summaryrefslogtreecommitdiffstatshomepage
path: root/docs/advanced/image-processing.rst
diff options
context:
space:
mode:
authorWolfgang Müller2024-03-05 18:08:09 +0100
committerWolfgang Müller2024-03-05 19:25:59 +0100
commitd1d654ebac2d51e3841675faeb56480e440f622f (patch)
tree56ef123c1a15a10dfd90836e4038e27efde950c6 /docs/advanced/image-processing.rst
downloadhircine-d1d654ebac2d51e3841675faeb56480e440f622f.tar.gz
Initial commit0.1.0
Diffstat (limited to '')
-rw-r--r--docs/advanced/image-processing.rst19
1 files changed, 19 insertions, 0 deletions
diff --git a/docs/advanced/image-processing.rst b/docs/advanced/image-processing.rst
new file mode 100644
index 0000000..dba71d0
--- /dev/null
+++ b/docs/advanced/image-processing.rst
@@ -0,0 +1,19 @@
+Image processing
+================
+
+Images are processed by the `Python Imaging Library (Pillow)
+<https://pillow.readthedocs.io/en/stable/index.html>`_ which supports a `wide
+variety
+<https://pillow.readthedocs.io/en/stable/handbook/image-file-formats.html>`_ of
+image formats. Processed images are stored in the :ref:`overview-object-store`
+using the `webp <https://developers.google.com/speed/webp>`_ format. Images are
+resampled using a `Lanczos filter
+<https://pillow.readthedocs.io/en/stable/handbook/concepts.html#PIL.Image.Resampling.LANCZOS>`_.
+
+Scaling
+-------
+
+By default, images are scaled to fit within the bounds of ``4200x2000`` pixels
+for display in the reader, and ``1680x800`` pixels for use as thumbnails. These
+values are optimized for larger displays and may be :ref:`changed in the
+configuration file <cfg-scale>` if you do not require such high resolutions.