コーパス Corpus Analysis

Estimated difficulty score (0-100) based on vocabulary and grammar complexity

Sentences with highest estimated difficulty

How rare or common your vocabulary is

Uncommon or specialized vocabulary in your text

Most frequently detected grammar constructions

Visual highlighting of your text by detected grammar patterns

How much you'd understand by learning the most common words first

How varied and rich your vocabulary usage is

Type-Token Ratio

–

Higher = more variety

Moving Average TTR

–

Smoothed diversity score

JLPT level breakdown for each document in your corpus

Share of character types across the entire corpus

JLPT Distribution

OOV Rate

Grammar Density

Detected patterns per 100 sentences

JLPT mix for planning level-appropriate content

Share across frequency bands (TOP 1k/5k/10k…)

Detected grammar patterns per 100 sentences

–

Total patterns: –

Sentence length and lexical density

Avg Sent Len

–

Lexical Density

–

New vs known unique words

–

Known: –

Type richness and known-coverage

Types per 1k

–

Known Coverage

–

Clauses per sentence and polite style ratio

Clause Density

–

Polite Forms

–

Share of tokens containing kanji

–

Download a CSV snapshot of these metrics