1. Latex equation to picture

https://www.sciweavers.org/free-online-latex-equation-editor

2. Online paper citation graph

https://www.connectedpapers.com

3. Code to picture

https://carbon.now.sh/

4. Latex Mathematical Symbols

https://www.cmor-faculty.rice.edu/~heinken/latex/symbols.pdf

5. CORE Rankings

https://www.core.edu.au/conference-portal

6. Matrix Calculus

https://www.matrixcalculus.org/

7. Paper Explainer

https://www.explainpaper.com/dashboard

8. Wolfram|Alpha

https://www.wolframalpha.com/

9. Mycolor (A useful website to find matched colors)

https://mycolor.space/

10. BibTeX Tidy

https://flamingtempura.github.io/bibtex-tidy/index.html