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Handwritten Formulas, PDF Instant Recognition: Liii STEM v2025.2.3 Released! ​

🎉 We are proud to announce the official release of Liii STEM v2025.2.3, a modern editor designed for scientific and engineering creation.

The new version features significant improvements in stability and performance. Welcome to download and experience it.

Liii STEM Official Website: https://liiistem.cn/

⭐️ New Features and Highlights ​

  1. Math OCR
  2. Smart Paste and Selective Paste
  3. More Modern Search and Replace (Supports Formulas!)
  4. New Dark Mode
  5. New Annotation Feature

🎓 What is Liii STEM ​

Liii STEM is an intelligent writing and typesetting tool specifically designed for STEM (Science, Technology, Engineering, and Mathematics) fields. It integrates powerful formula editing, automatic typesetting, AI assistance, and visual recognition features. Whether for lesson preparation, lecture note writing, or student classroom note-taking, it significantly improves efficiency.

  • World's Fastest Math Input Method: WYSIWYG (What You See Is What You Get), no coding required, efficiency hundreds of times faster than LaTeX\LaTeX, providing numerous easy-to-remember formula input methods. Math Formula Quick Editing
  • One-Click Typesetting, Standard and Beautiful: Built-in multiple AI models (DeepSeek V3.2, DeepSeek R1, Kimi-K2-Instruct), just input your desired content, Liii STEM automatically generates structured, academically compliant lecture notes and notes, no more headaches with typesetting. AI Automatic Typesetting
  • Magic Paste: Copy content from ChatGPT, DeepSeek, Zhihu, etc., automatically formatted, eliminating typesetting hassles. Magic Paste and Smart Paste
  • Code Block Insertion: Supports inserting static and runnable code blocks, allowing you to run code directly within documents. Code Block Insertion
  • World's Most Convenient Math OCR: Just screenshot + Ctrl + V / Command + V

🖥 Math OCR (Free to Use with Registration) ​

Math OCR: Screenshot + Ctrl + V / Command + V

World's Most Convenient Math OCR, just two steps to automatically convert Math OCR to formulas, no more copying and pasting back and forth

  • Recognize PDF Formulas as Liii STEM Format

  • Recognize Handwritten Formulas as Liii STEM Format

🔧 Smart Paste and Selective Paste ​

Smart Paste: Ctrl + Shift + V / Command + Shift + V ​

Automatically detects the format in the clipboard and adapts to the current document insertion

  • In Text Mode: Smart Paste automatically calls OCR to convert images to Liii STEM format

  • In Math Mode: Smart Paste automatically converts LaTeX code and pastes it as Liii STEM format

Selective Paste: Ctrl + Alt + V / Command + Option + V ​

You can also choose the format you want to paste through Selective Paste, supporting pasting as Markdown, LaTeX, HTML, and various other formats

🔍 More Modern Search and Replace ​

The world's best document search and replace functionality, not just text search, but formulas, symbols, matrices can all be searched. For more detailed tutorials, see Structured Search and Replace

🎨 Interface and Editor ​

New Annotation Feature ​

Added "Annotation" to the Menu Bar, allowing you to add collapsed annotations and expanded annotations to documents. Not just text annotations, but formulas, symbols, matrices can all be used as annotation content

Both Interface and Documents Support Dark Mode ​

Both interface and documents support dark mode for better viewing experience.

Typesetting Engine Optimization: Chinese Punctuation Compression ​

💡 Other Updates ​

  1. Added mathcal (script), mathbf (bold), and mathfrak (fraktur) related mathematical font Tab Cycling input methods (press tab after typing two uppercase letters). Added new Tab cycle variant ∇\nabla for lowercase letter n (By request from Tsinghua University Mogan Community)

  1. Image Hover Menu, now you can quickly adjust image layout and perform OCR recognition through the hover menu

  1. Non-breaking space (nbsp) now uses invisible color by default, can be adjusted

🌟 Summary ​

Liii STEM v2025.2.3 brings a series of intelligent and efficient feature updates, including the world's most convenient Math OCR functionality, making academic creation easier and more convenient. From optimization of mathematical formula input to enhancement of file export and format support, every feature aims to improve user experience, helping you achieve twice the results with half the effort in academic writing.

👏 Join Us ​

Scan the QR code to join the Mogan community QQ group or join the Discord group to connect with like-minded individuals online and get the latest news about Liii STEM.