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Image file size estimator
How big will a 2000×1500 JPG be at quality 80? The numbers below give you a quick estimate, then the tool exports the real thing.
Drop a photo here, or tap to choose
JPG · PNG · WEBP · HEIC — files never leave your browser
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Rule of thumb for photographic JPG: file size ≈ pixel count × 0.1 to 0.4 bytes per pixel, depending on quality. A 6 MP photo at quality 85 is typically 1.5–2.5 MB.
WebP at the same visual quality is 25–35 % smaller. PNG of a photo is 4–8× larger than JPG — only worth it for graphics with sharp edges or transparency.
The tool below runs a real binary search at export time, so you do not have to guess — set a target size and it finds the exact quality that fits.
FAQ
Why are JPG estimates so variable?
Photographic content (skies, skin) compresses better than busy content (foliage, fabric). The estimate is a range, not a number.
Can I get a smaller file than the estimate?
Often yes — drop dimensions or switch to WebP.
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