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Anyone who works with LaTeX knows how time-consuming it can be to find a symbol in symbols-a4.pdf that you just can't memorize. DeTeXify is an attempt to simplify this search. Just draw the symbol you are looking for into the square area above and look what happens!
Philipp Kuhl and Daniel Kirsch. DeTeXify LaTeX handwritten symbol recognition. http://detexify.kirelabs.org/classify.html.
MathPix
Extract equations from PDFs or handwritten notes in seconds just by taking a screenshot. Paste the resulting LaTeX code into any Markdown or LaTeX editor. Download Snip and start saving time.