Keyword density checker

See which words and phrases your text repeats most, and check that your main keyword isn’t overused.

Sealed on this device

Runs in your browser. Nothing is uploaded.

Sealed

Settings

Short lists of the most common words for each language. Phrases never start or end with one.

Words
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Different words
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Most frequent

Paste some text to see its keywords.

How it works

  1. Paste your text

    Paste an article, a landing page or a product description. Choose its language so common words are filtered correctly.

  2. Read the top keywords

    See single words, 2-word and 3-word phrases ranked by how often they appear, with their share of the text.

  3. Check your main keyword

    Type your target keyword to see how often it appears, then rewrite where it feels repetitive.

Frequently asked questions

How is keyword density calculated?

Density is the number of times a word or phrase appears, divided by the total number of words in the text. For example, a phrase used 5 times in a 500-word text has a density of 1%.

What is a good keyword density?

There is no ideal number. Search engines reward text that reads naturally and covers the topic well. If one word stands far above the others, or a sentence sounds forced, it’s a sign to use synonyms and related terms instead.

What are stop words?

They’re very common words like “the”, “and” or “of” that appear in every text and say little about its topic. Hiding them makes the meaningful keywords stand out. You can turn the filter off to see everything.

Does it work with Chinese, Japanese or Thai?

Yes. These languages don’t put spaces between words, so the tool uses your browser’s built-in language rules to find word boundaries. Choose the right language for the best results.

Is my text stored or sent anywhere?

No. The analysis runs entirely in your browser. Your text never leaves your device.

Install One For All on your computer

One For All then opens in its own window, like an app, straight from your desktop or home screen. Nothing to download from a store, and your files still stay on your device.

  1. Click the install icon at the right of the address bar, or open the browser menu (⋮).
  2. Choose “Install One For All” or “Install page as app”: a shortcut is added to your desktop and your apps.

Download this tool’s engine?

This tool works entirely in your browser. To do that, it needs to download the items below from One For All, just once. They are then kept on this device, so next time the tool starts right away.

Your files are never sent anywhere.