Two keywords look identical but won’t dedupe? Invisible characters are the usual culprit. Remove them all in one click.
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 orderGot 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.
running shoes
trail shoes
hikingrunning shoes
trail shoes
hikingDeletes zero-width spaces, byte-order marks, soft hyphens and control characters you can’t see — the usual reason two identical-looking lines don’t count as duplicates.
Some characters take up no space on screen: zero-width spaces, zero-width joiners, byte-order marks and soft hyphens. Stray control characters are removed too. They sneak in from web pages, PDFs and spreadsheet exports and make “running shoes” fail to match “running shoes” for no visible reason. This operation deletes them.
If two lines look identical but Remove Duplicates keeps both, invisible characters are the usual cause. The Notepad also suggests this operation automatically when it detects them.
Yes. Remove Invisible Characters runs entirely in your browser, on this page and in the full Notepad, with no sign-up, no limits, and nothing sent to a server.
Paste it into the Notepad: when it finds any, it offers “Remove invisible characters” in the suggestions above the editor.
No. Only zero-width characters, the byte-order mark and soft hyphens are removed.
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The Invisible Character Remover 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