=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Server: nginx
Date: Sat, 04 Dec 2021 04:19:45 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 44442
Connection: close
Vary: Accept-Encoding
Vary: Cookie
Cache-Control: max-age=15, must-revalidate
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
Content-Language: en
Content-Security-Policy: frame-ancestors 'none'; img-src 'self' https://addons-static.operacdn.com https://addons-media.operacdn.com data: https://secure.gravatar.com https://www.gravatar.com https://i1.wp.com https://i.ytimg.com https://i.vimeocdn.com https://www.google-analytics.com https://forums.opera.com; media-src https://addons-media.operacdn.com/media/; script-src 'self' https://addons-static.operacdn.com https://addons-media.operacdn.com 'report-sample' https://www.google-analytics.com 'nonce-48UXVDnHzeSiRJZu'; block-all-mixed-content; worker-src 'none'; base-uri 'self'; frame-src https://www.youtube.com https://player.vimeo.com https://vimeo.com; default-src 'none'; form-action 'self' https://forums.opera.com; connect-src 'self' https://addons-static.operacdn.com https://addons-media.operacdn.com https://sentry.opera-api.com https://www.google-analytics.com https://www.opera.com https://forums.opera.com; font-src 'self' https://addons-static.operacdn.com https://addons-media.operacdn.com https://fonts.gstatic.com; style-src 'self' https://addons-static.operacdn.com https://addons-media.operacdn.com; report-uri https://sentry.opera-api.com/api/170/security/?sentry_key=0225273e93de40fb9811cb4f200c5ca1
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Strict-Transport-Security: max-age=31536000; includeSubDomains

Request headers
================
HEAD /en/extensions/details/youtube-lyrics-by-rob-w/ HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: addons.opera.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.