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History & Satellite Earth 60 FPS Hardware Accelerated

Urban Expansion Night Lights Before & After: 30-Year Metropolis Sprawl

Drag across nocturnal satellite radiometry and watch dark rural coastlines ignite into luminous interconnected megalopolises.

High-Resolution Suomi VIIRS (2026)
Nighttime Radiance (DMSP-OLS 1995)
Nighttime Radiance (DMSP-OLS 1995) High-Resolution Suomi VIIRS (2026)

Embed This Interactive Slider on Your Site

Works with WordPress, Webflow, Shopify, Squarespace, Ghost, Notion, and HTML websites.

Zero Script Dependency
<iframe src="https://diffslider.app/embed/demo-urban-sprawl-night-lights-satellite-slider" width="100%" height="600" frameborder="0" allowfullscreen loading="lazy" style="border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; overflow: hidden; max-width: 100%;"></iframe>

Customizing your embed:

  • ?theme=light – Force clean white background
  • ?toolbar=0 – Ultra-clean minimalist mode (slider only)
  • ?pos=65 – Set default divider split position to 65%
  • ?mode=side – Default to side-by-side mode
Make Your Own

Create Your Own Before & After Comparison

Drag & drop 2 to 10 photos. No software to install, no watermark, 60 FPS mobile-ready.

  • ✓ Free & no credit card required
  • ✓ Up to 1600% synchronized pixel zoom
  • ✓ Instant permanent link & embed snippet

Photography & Alignment Protocol

  • 进行无云辐射标定与去月光反射校正;
  • 归一化两代传感器动态范围差异;
  • 保留海岸线轮廓及未通电保护区作为黑暗底线。

Frequently Asked Questions

Can urban planners correlate this with economic GDP growth? ▼

Yes, high-res interactive light sprawl mirrors industrial zone and airport infrastructure expansion precisely.