Keysearch Keyword Difficulty Checker is a search tools chrome extension. it's a free extension , it has 3,000+ active users since released its first version, it earns an average rating of 3.60 from 15 rated user, last update is 847 days ago.
Check keyword difficulty right from your browser! Just put in your Keysearch API key and you can check the SEO keyword difficulty of any keyword.
You could download the latest version crx file or older version files and install it.
English.
43% user give 5-star rating, 57% user give 1-star rating. Read reviews of keysearch keyword difficulty checker
You could find more help information from keysearch keyword difficulty checker support page.
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More about manifest_file of keysearch keyword difficulty checker.
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paid tool
This is an addon for the keyword tool KeySearch, and it does exactly what it says. It shows you how strong the competition is. And if you happen to don't believe the competition calculation, you can still see all the numbers that make the up the competition to get a great overview (which are even color coded to make it easier). Remember, this is part of a paid product, so I guess all the negative reviews that says it doesn't work, are people that thought it was free. You need an API key from your account, which it does mention in the description.
The difficulty it shows is completely fictional, at least for longer-tail, lower-volume keywords. For those types, it just doesn't work AT ALL. Maybe it works for big keywords, but I don't deal with those so have no idea.