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Back to BlogHow-To

How to Upscale Screenshots and Blurry Images for Presentations

MergeImages TeamApril 4, 20266 min read
How to Upscale Screenshots and Blurry Images for Presentations

You paste a screenshot into your presentation and it looks fine on your laptop. Then you present on a projector or large monitor — and it's a pixelated mess. Here's why it happens and how to fix it.

Why Screenshots Look Blurry in Presentations

  • Low source DPI — screenshots are captured at screen resolution (72-96 DPI), but projectors display at much larger physical sizes
  • Scaling — PowerPoint and Google Slides stretch small images to fill the slide
  • Compression — presentation software compresses images on export
  • Retina vs. standard — a 2x Retina screenshot is already 2x, but a standard display screenshot is 1x

The Fix: AI Upscaling

AI upscaling recovers text clarity, sharpens UI elements, and cleans up compression artifacts that basic stretching can't.

Step-by-Step

  1. Take your screenshot — use the highest resolution available (Retina/HiDPI if possible)
  2. Upload to Image Upscaler — select 2x for most screenshots, 4x for tiny crops
  3. Choose the right model:
    • Recraft Crisp — best for text-heavy screenshots, code, and UI
    • Real-ESRGAN — good for screenshots with photos or mixed content
    • AuraSR v2 — best detail preservation for complex UI
  4. Download and insert into your presentation

Recommended Resolutions

Presentation DisplayMin Image Size
1080p projector1920x1080px
4K display3840x2160px
Printed handout (A4)2480x3508px (300 DPI)
Google Slides (web)1920x1080px

Common Screenshot Scenarios

App UI Screenshots

Dashboard screenshots, app interfaces, and settings screens. These need sharp text and clean icons.

  • Use Recraft Crisp model for sharpest text
  • Upscale 2x for 1080p projectors, 4x for 4K

Charts and Graphs

Excel/Google Sheets charts exported as images often lose quality.

  • Upscale with Real-ESRGAN — handles gradients and colors well
  • Better yet: export charts as SVG when possible

Code Screenshots

Terminal output, IDE screenshots, code samples.

  • Recraft Crisp handles monospace text best
  • Consider using a code screenshot tool at high resolution instead

Web Page Captures

Full-page screenshots of websites or competitor analysis.

  • Often very large files — compress after upscaling if needed
  • Use AuraSR v2 for the most natural-looking result

Merging Multiple Screenshots

For comparison slides, merge screenshots side by side:

  • Two apps compared: Horizontal merge with 4px spacing
  • Step-by-step flow: Vertical merge showing progression
  • Dashboard overview: Photo Collage in a 2x2 grid

Pro Tips

  • Capture at 2x — on macOS, hold Shift while screenshotting in some apps for Retina resolution
  • Crop before upscaling — focus the AI on the relevant portion
  • Don't over-upscale — 2x is usually enough. 4x on a large screenshot creates unnecessarily huge files
  • Use PNG — screenshots with text should stay as PNG, not JPEG, to avoid compression artifacts

Conclusion

Blurry screenshots ruin otherwise polished presentations. A quick AI upscale takes 5 seconds and ensures your screenshots look sharp on any screen. For comparison slides, merge screenshots side by side to create clear visual narratives.

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