InkTrace - Writing Process Analyzer

Replay Google Docs revision history, analyze writing behavior and originality

InkTrace is a writing process analysis tool built by a Chinese language teacher for educators. Far more than a revision history player, it provides a complete analytical toolkit for understanding how students write. ▶ Full Chinese-English bilingual support — one of the very few tools optimized for Chinese (CJK) writing analysis. KEY FEATURES ◆ Writing Playback — Replay every edit like a movie. Play, pause, fast-forward (1x–200x), and jump to any point. ◆ 5 Behavioral Indicators — Paste ratio, speed variance, pause naturalness, non-linear editing, and deletion rate. Each displayed with intuitive color-coded bars. ◆ Smart Paste Detection — Automatically distinguishes external pastes (content from outside the document) from internal reorganization (copy-move within the document). Won't flag normal paragraph rearrangement as plagiarism. ◆ Character Growth Chart — Line chart showing word count over time with incremental change bars. ◆ Writing Session Timeline — Auto-detects writing sessions, showing duration and word count changes. Easily spot last-minute cramming. ◆ Multi-Author Analysis — For collaborative documents, calculates each contributor's share. ◆ Writing Originality Assessment — Level-based indicator (Natural / Suggest Review / Recommend Investigation) based on behavioral metrics. No misleading percentages. ◆ Copy AI Prompt — One-click generates a comprehensive analysis prompt with all key data. Paste it into ChatGPT, Claude, DeepSeek, or any AI tool you prefer. No AI vendor lock-in. OPTIMIZED FOR CHINESE ▸ Accurate CJK character counting ▸ Bilingual Chinese/English interface ▸ Metrics tuned for both Chinese and English writing ▸ UI inspired by Chinese calligraphy aesthetics BUILT BY A TEACHER Designed by a Chinese language teacher at an international school who understands the real challenges educators face — from verifying writing originality to understanding collaborative contributions. FREE & PRIVATE ▸ 100% free — no trials, no paywalls, no document limits ▸ All analysis runs locally in your browser ▸ No document data is ever sent to external servers ▸ No personal data collected