Content Quality Score
How TextScore measures sentence variety, vocabulary richness, and structural coherence to produce your quality rating.
Quality is not just about what you say. It is about how you build it. TextScore evaluates three dimensions of writing quality: how varied your sentences are, how rich your vocabulary is, and how well your ideas connect. These three dimensions combine into a single composite score.
Sentence Variety
What It Measures
Sentence variety tracks how much your sentence lengths differ from each other. If every sentence is 15 words, your writing feels robotic. If they range from 5 to 25 words, your writing has rhythm.
How It Works
TextScore calculates the standard deviation of sentence lengths across your text. A higher deviation means more variety. It also checks sentence openings - starting every sentence with "The" or "I" is a common weakness that this metric catches.
- High variety: Mix of short punchy sentences and longer explanatory ones. Different opening words. Questions mixed with statements.
- Low variety: Same sentence length repeated. Same opening word pattern. All statements, no questions or fragments.
Example
Low Variety
"The tool checks your text. The system finds problems. The report shows results. The user fixes issues. The content gets better."
High Variety
"Run your text through the tool. It finds problems fast. What do you do with the results? Fix the issues it flags, starting with the red ones. Your content improves with each pass."
Vocabulary Richness
What It Measures
Vocabulary richness is the ratio of unique words to total words. Also called the type-token ratio (TTR). A text with 100 words where 70 are unique has a TTR of 0.70. Higher ratios mean you are not repeating yourself.
Why It Matters
Repetitive vocabulary signals low-effort content. Readers notice when the same word appears in every sentence, even if they cannot name what feels wrong. Platform algorithms also score content quality partly based on lexical diversity.
- High richness (0.65+): Good variety of word choices. Synonyms used naturally.
- Medium richness (0.50-0.64): Some repetition. Could benefit from synonym swaps.
- Low richness (below 0.50): Heavy repetition. The same words appear over and over.
A Note on Short Text
TTR naturally decreases as text gets longer because common words (the, is, and) repeat more often. TextScore adjusts for this. A 50-word tweet and a 2,000-word article are measured on different scales.
Structural Coherence
What It Measures
Coherence checks whether your sentences connect logically. Does each sentence follow from the one before it? Do your paragraphs build on each other? Or does your text read like a list of unrelated thoughts?
Signals TextScore Checks
- Transition words: "However," "therefore," "for example," "in contrast" - these signal logical connections.
- Pronoun references: "It," "they," "this" - these tie sentences to previous ones.
- Topic consistency: Key terms appearing across multiple sentences signal a focused argument.
- Paragraph structure: Opening sentences that set up what follows, closing sentences that wrap up the point.
The Composite Score
Your content quality score blends all three dimensions. Each one contributes equally. You can have strong vocabulary but weak coherence, or great sentence variety but repetitive word choices. The composite score shows the overall picture.
- Good (Green): Strong across all three dimensions. Your writing reads well and holds attention.
- Fair (Yellow): One or two dimensions need work. Check which sub-score is pulling you down.
- Poor (Red): Multiple dimensions are weak. Focus on variety and vocabulary first - coherence often improves as a side effect.