libvips : an image processing library
Is for experiemtning with libspng.
cd libspng meson build --prefix=/home/john/vips --libdir=/home/john/vips/lib \ --buildtype=release cd build ninja ninja install
$ time vips avg wtc.png 117.065766 real 0m2.972s user 0m3.376s sys 0m0.197s
And for libpng:
$ time vips avg wtc.png 117.065766 real 0m3.816s user 0m4.177s sys 0m0.221s
It has around 300 operations covering arithmetic, histograms, convolution, morphological operations, frequency filtering, colour, resampling, statistics and others. It supports a large range of numeric types, from 8-bit int to 128-bit complex. Images can have any number of bands. It supports a good range of image formats, including JPEG, TIFF, PNG, WebP, HEIC, FITS, Matlab, OpenEXR, PDF, SVG, HDR, PPM / PGM / PFM, CSV, GIF, Analyze, NIfTI, DeepZoom, and OpenSlide. It can also load images via ImageMagick or GraphicsMagick, letting it work with formats like DICOM.
It comes with bindings for C, C++, and the command-line. Full bindings are available for Ruby, Python, PHP, C# / .NET, Go, and Lua. libvips is used as an image processing engine by sharp (on node.js), bimg, sharp for Go, Ruby on Rails, carrierwave-vips, mediawiki, PhotoFlow and others. The official libvips GUI is nip2, a strange combination of a spreadsheet and an photo editor.
There are packages for most Unix-like operating systems, including macOS. Check your package manager.
There are binaries for Windows in releases.
Building libvips from a source tarball
We keep pre-baked tarballs in releases.
Untar, then in the libvips directory you should just be able to do:
Check the summary at the end of
configure carefully. libvips must have
You'll need the dev packages for the file format support you want. For basic jpeg and tiff support, you'll need
libgsf-1-dev. See the Dependencies section below for a full list of the things that libvips can be configured to use.
configure is looking OK, compile and install with the usual:
make sudo make install
By default this will install files to
Run the test suite with:
Run a specific test with:
pytest test/test-suite/test_foreign.py -k test_tiff
Building libvips from git
Clone the latest sources with:
git clone git://github.com/libvips/libvips.git
Building from git needs more packages -- you'll need at least
gobject-introspection, see the dependencies section below. For example:
brew install gtk-doc
Then generate the build system with:
CFLAGS="-g -Wall" CXXFLAGS="-g -Wall" \ ./configure --prefix=/home/john/vips --enable-debug make make install
libvips has to have
libexpat1-dev. Other dependencies are optional.
If suitable versions are found, libvips will add support for the following libraries automatically. See
./configure --help for a set of flags to control library detection. Packages are generally found with
pkg-config, so make sure that is working.
Libraries like giflib and nifti do not use
pkg-config so libvips will also look for them in the default path and in
$prefix. If you have installed your own versions of these libraries in a different location, libvips will not see them. Use switches to libvips configure like:
./configure --prefix=/Users/john/vips \ --with-giflib-includes=/opt/local/include \ --with-giflib-libraries=/opt/local/lib
CFLAGS="-g -Wall -I/opt/local/include -L/opt/local/lib" \ CXXFLAGS="-g -Wall -I/opt/local/include -L/opt/local/lib" \ ./configure --prefix=/Users/john/vips
The IJG JPEG library. Use the
-turbo version if you can.
If available, libvips adds support for EXIF metadata in JPEG files.
The standard gif loader. If this is not present, vips will try to load gifs via imagemagick instead.
The usual SVG loader. If this is not present, vips will try to load SVGs via imagemagick instead.
If present, libvips will attempt to load PDFs via PDFium. This library must be packaged by https://github.com/jcupitt/docker-builds/tree/master/pdfium
If PDFium is not detected, libvips will look for poppler-glib instead.
The Poppler PDF renderer, with a glib API. If this is not present, vips will try to load PDFs via imagemagick.
If available, libvips adds support for creating image pyramids with
The TIFF library. It needs to be built with support for JPEG and ZIP compression. 3.4b037 and later are known to be OK.
If libvips finds this library, it uses it for fourier transforms.
vips_icc_transform() are available for transforming images with ICC profiles.
If present, libvips can load and save png files.
If present, libvips can write 8-bit palette-ised PNGs.
ImageMagick, or optionally GraphicsMagick
If available, libvips adds support for loading all libMagick-supported image file types. Use
--with-magickpackage=GraphicsMagick to build against graphicsmagick instead.
Imagemagick 6.9+ needs to have been built with
--with-modules. Most packaged IMs are, I think.
If you are going to be using libvips with untrusted images, perhaps in a web server, for example, you should consider the security implications of enabling a package with such a large attack surface.
If available, libvips adds support for text rendering. You need the package pangoft2 in
If available, vips will accelerate some operations with this run-time compiler.
If available, vips can load images from Matlab save files.
If available, vips can load FITS images.
If available, vips can load and save WebP images.
If available, vips can load and save NIfTI images.
If available, libvips will directly read (but not write, sadly) OpenEXR images.
If available, libvips can load OpenSlide-supported virtual slide files: Aperio, Hamamatsu, Leica, MIRAX, Sakura, Trestle, and Ventana.
If available, libvips can load and save HEIC images.
This project exists thanks to all the people who contribute.
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