Compress images in the PDF
Reduce image resolution
Convert images to grayscale
Remove unnecessary pages
Delete unused objects and metadata
Flatten annotations and form fields
Optimize fonts and embed only needed subsets
Use PDF compression tools
Save as a reduced-size PDF
Recreate the PDF with lower-quality settings
Remove embedded attachments
Use online PDF compressors
Use desktop PDF editor compression options
Print to PDF with smaller file settings
Split large PDFs into smaller files