Keyword Density Analyzer
Calculate single and two-word keyword density percentages in articles.
Keyword Density Analyzer
About Keyword Density Analyzer
The Keyword Density & N-Gram Frequency Analyzer calculates single-word, 2-word, 3-word, and 4-word phrase frequencies and density percentages ($D = \frac{K}{T} \times 100$) with stop-word filtering to prevent keyword stuffing penalties.
How to Use Keyword Density Analyzer
Step 1
Paste your content into the editor.
Step 2
Toggle stop-word filtering and select N-Gram phrase length (1 to 4 words).
Step 3
Inspect the sorted keyword frequency and density percentage table.
Step 4
Adjust copy if any keyword exceeds recommended 3% density limits.
Practical Use Cases for Keyword Density Analyzer
Keyword Density & Over-Optimization Auditing
Audit content to ensure primary target keywords remain within safe, natural density ranges (1% to 2.5%) without triggering Google keyword stuffing penalties.
Long-Tail Phrase & N-Gram Discovery
Identify the most frequently repeated 2-word, 3-word, and 4-word keyword combinations in competitor content.
Input & Output Examples
Analyzing 2-Gram Keyword Frequencies
Pasted article about "developer tools"
Top 2-Grams: "developer tools" (14 occurrences, 1.8% density), "web apps" (8 occurrences, 1.0% density)
Key Features & Performance
- ✓Computes 1-gram (single words), 2-gram, 3-gram, and 4-gram phrase frequencies.
- ✓Calculates exact density percentages with safe threshold indicators (Optimal: 1–2.5%, Warning: > 3.5%).
- ✓Built-in stop word filter (ignores "the", "and", "is", "in") across English, Spanish, French, and German.
- ✓100% Client-Side memory execution guarantees content privacy.
- ✓1-Click Copy density tables and CSV export.
Key Terminology & Definitions
Keyword Density Percentage ($D$)
The percentage of times a keyword or phrase appears in a text relative to the total word count ($D = (K / T) \times 100$).
N-Gram
A contiguous sequence of $N$ items from a given sample of text (e.g. 1-gram = "tool", 2-gram = "developer tool", 3-gram = "online developer tool").