Preventing not found error (404) responses on dynamically loaded missing images

摘要

A mechanism for determining if images exist before publishing to a web server, and replacing missing images with temporary images for the purpose of providing alternate content while eliminating web server error responses, which prevents needless alerts to site administrators. Upon detecting a modification to a web page, a determination is made as to whether the modification includes a link to an image that does not exist at a location specified by a path in the link to the image. Responsive to a determination that the modification includes a link to an image that does not exist at the location, an image placeholder is created for the image at the location.