Convert PNG to JPG to Reduce PDF Size
Overview
PDFs with embedded PNG images are 3-10x larger than equivalent PDFs using JPG images at 85% quality. Before adding photos to a Word document you plan to export as PDF, convert them to JPG first. The resulting PDF will be significantly smaller without visible quality loss for standard photos.
How to Use This Tool
Convert your PNG images to JPG at 85% quality using this tool. Insert the JPG files into your Word or Google Docs document. Export to PDF. Compare the file size to the version with PNG images: it will be 50-80% smaller.
Ready to get started? It's free, no registration required, and your files never leave your device.
PDF Tool →Frequently Asked Questions
Why are PDFs with PNG images so large?
PNG is lossless; every pixel is stored without compression loss. A 4000x3000 PNG photo can be 10-30MB. When embedded in PDF, the file gets that large too. JPG at 85% quality stores the same photo in 1-3MB.
Should I ever use PNG in a PDF?
Yes, for logos, diagrams, and text-heavy graphics where lossless quality matters. For photographs and background images, JPG at 80-90% quality is a better choice.
Does converting PNG to JPG before inserting into Word/Docs affect quality?
At 85% quality, the difference is invisible for photos displayed at normal screen sizes. Word and Google Docs apply their own compression on export, so starting with an already-compressed JPG limits the total quality loss to one compression pass.