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imgproxy/docs/best_format.md
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fix: rendering the pro image (#1054) 
* Update autoquality.md

* Update best_format.md

* Update chained_pipelines.md

* Update chaining_the_processing.md

* Update encrypting_the_source_url.md

* Update getting_the_image_info.md

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Best formatpro

You can use the best value for the format option or the extension to make imgproxy pick the best format for the resultant image.

imgproxy measures the complexity of the image to choose when it should use a lossless or near-lossless encoding. Then imgproxy tries to save the image in multiple formats to pick one with the smallest resulting size.

📝Note: imgproxy uses only the formats listed as preferred when choosing the best format. It may also use AVIF or WebP if AVIF/WebP support detection is enabled.

📝Note: imgproxy will use AVIF or WebP only if AVIF/WebP support detection is enabled.

📝Note: imgproxy may change your quality and autoquality settings if the best format is used.

Configuration

  • IMGPROXY_BEST_FORMAT_COMPLEXITY_THRESHOLD : the image complexity threshold. imgproxy will use a lossless or near-lossless encoding for images with low complexity. Default: 5.5
  • IMGPROXY_BEST_FORMAT_MAX_RESOLUTION: when greater than 0 and the image's resolution (in megapixels) is larger than the provided value, imgproxy won't try all the applicable formats and will just pick one that seems the best for the image
  • IMGPROXY_BEST_FORMAT_BY_DEFAULT: when true and the resulting image format is not specified explicitly, imgproxy will use the best format instead of the source image format
  • IMGPROXY_BEST_FORMAT_ALLOW_SKIPS: when true and the best format is used, imgproxy will skip processing of SVG and formats listed to skip processing