=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Date: Sun, 14 Apr 2019 22:11:25 GMT
Server: Apache/2.4.18 (Ubuntu)
Location: https://themeisle.com/plugins/nivo-slider/
Connection: close
Content-Type: text/html; charset=UTF-8

HTTP/2 200 
date: Sun, 14 Apr 2019 22:11:25 GMT
content-type: text/html; charset=UTF-8
vary: Accept-Encoding
server: Pagely-ARES/1.3.25
x-gateway-rate-limit-delayed: 0.24866666666667
link: &lt;https://themeisle.com/wp-json/&gt;; rel=&quot;https://api.w.org/&quot;
link: &lt;https://themeisle.com/?p=6166333&gt;; rel=shortlink
x-gateway-cache-key: 1554284621.673|standard|https|themeisle.com||/plugins/nivo-slider/
x-gateway-cache-status: HIT
x-gateway-skip-cache: 0

Request headers
================
HEAD /plugins/nivo-slider/ HTTP/2
Host: themeisle.com
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: https://itxdesign.com
Connection: close


Link is valid.