https://bugs.documentfoundation.org/show_bug.cgi?id=93136
Bug ID: 93136
Summary: [FILEOPEN] Cannot insert tiff file into draw, reports
format being unknown
Product: LibreOffice
Version: 4.3.7.2 release
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Draw
Assignee: [email protected]
Reporter: [email protected]
I cannot insert a tiff file into a draw document. Error message is that the
image format is unknown. This is true both when dragging the file into the
program window, or using the menu insert → image → from file. The open dialog
appearing in the second variant explicitly lists tiff files in the file type
select drop-down element, so tiff should be supported. The tiff file was
generated using ImageMagick and opens fine in common programs such as gimp or
irfan view, so the problem seems to be in draw.
It took me hours to find out that the reason was that the tiff file had an
alpha channel. Removing the alpha channel from the image makes it possible to
import it.
Solution should be to change the error message appearing to something
meaningful, like: “Tiff images with an alpha channel are not supported.” − or
make it possible to open them, perhaps by internally converting them to PNG.
PNG files with alpha channels seem to work.
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