Image Compression Estimator
Estimate compressed file size for any image at JPG quality 60/75/85/95 — useful for performance optimization and CDN cost forecasting.
Inputs
Compressed Sizes
—
Run estimate
Pixels—
JPG quality 60—
JPG quality 75—
JPG quality 85—
JPG quality 95—
WebP equivalent—
Quality 75-85 is the sweet spot
Most users cannot tell the difference between JPG q85 and q95, but the file size differs by 50-70%. For non-hero images, q75 or even q60 is invisible. Compressing aggressively saves bandwidth, improves Core Web Vitals, and reduces CDN costs at scale.
Frequently Asked Questions
What about WebP?
WebP averages 30-40% smaller than JPG at equivalent perceived quality. Modern browser support is universal. Serve WebP first with a JPG fallback.
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