optimize_jpeg

image_optimizer::optimization::jpeg_optimizer

Function optimize_jpeg 

Source 
pub fn optimize_jpeg(
    input_path: &Path,
    output_path: &Path,
    args: &Cli,
    resized_img: Option<DynamicImage>,
) -> Result<()>
Expand description

Optimizes a JPEG image using mozjpeg compression.

This function uses the mozjpeg library to achieve superior compression compared to standard libjpeg implementations. It supports both quality-based compression and lossless mode, and can work with either the original image data or a pre-resized image.

§Arguments

  • input_path - Path to the source JPEG file
  • output_path - Path where the optimized JPEG will be written
  • args - CLI configuration containing quality settings and lossless flag
  • resized_img - Optional pre-resized image data; if None, reads from input_path

§Returns

Returns Ok(()) on successful optimization.

§Errors

Returns an error if:

  • JPEG decompression or compression fails
  • File I/O operations fail (reading input or writing output)
  • Image dimensions are too large to convert to u32
  • RGB color space conversion fails