Function tryProgressiveResizing

src/utils/imageResizer.ts:646–680

(
  context: ImageCompressionContext,
  sharp: SharpFunction,
)

}

async function tryProgressiveResizing(
  context: ImageCompressionContext,
  sharp: SharpFunction,
): Promise<CompressedImageResult | null> {
  const scalingFactors = [1.0, 0.75, 0.5, 0.25]

  for (const scalingFactor of scalingFactors) {
    const newWidth = Math.round(
      (context.metadata.width || 2000) * scalingFactor,
    )
    const newHeight = Math.round(
      (context.metadata.height || 2000) * scalingFactor,
    )

    let resizedImage = sharp(context.imageBuffer).resize(newWidth, newHeight, {
      fit: 'inside',
      withoutEnlargement: true,
    })

    // Apply format-specific optimizations
    resizedImage = applyFormatOptimizations(resizedImage, context.format)

    const resizedBuffer = await resizedImage.toBuffer()

    if (resizedBuffer.length <= context.maxBytes) {
      return createCompressedImageResult(
        resizedBuffer,
        context.format,
        context.originalSize,
      )
    }
  }

  return null
}

function applyFormatOptimizations(
  image: SharpInstance,