Use a PDF compressor tool
Reduce image resolution
Compress images before adding them to the PDF
Remove unnecessary pages
Delete unused fonts
Embed only required fonts
Flatten annotations and form fields
Optimize PDF for web or screen
Save as a reduced-size PDF
Convert color images to grayscale
Remove embedded media files
Lower scan quality when creating the PDF
Recreate the PDF with smaller source files
Use “Print to PDF” with lower quality settings
Split large PDFs into smaller files