Which sites are not compressing SVG images

Site www.istitutovolta.eu is the most egregious for image/svg. 77 uncompressed SVG resources totaling 21MB. If these were compressed they would be 4MB - 81% savings

select pages.url, count(*), sum(respBodySize) totBytes
from httparchive:runs.latest_requests as req  
JOIN httparchive:runs.latest_pages as pages on pages.pageid = req.pageid
WHERE NOT REGEXP_MATCH(LOWER(resp_content_encoding), r'gzip|deflate')
and REGEXP_MATCH(LOWER(resp_content_type),r'(svg)') 
GROUP BY pages.url
ORDER BY totBytes desc;
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