  Context: Data from ground-based, high-resolution solar telescopes can only be
used for science with calibrations and processing, which requires detailed
knowledge about the instrumentation. [...] Aims: We aim to provide observers
with a user-friendly data pipeline for data from the Swedish 1-meter Solar
Telescope (SST) that delivers science-ready data together with the metadata
needed for proper interpretation and archiving. Methods: We briefly describe
the [instrumentation]. We summarize the processing steps from raw data to
science-ready data cubes in FITS files. We report calibrations and
compensations for data imperfections in detail. Misalignment of \ion{Ca}{ii}
data due to wavelength-dependent dispersion is identified, characterized, and
compensated for. We describe intensity calibrations that remove or reduce the
effects of filter transmission profiles as well as solar elevation changes. We
present REDUX, a new version of the MOMFBD image restoration code, with
multiple enhancements and new features. [...] We describe how image restoration
is used [...]. The science-ready output is delivered in FITS files, with
metadata compliant with the SOLARNET recommendations. Data cube coordinates are
specified within the World Coordinate System (WCS). Cavity errors are specified
as distortions of the WCS wavelength coordinate with an extension of existing
WCS notation. We establish notation for specifying the reference system for
Stokes vectors [...]. [CRISPEX] has been extended to accept SSTRED output
[...]. Results: SSTRED is a mature data-processing pipeline for imaging
instruments, developed and used for the SST/CHROMIS imaging spectrometer and
the SST/CRISP spectropolarimeter. SSTRED delivers well-characterized,
science-ready, archival-quality FITS files with well-defined metadata. The
SSTRED code, as well as REDUX and CRISPEX, is freely available through git
repositories.
