Why Document Image Quality Matters
Poorly optimized images are the #1 cause of bloated document files. A Word document with uncompressed photos can balloon from 500KB to 50MB, causing email issues, slow loading, and storage problems.
On the other hand, over-compressed images look blurry and unprofessional. The key is finding the right balance – crisp, clear images that don't compromise document portability.
Document Image Best Practices
- Match Resolution to Use: 300 DPI for print, 150 DPI for screen-only documents, 72 DPI for web uploads.
- Compress Before Inserting: Always optimize images before adding them to documents, not after.
- Use the Right Format: JPEG for photos, PNG for diagrams and text-heavy graphics.
- Clean Up Scans: Increase contrast and remove gray backgrounds for professional-looking document scans.
Recommended Image Settings by Document Type
PDF (Print)
300 DPI
Format: JPG/PNG
PDF (Web)
150 DPI
Format: JPG
PowerPoint
1920x1080px
Format: JPG/PNG
Word/Google Docs
150-300 DPI
Format: JPG/PNG
Document Image FAQ
How do I reduce image file size in Word documents?
Before inserting images into Word, compress them using our tool. Aim for 150-200 DPI for screen viewing or 300 DPI for print. This keeps file sizes manageable while maintaining quality.
What resolution should document scans be?
For text documents, 300 DPI (dots per inch) is the standard for readable text. Photos or graphics in documents should also be 300 DPI for print or 150 DPI for screen-only viewing.
How can I clean up a document scan?
Use our enhancement tools to increase contrast (making text blacker and paper whiter), adjust brightness to remove gray backgrounds, and sharpen text for clearer readability.
What image format works best in PDFs?
JPEG works well for photos in PDFs (smaller file size). PNG is better for diagrams, charts, or images with text (maintains sharp edges). Most PDF tools handle both formats well.
How do I optimize images for PowerPoint?
PowerPoint displays at 96 DPI on screen. For full-slide images, 1920x1080 pixels is ideal. Compress images before inserting to keep presentation files small and prevent lag.