Legacy ImageMagick Discussions Archive

Hey,

I'm having a problem of converting multiple TIF files into a single PDF. The files were produced in Scantailor, they are about 200 kB on average, but their resolution is huge (9032 x 13476). There's about 50 of them and it's monochrome text only. I'm running Arch Linux and ImageMagick 7.0.8-10.

I guess that the program tries to convert them somehow like they would be full color or something, and I'm running into out of memory/cache problems. Not to mention it takes way too long to convert even single page. I just want to merge the files into PDF without any compression. I tried "-compress None" and "Group4" (that's what I use on Windows), also tried suggestion from this thread: viewtopic.php?t=32431 (-monochrome -type bilevel). Is it possible or will I be forced to launch Windows just to make a PDF from those files? No matter what I do, my ram and cache fills almost instantly. I tried tiff2pdf, but that doesn't support multiple files (and merging those with imagemagick isn't possible due to memory problem). Doing such things in Windows using Irfanview multipage tiff -> pdf was always a matter of seconds.

IM is a general-purpose raster image processor. It reads all the images into memory before doing any processing, which is overkill for your needs.

I suggest you convert each tiff to pdf using tiff2pdf or IM, then use pdfunite on all the pdf files.

Thank you for clarifying, going to try it the way you suggested. I probably should've known it's not designed to this specific task, so sorry about that.