Does “Ignore case” change the output text?

No. It only affects comparison. For example, Apple and apple will be treated as duplicates, but the kept line keeps its original casing.

Why should I enable “Trim lines”?

It removes leading/trailing spaces before comparison. This prevents fake duplicates like keyword vs keyword .

What does “Ignore empty lines” do?

It skips blank rows entirely. This is helpful when your list has extra empty lines from copy/paste.

Should I use “Sort unique”?

Only if the original order doesn’t matter. Sorting can be convenient for alphabetized keyword lists, but it changes the line order compared to your input.

Why are my line counts different than I expected?

Counts depend on settings. For example, enabling Trim and Ignore case will merge more lines into duplicates. Also, “Ignore empty lines” reduces total kept lines.

Can I download the cleaned result?

Yes. Use Copy output to copy to clipboard, or Download TXT to save the unique lines as a plain text file.