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FFTW

Source offer for FFTW, licensed under GPL-2.0-or-later and shipped in Morphjet's images pack.

Note: FFT backend inside libvips on all three platforms, and inside ImageMagick on Linux

Corresponding source

Morphjet distributes FFTW as a bundled subprocess. Under GPL-2.0-or-later we publish its complete corresponding source for download at no charge: the exact upstream version we built from, plus any Morphjet patches and the build/relocation scripts used to produce the shipped binary.

Download source →

Free to anyone; a quick anti-bot check guards the file. The archive holds every version listed below, so it matches whichever build you received.

Versions shipped

Morphjet does not ship one version of FFTW everywhere — each platform's build channel pins its own. The archive above contains the corresponding source for every row here.

VersionShipped inBuilt from
3.3.11 images/linux-x86_64, images/macos-aarch64, images/windows-x86_64 inside libvips' closure on all three platforms (engine/vips/lib/libfftw3.*, engine/vips/bin/libfftw3-3.dll), and additionally inside ImageMagick's on Linux. Backs `magick -fft` only.

Upstream project (reference only — upstream removes old releases, which is why we host the source ourselves): https://www.fftw.org/download.html

The full text of the GPL-2.0-or-later license ships inside the pack (share/licenses/fftw) and is reproduced in the app's About screen. The version you are running is shown there too. The source stays available for as long as we distribute this build. Not legal advice.