Keyword Extractor & Frequency Analyzer

How the Keyword Extractor Works

The report keeps measurement separate from interpretation:

1. Choose text or URL. Text is processed locally. URL mode fetches public HTML and separates title, meta description, H1 evidence, and cleaned body text.
2. Segment Unicode words. Modern browser and server segmentation preserves diacritics and supports many writing systems; a Unicode-regex fallback is used when needed.
3. Apply an explicit stop-word rule. Auto mode supports English, Lithuanian, Spanish, German, and French and falls back to removing nothing when evidence is uncertain.
4. Count within sentence boundaries. One-, two-, and three-word strings are normalized and counted without building phrases across line or sentence breaks.
5. Show evidence. Every row includes exact frequency, density, detected source zones, and a first-occurrence context snippet.

What Keyword Frequency Can—and Cannot—Tell You

Frequency is useful evidence about a document, but it is not a verdict about SEO value:

• Focus review, compare recurring language with the page's intended subject and audience.
• Repetition review, inspect context when a word or phrase appears unusually often; there is no universal “safe” density.
• Page-element alignment, use source badges to see whether language appears in the title, H1, description, or only the body.
• Comparable-page analysis, compare like-for-like pages, then investigate meaningful differences instead of copying a competitor's wording.
• Research boundary, frequency provides no search volume, difficulty, ranking, traffic, conversion, or semantic-quality data.

Use the Meta Tag Checker for a dedicated metadata review and the Website Word Counter for readability and length. If you need new seed variations rather than terms already present in a sample, use the separate Keyword Generator.

How to Use Extracted Keywords

Start with the evidence in each row, then make an editorial decision:

• Use 1+ for discovery, especially on short copy. Switch to 2+ or higher when you specifically want repeated language.
• Read the snippet, because the same string can be a core topic, navigation residue, a disclaimer, or an incidental mention.
• Check source zones, but do not force a phrase into every element. Titles, descriptions, headings, and body copy have different jobs.
• Export a reproducible view, using the same phrase-length, frequency, and row settings when comparing pages.
• Validate outside this report, with search-demand, intent, SERP, customer, and subject-matter evidence before changing content.

For a complete workflow, follow our keyword research guide. It explains the research steps that a document-frequency analyzer cannot perform.