javascript - gzip compression is not detected by PageSpeed Insights (node.js) -

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i build gzip-files gulp (gulp-gzip) , use them npm package connect-gzip-static:

var app = express();  var servestatic = require('connect-gzip-static');    //...    app.use(servestatic(__dirname)).listen(3000);

however, pagespeed insights not detect gzip compression.

but google chrome developer console says: response headers: content-encoding: gzip. other seo testing tools detecting gzip. why google doesen't ?

i gziped html, js, css. should gzip svg's ? thanks!

pagespeed insights should tell resources not gzipped.

often third party resources out of control, or may types svg have not enabled yet.

pagespeed insights should taken guide , not gospel. it's easy become hung on it. if ignore bigger reasons site slow save few bytes on 1 resource.


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