Compress images before adding them to the PDF
Reduce image resolution in the PDF
Remove unnecessary pages
Delete unused fonts
Embed only the fonts that are needed
Convert color images to grayscale if possible
Use PDF compression tools or software
Save the PDF with a smaller file size option
Flatten layers and transparency
Remove annotations, comments, and form fields
Optimize the PDF for web or email
Recreate the PDF from a lower-resolution source
Split large PDFs into smaller files
Use “Reduce File Size” or “Optimize PDF” features
Avoid scanning at very high DPI
Remove embedded media or attachments