4x Upscale – Quadruple Your Image Size
Need significant enlargement? 4x upscaling quadruples your image dimensions, producing 16 times as many pixels.
What 4x Upscaling Means
Dimensions: Width and height quadruple (1000×750 → 4000×3000)
Pixel count: Total pixels increase 16x (750K → 12M pixels)
Quality: Excellent results from good quality sources
4x represents substantial enlargement – choose this when 2x isn't enough.
4x Upscaling Uses
Large format printing: Small photos → poster-size prints
4K optimization: Sub-HD content → full 4K display
Dramatic cropping: Extract details while maintaining resolution
Professional requirements: Meet high-resolution specifications
Best Practices for 4x
Start with quality: Good sources produce excellent 4x results
Enhance first: Improve quality before 4x upscaling
Check source resolution: Ensure starting point supports 4x enlargement
Related Upscaling Options
2x Upscale – Double size
Image Upscaler – Main upscaling tool
4K Upscaling – 4K output
Upscale for Print – Print preparation
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What Our Customers Say
"The restoration quality is museum-level. I use it for professional archival projects and clients are always impressed."
"The upscaling technology is light years ahead of anything else I've tried. Photos that were unusable are now print-quality."
"Brought my great-grandfather's military photos to life with colorization. My family was in tears seeing him in full color for the first time. Thank you!"
Frequently Asked Questions
4x upscale means quadrupling both the width and height of an image, resulting in 16 times as many total pixels. A 1000×1000 pixel image becomes 4000×4000 pixels after 4x upscaling. This substantial enlargement is commonly needed for large format printing, 4K displays, or when working with small original images.
4x upscaling is needed when 2x doesn't provide sufficient resolution for your purpose. Common scenarios include: preparing small images for large prints, converting low-resolution photos for 4K display, enlarging vintage photos with limited original resolution, or creating poster-size prints from moderate-resolution sources. Calculate your target resolution needs to determine if 4x is necessary.
Yes, AI-powered 4x upscaling produces good quality results, especially from reasonably high-quality source images. While 2x upscaling may be slightly sharper per pixel, 4x upscaling with modern AI still generates appropriate detail and maintains natural appearance. Results depend on source quality – clear, well-exposed originals upscale to 4x excellently.
2x upscaling doubles dimensions (4x total pixels), while 4x upscaling quadruples dimensions (16x total pixels). 2x generally produces slightly better quality because there's more original information per output pixel, but 4x may be necessary to reach your target resolution. 4x upscaling is essentially what you'd get from two 2x operations, but doing it in one pass produces better results.
Technically any photo can be upscaled 4x, but result quality varies with source quality. High-quality originals – clear, sharp, well-exposed photos – upscale to 4x very successfully. Lower-quality sources – heavily compressed, blurry, or very small images – will improve but may not reach pristine quality at 4x. Enhancement before upscaling helps maximize results.