Writing content without checking keyword density is like cooking without tasting — you won’t know if something is off until it’s too late. Search engines read your pages carefully. Use a keyword too little and Google won’t know what you’re writing about. Use it too much and you’ll get flagged for keyword stuffing, which can actively hurt your rankings.

This free keyword density checker lets you paste any text or enter a URL to instantly see how often every keyword appears — as single words, two-word phrases, and three-word combinations. No signup, no limits, no uploads to any server.

How to Use This Keyword Density Checker

Using the tool takes less than 30 seconds:

Option 1 — Check a URL: Enter any live webpage URL and click Fetch. The tool pulls the page content and fills the text box automatically. Then click Analyze.

Option 2 — Paste your content: Type or paste any draft, article, or blog post directly into the text box. Works even before you publish.

Once you click Analyze, you’ll see a keyword frequency table with density percentages, a color-coded status (Good / High / Too High), a visual bar chart of your top keywords, and key stats including total word count, unique words, sentence count, and estimated read time. You can also export the full results as a CSV file.

What is Keyword Density?

Keyword density is the percentage of times a specific word or phrase appears in your content compared to the total number of words on that page. The formula is simple:

(Number of keyword appearances ÷ Total word count) × 100 = Keyword Density %

For example, if a 1,000-word article mentions the word “SEO” 15 times, its keyword density is 1.5%.

This metric matters because it helps search engines like Google understand what topic your page is covering. It’s a signal — not the only one, but a useful one — that tells crawlers your content is relevant to a particular search query.

What is the Ideal Keyword Density for SEO?

There’s no single perfect percentage, and anyone who gives you a precise number is oversimplifying. That said, most SEO professionals agree on a general range:

1% to 2.5% is considered a healthy density for your primary keyword. At this level, the keyword appears naturally throughout the content without feeling forced or repetitive.

Below 0.5% and search engines may not pick up enough relevance signals. Above 3–4% and you risk triggering keyword stuffing filters, especially if the repetition feels unnatural to human readers.

For secondary keywords and long-tail phrases, aim even lower — around 0.25% to 0.5%. A 1,000-word article should mention secondary keywords about 2–3 times.

The most practical advice: read your content out loud. If a keyword sounds repetitive to your own ear, it will to Google too.

Keyword Stuffing — What It Is and Why You Should Avoid It

Keyword stuffing is the practice of cramming keywords into a page unnaturally — in body text, meta tags, alt attributes, or hidden areas — to manipulate search rankings. Google explicitly penalizes this behavior.

Signs of keyword stuffing include:

The same phrase appearing every other sentence
Content that sounds robotic or awkward to read
Lists of keywords that don’t form natural sentences
Invisible text or keyword-loaded alt tags added just for bots

Google’s algorithm assigns what it calls a “KeywordStuffingScore” to content. A score of 0 means no stuffing; 127 is the maximum. Pages that score high on this metric see their rankings depressed — sometimes significantly.

The fix is straightforward: use synonyms, vary your phrasing, and write for humans first. “Free online SEO tool”, “keyword analyzer”, and “content optimization checker” all signal relevance for similar searches without repeating the same phrase.

Why Check 2-Word and 3-Word Phrases?

Most keyword density tools only analyze single words. That misses a huge part of how people actually search.

Search queries like “keyword density checker”, “free SEO tools”, and “check keyword stuffing” are two and three-word phrases. These long-tail queries typically have lower competition and higher conversion intent than single words.

Analyzing bigrams (2-word) and trigrams (3-word) alongside individual words gives you a much clearer picture of how your content reads from a search engine’s perspective. Our tool lets you switch between 1, 2, and 3-word analysis with a single click.

How to Use This Tool to Check a Competitor’s Page

One of the most underused features of any keyword density tool is competitor analysis.

Enter a competitor’s URL, fetch their content, and run the analysis. You’ll immediately see which keywords they emphasize most heavily — their focus terms, supporting phrases, and the rough density range they’re working within for topics similar to yours.

This gives you a baseline. If you’re writing about the same subject and your keyword appears at 0.3% while competitors average 1.5%, that’s a clear gap in relevance signaling.

When Should You Check Keyword Density?

Before publishing — Paste your draft and check for unintentional over-optimization. It’s easy to use a phrase repeatedly without noticing.

During content audits — Run older pages through the tool. Content written without SEO awareness often has either very low or inconsistently high density for target keywords.

After editing — Every edit changes your word count and keyword distribution. Re-check after significant revisions.

When analyzing competitors — Enter competitor URLs to benchmark keyword usage across your niche before writing new content.

Frequently Asked Questions (FAQ)

For most blog posts, keeping your primary keyword between 1% and 2% works well. That means if you write a 1,000-word article, your main keyword should appear roughly 10 to 20 times — naturally spread across headings, the introduction, body paragraphs, and conclusion. Going above 3% starts to feel repetitive and risks keyword stuffing penalties from Google. For secondary keywords and long-tail phrases, a density of 0.25% to 0.5% is more appropriate. The most reliable test is to read your content out loud — if a word sounds repeated, reduce it.

Simply enter the page URL into the input field above and click Fetch. The tool retrieves the page content through a proxy and automatically populates the text area. Click Analyze to see the full keyword frequency report. Everything runs in your browser — no software download, no account, no file uploads. Works on desktop and mobile.

Keyword stuffing is when a keyword appears so frequently in your content that it disrupts natural reading flow and exists primarily to manipulate search rankings. Google penalizes pages that do this. Our tool flags any keyword with a density above 3% as “Too High” in red, and keywords between 2.5–4% as “High” in yellow. If you see red on your primary keyword, replace some occurrences with synonyms or related phrases. If you’re a WordPress blogger or content writer, checking every piece before publishing is a good habit.

For a 1,000-word article, your main keyword should appear roughly 10 to 15 times for a density of 1% to 1.5%. Secondary keywords can appear 2 to 5 times each. These aren’t strict rules — the goal is natural, readable content that clearly covers the topic. Use our 2-word and 3-word phrase analysis options to check long-tail keyword usage alongside single words.

Yes. This tool is completely free with no account required. Paste any text or enter any URL and get full keyword frequency results instantly. There are no daily limits, no file size restrictions, and no watermarks on exports. The CSV export feature is also free.

Keyword frequency is the raw count of how many times a word appears in a piece of content — for example, “SEO appears 12 times.” Keyword density is that count expressed as a percentage of total words — “SEO has a density of 1.2% in a 1,000-word article.” Frequency tells you the absolute number; density tells you the proportion. Both are shown in our results table.

Copy your post content from the WordPress editor (Ctrl+A, Ctrl+C), paste it into the text area of this tool, and click Analyze. You’ll see instant results without needing to publish the post first. This is especially useful for checking drafts, imported content, or pages being updated during a content audit.