Add AVIF, WebP and MozJPEG output encoding support#75079
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adamsilverstein merged 2 commits intoJan 30, 2026
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This commit implements output format conversion for client-side media processing, enabling generation of modern image formats (AVIF, WebP) and modern JPEG codecs (MozJPEG) during upload. Key changes: - Add TranscodeImage operation type for format conversion - Add imageOutputFormats, jpegInterlaced, pngInterlaced, gifInterlaced settings that flow from PHP REST API through the settings stack - Implement transcodeImageItem action using vipsConvertImageFormat - Update prepareItem to check format mapping and add TranscodeImage operations when needed - Add transparency check for PNG->JPEG to preserve alpha channels - Apply format conversion to generated thumbnails - Add MozJPEG optimizations (optimize_coding, quant_table) for JPEG output, providing ~10-15% smaller file sizes The implementation respects WordPress's image_editor_output_format filter for format mapping configuration. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Fix blob URL memory leak using try/finally pattern for transparency check - Add format validation before ImageFormat type assertion - Improve JSDoc for Settings interface properties - Add clarifying comment for empty filename in image_editor_output_format filter Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
This PR implements output format conversion for client-side media processing, enabling generation of modern image formats (AVIF, WebP) and MozJPEG-optimized JPEG encoding during upload.
Fixes #74364
Key changes:
imageOutputFormats,jpegInterlaced,pngInterlaced,gifInterlacedsettings flow from PHP REST API through the settings stackimage_editor_output_formatfilter for configuring output formatsoptimize_codingandquant_tableoptions for ~10-15% smaller file sizesFiles changed:
@wordpress/upload-media@wordpress/vips@wordpress/core-data@wordpress/editor@wordpress/block-editorTest plan
image_editor_output_formatfilter to map PNG → WebP🤖 Generated with Claude Code