Math OCR
Effortlessly extract complex calculus and physics formulas from screenshots. Export LaTeX code and editable Word formulas in seconds—no install required. The fast, free alternative to Mathpix.
Core use cases
Study & wrong-question notebook organization
Manually typing complex integrals, limits and fractions when organizing math notes takes forever.
Capture screenshots of questions and upload them, then paste straight into Word, MarginNote or Notion to build clean, organized study materials.
Academic research & LaTeX paper writing
Retyping large matrices and multi-line equations from PDF papers into LaTeX is tedious and error-prone.
Upload screenshots to generate standard LaTeX source in seconds, then copy into Overleaf or your LaTeX editor to speed up paper writing.
Teacher lesson planning & exam paper editing
Formulas inside scanned test papers or images cannot be edited directly.
Batch OCR formulas and text from scanned images into standard Word documents for seamless secondary editing and formatting.
Frequently asked questions
What types of math formulas can imgdoc.cn recognize?
A high-precision OCR engine handles complex formulas across higher mathematics, linear algebra, probability theory and high-school math and science, including integral signs (∫), summation (∑), matrices, fractions, square roots, Greek letters and handwritten equations.
How do I insert the extracted formulas into Microsoft Word for editing?
You can export directly in the native Word formula format (OMML). After conversion, copy the result and paste it into Word; it becomes a native, editable Word math object whose parameters and fonts you can adjust.
Why is imgdoc.cn a great free alternative to Mathpix?
Mathpix imposes strict limits on free usage. We offer students, teachers and researchers a free, convenient web-based formula extraction service—no client download needed; just open the browser to convert images to LaTeX and Word formulas.
Do I need to log in, and are my uploaded screenshots safe?
No login is required—open the page and start using it. Precise formula OCR comes with a free daily quota that resets the next day. All uploaded screenshots and converted files are encrypted and permanently deleted on a schedule after processing; we do not keep private documents.