🧹 Cleaning

Remove Duplicate Lines

Duplicates inflate your keyword counts, waste your tool credits and make every report wrong. Paste the list and they are gone — first copy kept, order untouched.

  • 100% free, no limits
  • No sign-up
  • Your data never leaves your browser
  • Results in under a second

Free tool Paste your list — the Remove Duplicate Lines tool does the rest

The example below is already loaded, so you can see exactly what you get. Replace it with your own list and the result updates as you type.

🧹 Doing the whole job? Clean a keyword list → every fix for it, ticked and in the right order 🔗 Doing the whole job? Clean a URL list → every fix for it, ticked and in the right order

Got a bigger job? The full Notepad runs the same engine on lists of any size — chain this with dedupe, sort and filter, undo any step, and save the whole routine as a recipe for next time.

Example Remove Duplicate Lines tool: before and after

Before
running shoes
Running Shoes
running shoes
After
running shoes
Running Shoes

How it works What the Remove Duplicate Lines tool does

Keeps only the first occurrence of each line using a character-perfect match — "Buy Shoes" and "buy shoes" are treated as two different lines and both are kept.

3 steps How to use the Remove Duplicate Lines tool

  1. Paste your list into the box above — one item per line. Keyword exports, crawl exports and spreadsheet columns all work.
  2. Check the settings — there are none to set; the result appears straight away.
  3. Copy the result and paste it wherever it needs to go. Nothing is uploaded, so client and confidential data stay on your machine.

Use it to When to use the Remove Duplicate Lines tool

  • Deduplicate a keyword list before uploading it to a PPC campaign
  • Clean a URL list exported from a crawler before a content audit
  • Remove repeat entries after merging two exports from the same tool

FAQ Remove Duplicate Lines tool questions

Is this tool free to use?

Yes. Remove Duplicates (Exact) runs entirely in your browser below, with no sign-up, no limits, and nothing sent to a server.

What's the difference between this and the case-insensitive version?

This version treats "Shoes" and "shoes" as different lines. Use Remove Duplicates (Case-Insensitive) if you want those merged too.

Pairs well with More Cleaning tools, all free

Stop fixing lists by hand

The Remove Duplicate Lines tool is one of the free tools inside Seowolf’s Notepad. Paste a list once, then dedupe, filter, sort, compare and format it in seconds — every step undoable, nothing uploaded, no account.

Open the Notepad — it’s free
← Browse all free tools
KnownHost