v0.35.0-rc.0

Breaking Changes

Node.js 18 support dropped — requires ≥20.9.0

install script removed — source compilation now opt-in via build script

AVIF quality metrics changed — iq (SSIMULACRA2) replaces ssim

Removed deprecated properties: failOnError constructor, paletteBitDepth from metadata, sharpen operation properties

Format rename: format.jp2k → format.jp2

Windows 32-bit binaries deprecated (win32-ia32)

Features

AVIF/HEIF tune option — control quality metrics for output

withGainMap() — process HDR JPEG images with embedded gain maps

toUint8Array() — output as TypedArray backed by transferable ArrayBuffer

trim() margin option — add padding after trim

WebP exact option — control transparent pixel colour values

Breaking: Drop support for Node.js 18, now requires Node.js >= 20.9.0.
Breaking: Remove install script from package.json file. Compiling from source is now opt-in via the build script.
Breaking: AVIF output is now tuned using SSIMULACRA2-based iq quality metrics rather than ssim.
Breaking: Remove deprecated failOnError constructor property.
Breaking: Remove deprecated paletteBitDepth from metadata response.
Breaking: Remove deprecated properties from sharpen operation.
Breaking: Rename format.jp2k as format.jp2 for API consistency.
Upgrade to libvips v8.18.0 for upstream bug fixes.
Deprecate Windows 32-bit (win32-ia32) prebuilt binaries.
Add AVIF/HEIF tune option for control over quality metrics. #4227
Add withGainMap to process HDR JPEG images with embedded gain maps. #4314
Add toUint8Array for output image as a TypedArray backed by a transferable ArrayBuffer. #4355
TypeScript: Ensure FormatEnum keys match reality. #4475
Add margin option to trim operation. #4480 @eddienubes
Add WebP exact option for control over transparent pixel colour values.