A 40-slide PowerPoint exported as PDF often weighs 30 MB because each slide holds full-size images. That file is too big for email attachments or uploads. Use GekiPDF's compress-pdf tool to rewrite the PDF with Ghostscript presets that downsample images while keeping text crisp.
Choose Light (~200 DPI) for print quality, Recommended (~150 DPI) for most screens, or Extreme (~96-120 DPI) for web sharing. The process takes about 1 second for a 16-page scan; a typical deck finishes in a few seconds. Files are deleted after one hour, and you get up to 40 conversions per hour.
Frequently asked questions
Will compressing remove the text layer?
No. The tool rewrites the PDF and keeps the text layer intact, so you can still search and copy text. Only image resolution is reduced.
What file size limit applies?
You can upload files up to 50 MB. If your deck is larger, split it first using the split-pdf tool, then compress each part.
Can I choose how much compression to apply?
Yes. Pick between three presets: Light (200 DPI), Recommended (150 DPI), or Extreme (96-120 DPI). Lower DPI means smaller file size but softer images.
Do it in the full tool
Open Compress PDF for all options, or jump straight to another step below.
Related tools
- How to compress a PDF to 100 KB
- Compress a PDF to 200 KB (free, online)
- Compress a PDF to 500 KB
- How to compress a scanned PDF (without blurring it)
- Reduce PDF size for email (25 MB and 10 MB limits)
- Compress PDF for WhatsApp
- Split PDF
- PDF to JPG
- Merge PDF
- Merge PDFs without watermark (free)
- Merge PDF online free — no install, no account
- Convert PDF to editable Word (keep tables and images)
- PDF to JPG at high quality (300 DPI)