Last modified: 2008-07-29 21:07:01 UTC

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Bug 6316 - Creating thumbnails of PNG files is broken
Creating thumbnails of PNG files is broken
Status: RESOLVED WORKSFORME
Product: Wikimedia
Classification: Unclassified
General/Unknown (Other open bugs)
unspecified
All All
: High major with 1 vote (vote)
: ---
Assigned To: Nobody - You can work on this!
:
: 6317 (view as bug list)
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2006-06-15 11:52 UTC by Tim Bartel
Modified: 2008-07-29 21:07 UTC (History)
2 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Tim Bartel 2006-06-15 11:52:41 UTC
Yesterday I tried to create a thumbnail and resized version of
http://meta.wikimedia.org/wiki/Image:Edits_by_contributors_age_en.png - This
didn't work. The image is not shown. I ignored it.

Today a user told me, that there are PNG thumbnails at the wikinews mainpage,
which don't show up.
Examples from this user:
http://en.wikinews.org/w/index.php?title=Australian_government_to_censor_3G_mobile_content&oldid=268961
http://en.wikinews.org/w/index.php?title=Template:Third_lead&oldid=268955

I re-tested my experience from yesterday - still doesn't work:
http://meta.wikimedia.org/wiki/User:Avatar/example-png-thumbnail
Comment 1 Leon Weber 2006-06-15 12:38:46 UTC
*** Bug 6317 has been marked as a duplicate of this bug. ***
Comment 2 Leon Weber 2006-06-15 12:45:05 UTC
It seems to just happen at a width greater than 99px, I've added an example to
Tim Bartel's test-page for that. I tried to create a thumb of a different image
with thumb.php (as far as I understand the comments in thumb.php it uses the
same engine to create thumbs) which worked with widths >99px.
Comment 3 PS 2006-06-15 14:55:47 UTC
Examples: 
See: http://en.wikipedia.org/wiki/User_talk:FT2#Image_thumbnail_test

The first image is the original PNG, it doesn't show properly. 
The 2nd image is identical, in GIF format, and behaves perfectly.
Comment 4 Leon Weber 2006-06-15 16:05:44 UTC
another test page:
http://meta.wikimedia.org/wiki/User:Avatar/example-png-thumbnail/test2
crazy.
Comment 5 simonell 2006-06-21 22:17:14 UTC
@PS That aren't the same images. One with a description of the colors which the
other doesn't have.
Comment 6 Bill Barry 2006-12-04 08:01:57 UTC
The problem is that a height of -1 is being returned to the browser.
It seems to have been patched in the development trunk, but 
can be superficially fixed by specifying both a width and a height
for the thumb
[[Image:test.png|thumb|180x180px|caption]]
Comment 7 Bawolff (Brian Wolff) 2007-05-07 09:47:30 UTC
I've found lots of png's with the error: "Error creating thumbnail: Invalid
thumbnail parameters"

For example: [[commons:Image:Wikipe-tan Birthday.png]] and older versions of
[[Image:Map showing NWFP and FATA.png]] (the ones sized 6325×7085)

Browser can display these images without a problem for the non-resized version
Comment 8 Hersfold 2007-07-04 04:50:46 UTC
A similar problem is occurring with jpegs as well - instead of the image, the caption is returned as a link to the image. Examples shown here, flagged with that little warning icon thingie.
[http://en.wikipedia.org/wiki/User:Hersfold/Hersfold%27s_Sandbox/Thumb_test]
Main problem, at least with this image, is that it occurs at the default size. I've seen it occur elsewhere, but I just noticed today that someone else is having a similar problem.
Comment 9 Aryeh Gregor (not reading bugmail, please e-mail directly) 2008-07-29 21:07:01 UTC
It's been one year since the last comment here, and I haven't heard widespread complaints about continuing problems.  I'm closing WORKSFORME, reopen if it's still an issue.

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