Adding new compressible prefixes (#1092)v1.30.0

* Adding "image/svg" as compressible prefix

* Adding additional compressible prefixes from https://support.cloudflare.com/hc/en-us/articles/200168396-What-will-Cloudflare-compress-

1 files changed, 5 insertions, 1 deletions

diff --git a/header.go b/header.go
index 0eb4b7b..73e9844 100644
--- a/header.go
+++ b/header.go
@@ -271,7 +271,11 @@ func (h *RequestHeader) SetContentLength(contentLength int) {
 func (h *ResponseHeader) isCompressibleContentType() bool {
 	contentType := h.ContentType()
 	return bytes.HasPrefix(contentType, strTextSlash) ||
-		bytes.HasPrefix(contentType, strApplicationSlash)
+			bytes.HasPrefix(contentType, strApplicationSlash) ||
+			bytes.HasPrefix(contentType, strImageSVG) ||
+			bytes.HasPrefix(contentType, strImageIcon) ||
+			bytes.HasPrefix(contentType, strFontSlash) ||
+			bytes.HasPrefix(contentType, strMultipartSlash)
 }
 
 // ContentType returns Content-Type header value.