Uploading images whose dimensions are greater than the maximum size allowed fail to generate thumbnails and no error/failure message is displayed.
|Reported by:||DRGDC||Owned by:|
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.
I think the default limit should be raised, but that would be a feature request. This ticket is to have error messages displayed.
Change History (12)
- Component changed from Administration to Upload
- Milestone set to 2.9
- Owner anonymous deleted