Oscar works with TIF format images, but PDFs work better. Here are some approaches to automating the conversion from TIF to PDF.
Windows:
Irfanview and the IMPDF plugin. Normally, there is a window that pops up when you save the converted PDF. In order to disable the pop up box, run through the conversion process once manually. When you File, Save (original folder), the Save window opens. Make sure that the Show options dialog at the bottom is on, so that the PDF Settings window will also be open. In the PDF Settings window, General tab, make sure that the Preview of PDF during save operation is set to ‘not needed’. Save the document.
Now you can use the following .BAT to automate the conversion without the pop-up.
rem tif2pdf.BAT
rem Uses IrfanView to convert TIFs to PDFs
rem from
@echo off
set Source=C:\temp\tif
for /F "tokens=* delims=" %%a in ('dir /ad /b /s "%Source%"') do call :Sub "%%a"
if exist "%Source%\*.tif" ("%ProgramFiles%\IrfanView\i_view32.exe" "%Source%\*.tif" /convert="%Source%\*.pdf")
goto :eof
:Sub
if exist "%~1\*.tif" ("%ProgramFiles%\IrfanView\i_view32.exe" "%~1\*.tif" /convert="%~1\*.pdf")
goto :eof
from: https://irfanview-forum.de/archive/index.php/t-890.html
Thanks Skippybox
If you are using hylafax on your linux server, you can add the following line to convert the incoming fax TIFs to PDFs.
tiff2pdf -o {destinationfile}.pdf {sourcefile}.tif