Print quality is measured in DPI (dots per inch). Screen images are typically 72 DPI — far too low for printing. Professional print quality requires 300 DPI. Here is how to increase your photo's resolution for printing without buying Photoshop.
Understanding DPI and Print Quality
| DPI | Quality | Best For |
|---|---|---|
| 72 DPI | Screen only | Web, social media |
| 150 DPI | Good print quality | Large posters, canvas |
| 300 DPI | Professional quality | Photos, books, brochures |
| 600 DPI | Exceptional quality | Fine art, magazine printing |
How to Increase Photo Resolution for Printing
Visit imgresizr.com and upload your photo. Open the Resize tool. Enter the pixel dimensions that correspond to your desired print size at 300 DPI — use the table in the "Enlarge Photo for Framing" guide for reference. The Enlarge tool uses intelligent upscaling to add interpolated detail rather than just stretching pixels. After upscaling, apply the Sharpen filter to recover edge crispness. Export as JPG at 95% quality.
The Reality of DPI Upscaling
Increasing DPI of a small image does not add information that was never captured — it creates an estimation of what that information might be. AI-powered upscaling does this better than traditional methods, producing sharp edges and realistic textures. The best approach is always to start with the highest resolution original available.
Tips for Print-Ready Photos
- Use the original camera file — do not start from a compressed social media version
- Upscale only to 2–3× the original size for best results
- Sharpen after upscaling — upscaling always introduces some softness
- Ask your print lab what DPI they require — some accept 150–200 DPI for large format
Increase photo resolution for printing for free at imgresizr.com — no software required, instant results.