sharp

Expose libvips' linear transform feature. #1024 @3epnm

Expose angle option for tile-based output. #1121 @BiancoA

Prevent crop operation when image already at or below target dimensions. #1134 @pieh

Expose offset coordinates of strategy-based crop. #868 @mirohristov-com

PNG output now defaults to adaptiveFiltering=false, compressionLevel=9 #872 @wmertens

Add stats feature for pixel-derived image statistics. #915 @rnanwani

Add failOnError option to fail-fast on bad input image data. #976 @mceachen

Resize: switch to libvips' implementation, make fastShrinkOnLoad optional, remove interpolator and centreSampling options. #977 @jardakotesovec

Attach finish event listener to a clone only for Stream-based input. #995 @whmountains

Add tilecache before smartcrop to avoid over-computation of previous operations. #1028 @coffeebite

Prevent toFile extension taking precedence over requested format. #1037 @tomgallagher

Add support for gravity option to existing embed feature. #1038 @AzureByte

Expose IPTC and XMP metadata when available. #1079 @oaleynik

TIFF output: switch default predictor from 'none' to 'horizontal' to match libvips' behaviour.

Skip shrink-on-load when trimming. #888 @kleisauke

Migrate from got to simple-get for basic auth support. #945 @pbomb

Expose libvips' xres and yres properties for TIFF output. #828 @YvesBos

Ensure flip and flop operations work with auto-rotate. #837 @rexxars

Allow binary download URL override via SHARP_DIST_BASE_URL env variable. #841

Add support for Solus Linux. #857 @ekremkaraca

Remove the previously-deprecated output format "option" functions: quality, progressive, compressionLevel, withoutAdaptiveFiltering, withoutChromaSubsampling, trellisQuantisation, trellisQuantization, overshootDeringing, optimiseScans and optimizeScans.

Ensure maximum output dimensions are based on the format to be used. #176 @stephanebachelier

Avoid costly (un)premultiply when using overlayWith without alpha channel. #573 @strarsis

Include pixel depth (e.g. "uchar") when reading metadata. #577 @moedusa

Add support for Buffer and Stream-based TIFF output. #587 @strarsis

Expose warnings from libvips via NODE_DEBUG=sharp environment variable. #607 @puzrin

Switch to the libvips implementation of "attention" and "entropy" crop strategies. #727

Improve performance and accuracy of nearest neighbour integral upsampling. #752 @MrIbby

Constructor single argument API: allow plain object, reject null/undefined. #768 @kub1x

Ensure ARM64 pre-built binaries use correct C++11 ABI version. #772 @ajiratech2

Prevent aliasing by using dynamic values for shrink(-on-load). #781 @kleisauke

Expose libvips' "squash" parameter to enable 1-bit TIFF output. #783 @YvesBos

Add support for rotation using any multiple of +/-90 degrees. #791 @ncoden

Add "jpg" alias to toFormat as shortened form of "jpeg". #814 @jingsam

Allow toBuffer to optionally resolve a Promise with both info and data. #143 @salzhrani

Create blank image of given width, height, channels and background. #470 @pjarts

Add support for the "nearest" kernel for image reductions. #732 @alice0meta

Add support for TIFF compression and predictor options. #738 @kristojorg

Ensure Readable side of Stream can start flowing after Writable side has finished. #671 @danhaller

Expose WebP alpha quality, lossless and near-lossless output options. #685 @rnanwani

Improve error messages for invalid parameters. @spikeon #644

Simplify expression for finding vips-cpp libdir. #656

Allow HTTPS-over-HTTP proxy when downloading pre-compiled dependencies. @wangzhiwei1888 #679

Drop support for versions of Node prior to v4.

Deprecate the following output format "option" functions: quality, progressive, compressionLevel, withoutAdaptiveFiltering, withoutChromaSubsampling, trellisQuantisation, trellisQuantization, overshootDeringing, optimiseScans and optimizeScans. Access to these is now via output format functions, for example quality(n) is now jpeg({quality: n}) and/or webp({quality: n}).

Autoconvert GIF and SVG input to PNG output if no other format is specified.

Expose libvips' "centre" resize option to mimic *magick's +0.5px convention. #568

Ensure support for embedded base64 PNG and JPEG images within an SVG. #601 @dynamite-ready

Ensure premultiply operation occurs before box filter shrink. #605 @CmdrShepardsPie @teroparvinen

Add support for PNG and WebP tile-based output formats (in addition to JPEG). #622 @ppaskaris

Allow use of extend with greyscale input. #623 @ppaskaris

Allow non-RGB input to embed/extend onto background with an alpha channel. #646 @DaGaMs

C++11 ABI version is now auto-detected, remove sharp-cxx11 installation flag.

Add experimental 'attention' crop strategy. #295

Include .node extension for Meteor's require() implementation. #537 @isjackwild

Ensure convolution kernel scale is clamped to a minimum value of 1. #561 @abagshaw

Correct calculation of y-axis placement when overlaying image at a fixed point. #566 @Nateowami

Add pre-compiled libvips for OS X, ARMv7 and ARMv8. #312

Ensure boolean, bandbool, extractChannel ops occur before sRGB conversion. #504 @mhirsch

Recalculate factors after WebP shrink-on-load to avoid round-to-zero errors. #508 @asilvas

Prevent boolean errors during extract operation. #511 @mhirsch

Add joinChannel and toColourspace/toColorspace operations. #513 @mhirsch

Add support for raw pixel data with boolean and withOverlay operations. #516 @mhirsch

Prevent bandbool creating a single channel sRGB image. #519 @mhirsch

Ensure ICC profiles are removed from PNG output unless withMetadata used. #521 @ChrisPinewood

Add alpha channels, if missing, to overlayWith images. #540 @cmtt

Remove deprecated interpolateWith method - use resize(w, h, { interpolator: ... }) #310

Concat Stream-based input in single operation for ~+3% perf and less GC. #429 @papandreou

Add alpha channel, if required, before extend operation. #439 @frulo

Allow overlay image to be repeated across entire image via tile option. #443 @lemnisk8

Add cutout option to overlayWith feature, applies only the alpha channel of the overlay image. #448 @kleisauke

Ensure scaling factors are calculated independently to prevent rounding errors. #452 @puzrin

Add --sharp-cxx11 flag to compile with gcc's new C++11 ABI. #456 @kapouer

Add top/left offset support to overlayWith operation. #473 @rnanwani

Add convolve operation for kernel-based convolution. #479 @mhirsch

Add greyscale option to threshold operation for colourspace conversion control. #480 @mhirsch

Ensure ICC profiles are licenced for distribution. #486 @kapouer

Allow images with an alpha channel to work with LAB-colourspace based sharpen. #490 @jwagner

Add trim operation to remove "boring" edges. #492 @kleisauke

Add bandbool feature for channel-wise boolean operations. #496 @mhirsch

Add extractChannel operation to extract a channel from an image. #497 @mhirsch

Add ability to read and write native libvips .v files. #500 @mhirsch

Add boolean feature for bitwise image operations. #501 @mhirsch

Use libvips' new Lanczos 3 kernel as default for image reduction. Deprecate interpolateWith method, now provided as a resize option. #310 @jcupitt

Take advantage of libvips v8.3 features. Add support for libvips' new GIF and SVG loaders. Pre-built binaries now include giflib and librsvg, exclude *magick. Use shrink-on-load for WebP input. Break existing sharpen API to accept sigma and improve precision. #369

Remove unnecessary (un)premultiply operations when not resizing/compositing. #413 @jardakotesovec

Allow removal of limitation on input pixel count via limitInputPixels. Use with care. #250 #316 @anandthakker @kentongray

Use final output image for metadata passed to callback. #399 @salzhrani

Add support for writing tiled images to a zip container. #402 @felixbuenemann

Allow use of embed with 1 and 2 channel images. #411 @janaz

Improve Electron compatibility by allowing node-gyp rebuilds without npm. #412 @nouh

Add ability to extend (pad) the edges of an image. #128 @blowsie

Add support for Zoomify and Google tile layouts. Breaks existing tile API. #223 @bdunnette

Improvements to overlayWith: differing sizes/formats, gravity, buffer input. #239 @chrisriley

Add entropy-based crop strategy to remove least interesting edges. #295 @rightaway

Expose density metadata; set density of images from vector input. #338 @lookfirst

Emit post-processing 'info' event for Stream output. #367 @salzhrani

Ensure output image EXIF Orientation values are within 1-8 range. #385 @jtobinisaniceguy

Ensure ratios are not swapped when rotating 90/270 and ignoring aspect. #387 @kleisauke

Remove deprecated style of calling extract API. Breaks calls using positional arguments. #276

Improve vector image support by allowing control of density/DPI. Switch pre-built libs from Imagemagick to Graphicsmagick. #110 @bradisbell

Add support for raw, uncompressed pixel Buffer/Stream input. #220 @mikemorris

Switch from libvips' C to C++ bindings, requires upgrade to v8.2.2. #299

Control number of open files in libvips' cache; breaks existing cache behaviour. #315 @impomezia

Ensure 16-bit input images can be normalised and embedded onto transparent backgrounds. #339 #340 @janaz

Ensure selected format takes precedence over any unknown output filename extension. #344 @ubaltaci

Add support for libvips' PBM, PGM, PPM and FITS image format loaders. #347 @oaleynik

Ensure default crop gravity is center/centre. #351 @joelmukuthu

Improve support for musl libc systems e.g. Alpine Linux. #354 #359 @download13 @wjordan

Small optimisation when reducing by an integral factor to favour shrink over affine.

Add support for gamma correction of images with an alpha channel.

Upgrade libvips to v8.2.0 for improved vips_shrink.

Add pre-compiled libvips for ARMv6+ CPUs.

Ensure 16-bit input images work with embed option. #325 @janaz

Allow compilation with gmake to provide FreeBSD support. #326 @c0decafe

Attempt to remove temporary file after installation. #331 @dtoubelis

Allow use of SIMD vector instructions (via liborc) to be toggled on/off. #172 @bkw @puzrin

Ensure embedded ICC profiles output with perceptual intent. #321 @vlapo

Use the NPM-configured HTTPS proxy, if any, for binary downloads.

Bundle pre-compiled libvips and its dependencies for 64-bit Linux and Windows. #42

Take advantage of libvips v8.1.0+ features. #152

Add support for 64-bit Windows. Drop support for 32-bit Windows. #224 @sabrehagen

Switch default interpolator to bicubic. #289 @mahnunchik

Pre-extract rotatation should not swap width/height. #296 @asilvas

Ensure 16-bit+alpha input images are (un)premultiplied correctly. #301 @izaakschroeder

Add threshold operation. #303 @dacarley

Add negate operation. #306 @dacarley

Support options Object with existing extract operation. #309 @papandreou

Add corners, e.g. northeast, to existing gravity option. #291 @brandonaaron

Ensure correct auto-rotation for EXIF Orientation values 2 and 4. #288 @brandonaaron

Make static linking possible via --runtime_link install option. #287 @vlapo

Silence MSVC warning: "C4530: C++ exception handler used, but unwind semantics are not enabled". #244 @TheThing

Suppress gamma correction for input image with alpha transparency. #249 @compeak

Allow alpha transparency compositing via new overlayWith method. #97 @gasi

Expose raw ICC profile data as a Buffer when using metadata. #129 @homerjam

Allow image header updates via a parameter passed to existing withMetadata method. Provide initial support for EXIF Orientation tag, which if present is now removed when using rotate, flip or flop. #189 @h2non

Tighten constructor parameter checks. #221 @mikemorris

Allow one input Stream to be shared with two or more output Streams via new clone method. #235 @jaubourg

Use round instead of floor when auto-scaling dimensions to avoid floating-point rounding errors. #238 @richardadjogah

Allow embed of image with alpha transparency onto non-transparent background. #204 @mikemliu

Include C standard library for atoi as Xcode 6.3 appears to no longer do this. #228 @doggan

Add support for Windows (x86). #19 @DullReferenceException @itsananderson

Add support for Openslide input and DeepZoom output. #146 @mvictoras

Allow arbitrary aspect ratios when resizing images via new ignoreAspectRatio method. #192 @skedastik

Enhance output image contrast by stretching its luminance to cover the full dynamic range via new normalize method. #194 @bkw @codingforce