Most of the time when you want to compare 2 text files, you might get used to using the command
diff old.tex new.tex
in terminal. Recently, I just found a program to do the job beautifully and, most importantly, FREE. Try ExamDiff, it works pretty well for me.
The command pdflatex can take only figures with .pdf extension, and unfortunately I mostly output my figures in .eps, which means that I have to convert all figures to .pdf. If there are only a handful of figures, manually converting the figures one by one is acceptable using the command (in the terminal)
However, when there are hundreds of figures, we may not want to do that. Instead, one might want to simply write a batch file to convert all the figures automatically. Instructions for writing a batch file can be found in this web page:
I have my very easy code available to try here. For an advanced user, you can list all the file names inside a directory and use for-loop to convert the file one by one. There are some people suggest using ImageMagick, but I found that is not so convenient :-P.