SEO Content and Keyword Analyzer

Get a content and keyword analysis using SEO to create the best content.

The first keyword will be considered the main one.

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Keyword Density & Content SEO Analyzer

Improve your search engine rankings with smart keyword analysis, frequent phrases, and readability checks.

How to use the Keyword Density Analyzer to improve your SEO

Our free keyword density analysis tool allows you to audit your content in real time to ensure it is perfectly optimized for search engines without overdoing it.

N-Grams Analysis (Bigrams and Trigrams)

Don't limit yourself to single words. Our tool identifies the most frequent two and three-word combinations, helping you detect semantic themes and long-tail keyword opportunities.

Flesch-Kincaid Readability Score

Good SEO isn't just for robots, it's for humans. We analyze the complexity of your text to ensure it's easy to digest, improving dwell time and reducing bounce rate.

On-Page SEO Checklist

Instantly check if you've included your main keyword in the first paragraph and if the total length of your text is sufficient to be considered valuable content by Google.


Frequently Asked Questions (FAQ)

What is keyword density?

Keyword density is the percentage of times a keyword appears in relation to the total number of words in a text. Keeping it between 1% and 2% is a good SEO practice.

What are bigrams and trigrams?

They help understand the semantic context of a text by identifying recurring phrases that could be secondary or long-tail keywords.

What is the ideal article length for SEO?

While it depends on the topic, a minimum of 300 words is recommended for Google to consider it useful content, though articles over 800-1000 words often rank better for complex topics.

SEO Dictionary and Semantic Concepts

LSI (Latent Semantic Indexing)
Semantically related keywords that help search engines understand the context without repeating the main keyword.
TF-IDF
Metric that evaluates the importance of a word in a document relative to a collection of documents.
Keyword Stuffing
Penalized practice of saturating a text with keywords to try to manipulate rankings.
Stop Words
Common words (the, of, a) that are usually filtered out in analysis to focus on concepts with meaning.

Technical Optimization FAQs

Is it safe to paste my articles here?

Absolutely. Uselium processes your text locally in your browser. Your drafts and content strategies never reach our servers, guaranteeing total privacy.

What is the ideal density?

While there is no exact figure, staying between 1% and 2% for the main keyword is usually safest to avoid penalties and maintain naturalness.

Comparativa de Servicio

FeatureUselium (Private/Local)Others (Cloud/Tracking)
PrivacyMaximum (Local Processing)Texts sent to the cloud
AnalyticsBigrams and Trigramas includedOften only single words
FocusSearch intent and ReadabilityOnly statistical counting