Reduce PDF File Size in Linux: Tools and Methods

Covers multiple methods to reduce PDF file sizes on Linux. The primary approach uses Ghostscript with the -dPDFSETTINGS=/ebook preset, which typically achieves 40-60% size reduction. Also covers ps2pdf as a shorter Ghostscript wrapper, ImageMagick for image-only PDFs with direct DPI and quality control, cpdf -squeeze for lossless structural cleanup without touching image data, and GUI options via PDF Arranger and LibreOffice Draw. Includes diagnosing the root cause of large PDFs using pdfinfo and pdfimages, handling scanned PDFs with grayscale conversion, and a batch compression bash script for processing multiple files at once.