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Jun 19, 2015 · One easy way is that you try the software ScanTailor (scantailor.org) sudo apt-get install scantailor. It takes you through 6 steps to optimize your photos. At the last step you can select the option "Equalize illumination" this will give you a nice clean look! Personally I usually just use GIMP.
Using a terminal where the PDF is located: For the full document: convert -density 150 input.pdf -quality 90 output.png For a single page: convert -density 150 input.pdf[666] -quality 90 output.png Whereby: PNG, JPG or (virtually) any other image format can be chosen.-density xxx will set the DPI to xxx (common are 150 and 300).
Aug 23, 2019 · So as an alternative you can run the following commands in a terminal while being in the folder where the jpg files are. ls *.jpg | xargs -I% img2pdf -o %.pdf %. This converts each image to a single page pdf, one by one, without overloading the system. Then: pdfunite *.pdf output.pdf && rm *.jpg.pdf.
19. You could take a look at PDF Utilities (poppler-utils via Synaptic or apt-get) which includes pdftotext: Poppler is a PDF rendering library based on Xpdf PDF viewer. Of course, success will depend on how the pdf file was generated. If you get what you want as a text file, you could then save that as an .odt file.
Oct 16, 2023 · 231. If you have a pdf with scanned images, you can use convert (ImageMagick) to create a pdf with jpeg compression (You can use this method on any pdf, but you'll loose all text informations). For example: convert -density 200x200 -quality 60 -compress jpeg input.pdf output.pdf. Adjust the parameters to your needs.
Nov 29, 2018 · Use LO Impress' Photo Album feature: New Presentation -> Insert -> Media -> Photo Album. There, you can select multiple images to insert. If you're done, just export as PDF. Share. Improve this answer. edited Jul 7, 2017 at 14:44. answered Jul 7, 2017 at 12:39. tohuwawohu. 7,392 5 29 35.
May 28, 2015 · If the PDF file consists entirely of image data; pdftk inputFile.pdf burst mogrify -density 300 -format jpg -quality 20 pg_*.pdf convert *.jpg -auto-orient outputFile.pdf The density value can match the density of the source image (eg 300 dpi), but the jpeg quality should be lower than the source image (e.g. 20).
1. Open in the gimp, import pdf at 300dpi, go image > mode > indexed, and select 1 bit (black/white), save as tiff with no compression. Once you have a tiff that is essentially the image as a raster format in binary, and you can open in a raster processing program / image library of your favourite language or convert it to an ascii grid using ...
Dec 4, 2021 · Step 1: Image >> Mode >> Grayscale. Step 2: Image >> Mode >> Indexed >> Generate optimum palette (Here you will find 256 numbers of colors) >> change the Maximum number of colors to 10 or any other value that suits your file size. Step 3: If you want to reduce the file size further. Than you can opt for this step.
Nov 24, 2011 · 0. It seems that the easiest way is using Acrobat Pro. Open the PDf in Acrobat Pro. Once the file is opened, go to File → Export → Image → JPEG, it will export each page as a single JPG. Place all the JPGs in a folder. Zip the folder. Manually change the extension at the end of the zipped file from .zip to .cbz.
