Question

I am wondering whether anyone knows a easy way to convert a latex math formula to a big jpeg file?

Here is the latex math formula:

\[
\lim_{u\rightarrow 0_+} \int_0^u \ud s \int_{-\infty}^\infty
\frac{f(u-s,x-y)}{\sqrt{2\pi
s}} \exp\left\{-\frac{y^2}{2s}\right\} \ud y
\]

Thanks!

Answer 1

This isn’t really programming related at all, but here’s a way to do this:

• Use the class standalone in your LaTeX source file. This will produce a document that is exactly as large as needed, and no larger.
• Produce a PDF file using pdflatex …
• Convert to JPEG using convert (from ImageMagick).

Minimal example:

\documentclass{standalone}

\begin{document}
\[
\sum_{i=1}^n i
\]
\end{document}

convert with appropriate resolution:

convert -density 400 file.pdf -scale 2000x1000 file.jpg

Caveat: standalone has some issues determining the size of the document. I don’t actually like the results it produces. You may require loading the geometry package and setting the document dimensions manually. This requires a bit of fiddling but the results are much better.