[wp-trac] [WordPress Trac] #8754: Uploading images whose dimensions
are
greater than the maximum size allowed fail to generate thumbnails
and no error/failure message is displayed.
WordPress Trac
wp-trac at lists.automattic.com
Tue Dec 30 02:50:10 GMT 2008
#8754: Uploading images whose dimensions are greater than the maximum size allowed
fail to generate thumbnails and no error/failure message is displayed.
----------------------------+-----------------------------------------------
Reporter: DRGDC | Owner: anonymous
Type: defect (bug) | Status: new
Priority: normal | Milestone:
Component: Administration | Version: 2.7
Severity: normal | Keywords: image, photo, thumbnail, dimension, size, limit, upload
----------------------------+-----------------------------------------------
The process of uploading images that have dimensions (physical size)
greater than the maximum size allowed by the global setting will fail part
way through the process without an error or failure message being
displayed.
Example: Uploading a JPEG image with a width of 625 pixels and height of
938 pixels. This physical size is greater than the maximum size allowed
by the default WordPress configuration.
When uploading such an image using the "Add an Image" panel the the Flash
uploader will stop with the upload progress bar at 100% and displaying
"Crunching…". The Browser uploader will return a blank "Add an Image"
panel display.
In both cases the images are uploaded to the appropriate directory on the
server and appear when the post's media gallery is refreshed. Thumbnail
images are not generated for these uploads. It appears the failure is
before or during thumbnail generation.
Note: The maximum image dimension allowed for upload is not the same as
the Administration > Setting > Media > Large Size: Max Width and Max
Height settings. In my case these settings are both set at 1024 pixels
(above the size of the image I am working with). It appears this control
panel setting only impacts the HTML image tag attributes for posts, so as
not to break the visual design with images that are wider than a layout
allows.
Now you may ask what is the default maximum dimension for uploaded images.
Unfortunately I cannot find my notes on where exactly the setting is in
the WordPress code (it has no Web GUI access that I am aware of). I had
changed this setting once to work around this problem and hoped 2.7 would
have fixed the issue. It is a pain to track down as the location of this
setting has changed over time as it moved to different files and functions
with each new version of WordPress.
My understanding is that this maximum image dimension setting was set to
prevent images over 3 megapixels from being uploaded since those are
really big and readers shouldn't have to deal with such images. This is
old thinking from before broadband and photo blogs took off.
See: http://lorelle.wordpress.com/2007/03/28/wordpress-thumbnail-size-
limit-hack/
I think the default limit should be raised, but that would be a feature
request. This ticket is to have error messages displayed.
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Ticket URL: <http://trac.wordpress.org/ticket/8754>
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