Oversized PDFs can slow down sharing and storage. Here are beginner-friendly solutions:
1. Downscale Image Quality
High-resolution images account for 90% of PDF bloat. Reduce images to 150-200 DPI via editors like GIMP or Preview.
2. Remove Unused Elements
Delete bookmarks, annotations, or embedded fonts using Adobe Acrobat's "Optimize PDF" tool.
3. Enable Monochrome Mode
Switch to grayscale in print settings (File > Print > Color > Black & White) for text-heavy files.
4. Split Multi-Page PDFs
Divide large documents into sections using free tools like PDFsam Basic.
5. Leverage Online Compression
Cloud-based tools like PDFSail use machine learning to shrink files by up to 80% without quality loss.
Recommended Tool: PDFSail
Compress PDFs in one click, 256-bit encryption, no watermarks.