User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.9a1) Gecko/20060105 SeaMonkey/1.5a Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.9a1) Gecko/20060105 SeaMonkey/1.5a an svgz is a gzipped svg. When served over the web, it is important that the server note that the file is gzip (https://bugzilla.mozilla.org/show_bug.cgi?id=308153). All other things being as they should, firefox will download the svgz, uncompress the content, and display the svg file quite reliably. But when trying to view an svgz file stored locally on your hard drive, firefox will fail to open the file. (A dialog will pop up asking what you want to open it with). Also, while working with files locally: If you create an html file, and try to embed the svgz in it, Mozilla will display the xml parsing error (which is the error displayed when the file hasn't been sent with "Content-encoding: gzip": but it isn't practical for your os to send this encoding). In contrast to all other image formats, I've not found a way to display svgz in mozilla locally. Reproducible: Always Steps to Reproduce: 1. Ask mozilla to open a local svgz file directly, or Ask mozilla to open a local web page containing a local svgz file. 2. 3. Actual Results: Opening fails. Expected Results: Mozilla might display the svg file contained in the svgz.

Through bug 157514 this is bug 52282. *** This bug has been marked as a duplicate of 52282 ***