| Property | Type | Description | |
|---|---|---|---|
| alpha_compression | int | ||
| alpha_filtering | int | ||
| alpha_quality | int | ||
| autofilter | int | ||
| emulate_jpeg_size | int | ||
| filter_sharpness | int | ||
| filter_strength | int | ||
| filter_type | int | ||
| image_hint | WebPImageHint | ||
| lossless | int | ||
| low_memory | int | ||
| method | int | ||
| partition_limit | int | ||
| partitions | int | ||
| pass | int | ||
| preprocessing | int | ||
| quality | float | ||
| segments | int | ||
| show_compressed | int | ||
| sns_strength | int | ||
| target_PSNR | float | ||
| target_size | int | ||
| thread_level | int |
