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Image Optimization: Boosting Web Performance

Optimize images for faster web performance. Learn formats, compression, lazy loading, and responsive images.

B
Bootspring Team
Engineering
February 26, 2026
2 min read

Images often account for most page weight. This guide covers optimization techniques for faster loading.

Modern Image Formats#

Format Comparison#

FormatBest ForBrowser Support
WebPPhotos, graphics97%+
AVIFHigh compression85%+
JPEGPhotos (fallback)100%
PNGTransparency100%
SVGIcons, illustrations100%

Picture Element for Fallbacks#

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Responsive Images#

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Lazy Loading#

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Next.js Image Optimization#

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Build-Time Optimization#

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CDN Configuration#

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Always specify dimensions, use modern formats with fallbacks, and lazy load below-the-fold images.

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