josch/img2pdf
3
6
Fork 10
Code Issues 22 Pull requests 5 Projects Releases 3 Wiki Activity

README.md: clarify PDF transparency (closes: #76)

Browse source
This commit is contained in:
Johannes 'josch' Schauer 2020-05-06 08:55:46 +02:00
parent 60fa588cfb
commit 17dd59e722
Signed by: josch
GPG key ID: F2CBA5C78FBD83E1
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
README.md
View file

@ -77,10 +77,10 @@ Bugs
files with other colorspaces, you must explicitly specify it using the
`--colorspace` option.
- Input images with alpha channels are not allowed. PDF doesn't support alpha
channels in images and thus, the alpha channel of the input would have to be
discarded. But img2pdf will always be lossless and thus, input images must
not carry transparency information.
- 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.
- img2pdf uses PIL (or Pillow) to obtain image meta data and to convert the
input if necessary. To prevent decompression bomb denial of service attacks,