PDF Image Quality Optimizer - Optimize PDF Images Online
Optimize image quality in a PDF with a granular quality slider from 10% to 100%. Re-encodes images at your chosen quality to shrink file size. Free, private, runs entirely in your browser.
Click to select a PDF file, or drag and drop
Your file never leaves your browserImage Quality: 60%
Smaller fileBetter quality
How to Optimize PDF Image Quality
- Upload the PDF you want to optimize.
- Use the slider to set the JPEG quality level from 10% (smallest) to 100% (original quality).
- Click Optimize Images to re-encode images at the chosen quality and download the result.
Example
Setting quality to 30% on a 10 MB PDF full of screenshots can shrink it to under 2 MB. The images will look slightly softer on close inspection but remain perfectly readable at normal zoom.
Common Use Cases
- Fine-tuning the trade-off between file size and visual quality for presentations.
- Reducing a large PDF to meet email attachment size limits.
- Optimizing PDFs for fast loading on a website or intranet.
FAQ
- What quality percentage should I choose? 40-60% is a good starting point for most documents. Text and vector elements are unaffected.
- Does this affect text sharpness? No — only raster images embedded in the PDF are re-encoded.
- Is my file uploaded anywhere? No — optimization runs entirely in your browser.