Bug 316804

Summary:	Dolphin doesn't generate previews for images with incorrect extensions
Product:	[Applications] dolphin	Reporter:	Mircea Kitsune <sonichedgehog_hyperblast00>
Component:	general	Assignee:	Dolphin Bug Assignee <dolphin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	sonichedgehog_hyperblast00
Priority:	NOR
Version First Reported In:	2.2
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Mircea Kitsune 2013-03-15 22:22:18 UTC

Although since KDE 4.10.0 Gwenview knows to open images with incorrect extensions, Dolphin still won't generate thumbnails for them when Preview is enabled. For example, if a jpg file has the extension png, no thumbnail is shown and instead we see the default image icon.

Reproducible: Always

Steps to Reproduce:
1. In Dolphin, browse a folder which contains an image.
2. Make sure the image's extension is incorrect. If it's a jpg make it a png or the other way around.
3. Click the "Preview" button to enable thumbnails.
Actual Results:  
You'll see the default image icon.

Expected Results:  
You should see a preview of the image.

This was a known issue in Gwenview but since KDE 4.10.0 it was fixed there. I thought this would also fix thumbnails automatically but it seems not, so I believe it needs its own attention.

Although no one should use incorrect extensions, this happens shockingly often for images I get online. For that reason a lot of stuff I save from galleries doesn't preview, which is why this bug can frequently be a problem.

Comment 1 Jekyll Wu 2013-03-16 02:07:09 UTC

See bug 182361  for the gwenview ticket.

*** This bug has been marked as a duplicate of bug 220496 ***