Keyword Extractor Tool Online
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Extract the most important keywords and phrases from any text or webpage. See word frequency, keyword density, and top 1-word, 2-word, and 3-word phrases.
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How the Keyword Extractor Works
This tool uses statistical text analysis to identify the most important terms in your content. Here's the process:
- Input your content — paste text directly or enter a URL. For URLs, the tool fetches the page and strips HTML to get the visible text content.
- Tokenization — the text is broken into individual words and normalized (lowercased, punctuation removed).
- Stop word filtering — common words like "the", "is", "and" are filtered from single-keyword results. They're kept in multi-word phrases where they connect meaningful terms.
- N-gram extraction — the tool counts 1-word keywords, 2-word phrases, and 3-word phrases, calculating the frequency and density of each.
Why Keyword Extraction Matters for SEO
Understanding the keyword composition of your content — and your competitors' content — is fundamental to SEO and content strategy:
- Content audit — check whether your page actually focuses on the keywords you're targeting. Sometimes content drifts from its intended topic, and keyword extraction reveals the gap.
- Competitor analysis — extract keywords from top-ranking pages to understand what terms they emphasize. This reveals opportunities your content might be missing.
- Keyword stuffing detection — if one keyword has unusually high density (above 4-5%), it might trigger search engine quality filters. This tool helps you spot over-optimization.
- Content optimization — compare your keyword profile with competitor pages to identify terms you should mention more naturally — especially 2-word and 3-word phrases that signal topical depth.
- GEO readiness — AI search engines parse content at the passage level. Having clear, well-distributed keyword usage across sections makes your content easier for AI models to extract and cite.
Pair this tool with the Meta Tag Checker to ensure your title and description align with your content's actual keywords, and the Schema Markup Validator to verify your structured data supports the same topics. Use the Keyword Generator to expand from seed terms into 200+ keyword variations for content planning. For overall content depth, the Website Word Counter shows reading level and readability scores alongside word counts.
How to Use Keyword Extraction Results
Once you have your keyword data, here's how to put it to work:
- Check your primary keyword — is the keyword you're targeting actually in the top results? If not, your content may need to focus more clearly on the intended topic.
- Review 2-word and 3-word phrases — these are often the most valuable for SEO. Long-tail phrases like "technical SEO audit" or "website migration checklist" signal specific, high-intent topics.
- Compare with competitors — run the same extraction on pages that outrank you. Look for phrases they use that you don't — these are potential content gaps.
- Watch for over-optimization — if any single keyword exceeds 4-5% density, consider rephrasing some instances to use synonyms or related terms for a more natural reading experience.
- Align meta tags — your top keywords should appear in your title tag, meta description, and H1. Use the Meta Tag Checker to verify this alignment.
Keyword Extractor: FAQ
What does this keyword extractor do?
This tool analyzes text or a webpage and identifies the most frequently used words and phrases. It extracts single keywords (1-word), two-word phrases (bigrams), and three-word phrases (trigrams), along with their count and density percentage. This helps you understand the topical focus of any content.
What is keyword density?
Keyword density is the percentage of times a keyword appears relative to the total word count. For example, if a 1,000-word article mentions "SEO" 15 times, the keyword density for "SEO" is 1.5%. While there is no ideal density number, extremely high density can signal keyword stuffing to search engines.
How does the text mode work?
In text mode, the extraction happens entirely in your browser — nothing is sent to any server. You paste your text, and the tool tokenizes it, filters out common stop words (like "the", "is", "and"), and counts the frequency of remaining words and phrases. Results appear instantly.
How does the URL mode work?
In URL mode, the tool fetches the webpage, strips HTML tags, scripts, and navigation elements, then extracts the visible text content. It then applies the same keyword extraction algorithm as text mode. This is useful for analyzing competitor pages or auditing your own published content.
What are stop words and why are they filtered?
Stop words are common words like "the", "is", "and", "to", "of" that appear frequently in all text but carry little meaning on their own. Filtering them out lets the tool focus on the words that actually define the topic and meaning of the content. Stop words are still included in multi-word phrases when they connect meaningful terms.
What are 2-word and 3-word phrases?
These are multi-word keyword phrases (also called n-grams). Two-word phrases like "content marketing" or "page speed" and three-word phrases like "search engine optimization" or "core web vitals" often represent the most valuable SEO keywords because they capture specific topics better than single words.
Can I use this for competitor analysis?
Yes. Enter a competitor's URL and the tool will show you what keywords their page focuses on. Compare the results with your own content to identify gaps — terms they emphasize that you might be missing, or phrases you could target more effectively.
What is a good keyword density?
There is no magic number. Modern SEO focuses on natural language and topical relevance rather than hitting a specific density target. As a general guideline, a primary keyword appearing at 1-3% density is typical for well-written content. If density exceeds 4-5%, it may feel forced and could trigger keyword stuffing signals.
Is this keyword extractor free?
Yes. Completely free, no signup, no limits, and no ads. Text mode runs entirely in your browser — no data is sent to any server. URL mode fetches the page through our server but does not store any content.
Does this tool store my text or URLs?
No. Text mode processes everything locally in your browser. URL mode fetches the page in real-time and discards it after extraction. We do not store any text, URLs, or results.
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