RE: [EXTERNAL] Re: SVGZ support - why isn't there any?

Understand, however, I’m referring to SVGZ files (or SVG in general) that doesn’t go through a web server, so there is no html header involved.  The SVGZ file sits on the file system, and the user double clicks on the file (or selects open with <browser), or drags the SVGZ file into the browser GUI).  That’s the FILE: protocol, as apposed to the HTTP: protocol.

Thomas Smailus, Ph.D.,  P.E., F.NSPE
Boeing Information Technology
Mobile: 425/553-8342

From: Stanisław Jeśmanowicz <>
Sent: Friday, October 20, 2023 8:39
Subject: [EXTERNAL] Re: SVGZ support - why isn't there any?

EXT email: be mindful of links/attachments.

Hello Thomas,

If your question only refers to web browsers, I have been using compressed SVGZ files for a long time.

Before sending SVGZ file like foo.svgz I send html headers:
 Content-Encoding: gzip
 Content-type: image/svg+xml

And in.htaccess add (appache server case):
 AddEncoding gzip svgz

Stanisl Jesmanowicz
On 10/20/23 01:19, Smailus (US), Thomas O wrote:
In a case of, why way does this now not work?  I’m wondering why now (for some years) none of the main web browser engines (which are the defacto SVG display engines) do not support SVGZ, the compressed SVG format?

Is this a case of not seeing there are indeed use cases they are ignoring, or a case of the developers not being cognizant of the state of SVG usage outside of web server delivered content?

There is a real need for supporting SVGZ from FILE: protocol, as a lot of SVG graphics are stored on file systems and accessed locally without any service or web server involvement.

Thomas Smailus, Ph.D., P.E., F.NSPE
Senior Advanced Information Technologist
Boeing Information Technology
SVG Forum CoP Lead | Intelligent Graphics SVG Lead
EO&T LEAP - 2011 / BR&T HIPO - Cadre 1
The Boeing Company; P.O. Box 3707 MC 2H-52; Seattle, WA 98124-2207
Email:<>       Tel: 425/373-2850        Fax: 425/865-5791



Stanislaw Jesmanowicz, mail: stan <at> decotype <dot> com

Received on Friday, 20 October 2023 15:42:33 UTC