Available (once published) here: http://zope.org/Members/bowerymarc/ImageTag_CorePatch/0.3 Changes since last release: * Version 0.3 * added ANTIALIAS to thumbnail generation (needs PIL 1.1.3 or later) * convert image to RGBA (previously RGB) before thumbnail (preserve transparency) * based tag() code on Image version 1.148, with additional fields from Plones's imagePatch.py (args are tag(height, width, alt, scale, xscale, yscale, css_class, title, longdesc), and if border is not specified, then it's set to 0. Remove any other empty/unused attributes. * added method Image.pil_tag() with the exact same syntax as tag(), in case tag is further overridden (as Plone does, evidently) README: HotPatch Image.tag to use PIL to size images (useful for thumbnails). Also fixes so-called intelligent scaling to actually be intelligent. Here's an example of using the new thumb method directly: <img src="" tal:on-error="structure string:<img src='${img/absolute_url}' alt='${here/title}' align=${alignment} hspace=${hs} vspace=${vs} border=${brd}) />" tal:attributes="src string:${img/absolute_url}/thumb?width=100&imtype=PNG; align alignment; hspace hs; vspace vs; border brd"/> What that does is try to use thumb, and if it doesn't work fall back to rendering the image normally. It also shows usage of some of the extended properties. Since only width is specified the image will be proportionally resized (same applies for height only), and the imtype converts it to PING (check PIL docs, but the most useful types are JPEG, GIF, PNG), which preserves any transparency (alpha) the image might have. Here's an example of using tag with PIL resizing: <span tal:replace="structure python:img.tag(width=200) /> or <span tal:replace="structure python:img.pil_tag(width=200) /> Note that this patch adds 'pil_tag' which you can test for if you're not sure tag() has been re-patched (evidently Plone does this)