ProToolBox

Remove Duplicate Lines Free — Live Dedupe & Copy

Paste one item per line. The sticky panel shows how many duplicate rows drop out, line and character before→after, words, read time, and a copy-ready unique list—no upload, no signup, no watermark.

Remove duplicate lines input and live preview

Lists, logs, emails, and CSV-style paste—big duplicate count, full stats grid, readonly unique output, and Copy unique lines in one flow.

1 Paste lines · 2 Edit · 3 Live unique preview · 4 Copy unique lines

Live preview

Rows match after trim; case matters (apple ≠ Apple). First row wins. Extra blank lines collapse to one empty row.

Runs in this tab only—no server upload, no signup, no watermark.

Your deduped list will show here.

Paste one item per line on the left—the big number is how many duplicate rows were removed. Lines, characters, words, read time, and unique output update live—no upload.

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  • Works in your browser—runs on your device, not our servers
  • No upload required—your input stays in this tab
  • Free and instant
  • No account needed
  • Private by default—the same ProToolbox promise on every page

What this is for

Remove Duplicate Lines Free — Live Dedupe & Copy is part of the ProToolbox text stack: works in your browser, no upload required, free and instant. Paste, measure or clean, copy—before publish, deadlines, or tight character limits.

  • Re-run after every real edit; limits drift fast
  • Pair with reading time or keyword tools when SEO or ads matter
  • No account needed—your draft stays in this tab
  • Cover letters, meta text, captions, attachments

Remember: Apps count characters differently—when a cap is hard, match the destination’s rules.

Bookmark this page—deduping exports, mailing lists, and log snippets is a repeat task. One tab beats re-running five different sites.

Built for repeated rows and noisy paste

Spreadsheet exports, mailing lists, and stack traces often carry the same line many times. This tool keeps order, keeps the first copy of each trimmed row, and shows exactly how many duplicates disappeared—locally, with no server round-trip.

How it works

  1. Paste or type in Your lines. Live preview updates instantly (sticky on wide screens).
  2. Scan the large duplicate rows dropped count first, then lines and characters before→after, words, read time, and the unique output box.
  3. Read the gray What this means / Next note, then Copy unique lines for the list only.

What each metric means

  • Duplicate rows dropped — input lines minus unique lines after trim-based matching.
  • Lines / characters (before → after) — length and row count shrink when repeats (or extra blank rows) disappear.
  • Words / read time — computed on the unique output (~200 wpm); pair with Reading time for tuning.

Privacy: Deduplication is designed to run locally in your browser. We do not store your paste on our servers.

FAQ

  • Is my text uploaded? No—everything runs in your browser until you choose Copy unique lines.
  • Do I need an account? No signup; the tool is free.
  • Are blank lines deduped? Yes—trimmed empty rows share the same key, so you keep one blank line.
  • What does Copy unique lines include? Only the deduplicated text from the preview—not the stats block.
  • Can I use it on my phone? Yes—the layout stacks; paste, edit, and copy the same way.

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