JPEG-FI JPEG - JFIF Compliant

Extensions: .jpg, .jif, .jpeg, .jpe

A JPEG format based on the Freeimage library.

This format supports grayscale and RGB images.

The freeimage plugin requires a freeimage binary. If this binary not available on the system, it can be downloaded manually from <https://github.com/imageio/imageio-binaries> by either

• the command line script imageio_download_bin freeimage

• the Python method imageio.plugins.freeimage.download()

Parameters for reading

exifrotatebool

Automatically rotate the image according to the exif flag. Default True. If 2 is given, do the rotation in Python instead of freeimage.

quickreadbool

Read the image more quickly, at the expense of quality. Default False.

Parameters for saving

qualityscalar

The compression factor of the saved image (1..100), higher numbers result in higher quality but larger file size. Default 75.

progressivebool

Save as a progressive JPEG file (e.g. for images on the web). Default False.

optimizebool

On saving, compute optimal Huffman coding tables (can reduce a few percent of file size). Default False.

baselinebool

Save basic JPEG, without metadata or any markers. Default False.