phmccarty/img2pdf
1
0
Fork 0
forked from josch/img2pdf
Code Pull requests Activity

Readme: remove alpha channels section

Browse source
This commit is contained in:
mara0004 2021-10-03 11:50:15 +00:00 committed by Johannes Schauer Marin Rodrigues
parent cde7472d15
commit 1ffb160453
Signed by untrusted user: josch
GPG key ID: F2CBA5C78FBD83E1
1 changed files with 0 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
README.md
View file

@ -77,14 +77,6 @@ Bugs
files with other colorspaces, you must explicitly specify it using the files with other colorspaces, you must explicitly specify it using the
`--colorspace` option. `--colorspace` option.
- Input images with alpha channels are not allowed. PDF only supports
transparency using binary masks but is unable to store 8-bit transparency
information as part of the image itself. But img2pdf will always be lossless
and thus, input images must not carry transparency information. You can
remove the alpha channel for example with imagemagick:
convert input.png -background white -alpha remove -alpha off output.png
- An error is produced if the input image is broken. This commonly happens if - An error is produced if the input image is broken. This commonly happens if
the input image has an invalid EXIF Orientation value of zero. Even though the input image has an invalid EXIF Orientation value of zero. Even though
only nine different values from 1 to 9 are permitted, Anroid phones and only nine different values from 1 to 9 are permitted, Anroid phones and