What is this duplicate keyword remover?
A free, browser-based tool that takes a list of keywords or phrases — separated by commas or newlines — and removes the duplicates, keeping the first occurrence of each. Matching is configurable: ignore case, trim surrounding whitespace, and collapse runs of inner whitespace, so near-identical entries are caught too. The original order is preserved and you can copy or download the cleaned list. Everything runs locally in your browser, so your data is never uploaded.
How to use it
- Paste your keyword list into the box on the left (comma or newline separated).
- Pick the separator — Auto handles both commas and newlines.
- Toggle the matching options (ignore case, trim, collapse whitespace) to fit your data.
- Read the before / after counts, then copy the result or download it as a text file.
Common use cases
- Cleaning a keyword research list before importing it into a search-ad campaign or SEO tool.
- De-duplicating tags, hashtags, or category labels collected from several sources.
- Merging exported keyword lists where the same term appears with different casing or spacing.
Removing duplicate keywords in Google Ads (AdWords)
In Google Ads (formerly AdWords), a true duplicate is the same keyword text in the same match type — duplicates make your own keywords compete in the same auction and split their history. When you export or paste a keyword list, keep the match-type markers so the tool only merges genuine repeats, not the same term in a different match type:
| Match type | How you write it | Example |
|---|---|---|
| Broad | keyword | running shoes |
| Phrase | "keyword" | "running shoes" |
| Exact | [keyword] | [running shoes] |
So [running shoes] and "running shoes" are kept as two separate entries (different match types), while a second [running shoes] is removed. Google Ads treats keywords case-insensitively, so leave "Ignore case" on; turn on "Collapse inner whitespace" to also catch entries that differ only by extra spaces.
