[site][m] - improvements to lighthouse score

site/components/Hero.tsx

@@ -2,7 +2,7 @@ import { useRef } from 'react';
 import ButtonLink from './ButtonLink';
 import NewsletterForm from './NewsletterForm';
 import Image from 'next/image';
-import DatahubExampleImg from "@/public/images/showcases/datahub.png"
+import DatahubExampleImg from '@/public/images/showcases/datahub.webp';
 
 const codeLanguage = 'javascript';
 const code = `export default {
@@ -72,9 +72,11 @@ export function Hero() {
                 target="_blank"
                 rel="noopener noreferrer"
               >
-                <img
+                <Image
                   src="/images/datopian_logo.png"
                   alt="Datopian"
+                  width={24}
+                  height={20}
                   className="mx-2 mb-1 h-6 inline bg-black rounded-full"
                 />
                 <span>Datopian</span>
@@ -85,7 +87,12 @@ export function Hero() {
             <div className="relative rounded-2xl bg-[#0A101F]/80 ring-1 ring-white/10 backdrop-blur">
               <div className="absolute -top-px left-20 right-11 h-px bg-gradient-to-r from-sky-300/0 via-sky-300/70 to-sky-300/0" />
               <div className="absolute -bottom-px left-11 right-20 h-px bg-gradient-to-r from-blue-400/0 via-blue-400 to-blue-400/0" />
-                <Image src={DatahubExampleImg} alt="opendata.datahub.io" />
+              <Image
+                height={400}
+                width={600}
+                src={DatahubExampleImg}
+                alt="opendata.datahub.io"
+              />
             </div>
           </div>
         </div>

site/components/NewsletterForm.tsx

@@ -3,10 +3,6 @@ import Script from 'next/script';
 export default function NewsletterForm() {
   return (
     <div>
-      <link
-        rel="stylesheet"
-        href="https://sibforms.com/forms/end-form/build/sib-styles.css"
-      />
       <div
         id="sib-form-container"
         className="mt-8 sm:mx-auto sm:text-center lg:text-left lg:mx-0"
@@ -119,6 +115,7 @@ export default function NewsletterForm() {
         }}
       />
       <Script
+        strategy="worker"
         id="newsletter-submit-form"
         src="https://sibforms.com/forms/end-form/build/main.js"
       />

site/components/Showcases.tsx

@@ -5,26 +5,26 @@ const items = [
   {
     title: 'Open Data Northern Ireland',
     href: 'https://www.opendatani.gov.uk/',
-    image: '/images/showcases/odni.png',
+    image: '/images/showcases/odni.webp',
     description: 'Government Open Data Portal',
   },
   {
     title: 'Birmingham City Observatory',
     href: 'https://www.cityobservatory.birmingham.gov.uk/',
-    image: '/images/showcases/birmingham.png',
+    image: '/images/showcases/birmingham.webp',
     description: 'Government Open Data Portal',
   },
   {
     title: 'UAE Open Data',
     href: 'https://opendata.fcsc.gov.ae/',
-    image: '/images/showcases/uae.png',
+    image: '/images/showcases/uae.webp',
     description: 'Government Open Data Portal',
     sourceUrl: 'https://github.com/FCSCOpendata/frontend',
   },
   {
     title: 'Datahub Open Data',
     href: 'https://opendata.datahub.io/',
-    image: '/images/showcases/datahub.png',
+    image: '/images/showcases/datahub.webp',
     description: 'Demo Data Portal by DataHub',
   },
 ];