Image processing cheat sheet

In ImageMagick: convert save the result to a given (new) file mogrify is the same as convert but it performs processing inplace (the input files are overwritten) Strip metadata from jpg file: mogrify -strip f.jpg Rotate according the metadata, then strip: mogrify -auto-orient -strip f.jpg Find jpg and jpeg images, apply orientation from EXIF, remove metadata and resize to 1920 on the longest side preserving the aspect ratio and save to the same files:...

February 16, 2022 · SergeM

Combine images to PDF in linux

Using convert utility we can join multiple image files (png, jpeg, pdf) into one pdf. convert -density 250 file1.pdf file2.JPG file3.pdf -compress JPEG -quality 70 combined.pdf we use JPEG compression with quality =90 for images inside PDF. Otherwise the PDF will be too large. source For me images appear rotated inside the pdf. That’s probably because EXIF information about image rotation is not taken into account by pdf converter. You can remove all the meta information first with convert <input file> -strip <output file> and then combine it to a pdf....

May 3, 2017 · SergeM