use webp for thumbnails

src/assets/content/ChartGrid.js

@@ -7,7 +7,7 @@ export default {
             project: 'Findex',
             vizKey: 'ThreatSankey',
             vizRoute: 'inland-fish-total-threats',
-            img_src: 'Placeholder_thumbnail.PNG',
+            img_src: 'Placeholder_thumbnail.webp',
             alt: '',
             chartOrder: 1,
             description: 'Land use change is threatening inland fisheries.'
@@ -17,7 +17,7 @@ export default {
             project: 'Fire in Ice',
             vizKey: 'GlacierScan',
             vizRoute: 'glacier-scan',
-            img_src: 'glacial_mri_thumbnail.png',
+            img_src: 'glacial_mri_thumbnail.webp',
             alt: '',
             chartOrder: 1,
             description: 'Glacier ice records change.'
@@ -27,7 +27,7 @@ export default {
             project: 'Fire in Ice',
             vizKey: 'WildfireAerosols',
             vizRoute: 'wildfire-aerosols',
-            img_src: 'wildfire_aerosols_thumbnail.png',
+            img_src: 'wildfire_aerosols_thumbnail.webp',
             alt: '',
             chartOrder: 2,
             description: 'Wildfire aerosols are preserved in glaciers.'
@@ -37,7 +37,7 @@ export default {
             project: 'Fire in Ice',
             vizKey: 'RegionalFires',
             vizRoute: 'regional-fires',
-            img_src: 'aerosols_map_thumbnail.png',
+            img_src: 'aerosols_map_thumbnail.webp',
             alt: '',
             chartOrder: 2,
             description: 'Smoke plumes from regional wildfires affect glaciers.'
@@ -47,7 +47,7 @@ export default {
             project: 'Fish as Food',
             vizKey: 'FishAsFoodCirclePacking',
             vizRoute: 'inland-rec-fish-value',
-            img_src: 'circle-pack-thumbnail.png',
+            img_src: 'circle-pack-thumbnail.webp',
             alt: '',
             chartOrder: 2,
             description: 'Inland recreational fishing contributes economic value.'
@@ -57,7 +57,7 @@ export default {
             project: 'Fish as Food',
             vizKey: 'FishAsFoodSankey',
             vizRoute: 'inland-rec-fish-harvest',
-            img_src: 'FishAsFoodSankey_thumbnail.png',
+            img_src: 'FishAsFoodSankey_thumbnail.webp',
             alt: '',
             chartOrder: 1,
             description: 'Inland recreational fishing harvest is substantial.'
@@ -67,7 +67,7 @@ export default {
             project: 'Beaufort Sea',
             vizKey: 'BeaufortSeaCore',
             vizRoute: 'beaufort-sea-sediment-coring',
-            img_src: 'BeaufortSeaCore_thumbnail.PNG',
+            img_src: 'BeaufortSeaCore_thumbnail.webp',
             alt: '',
             chartOrder: 1,
             description: 'Sediment cores can help build past and present climates.'
@@ -77,7 +77,7 @@ export default {
             project: 'Beaufort Sea',
             vizKey: 'BeaufortSeaSpecies',
             vizRoute: 'beaufort-sea-species',
-            img_src: 'BeaufortSeaSpecies_thumbnail.png',
+            img_src: 'BeaufortSeaSpecies_thumbnail.webp',
             alt: '',
             chartOrder: 2,
             description: 'Microfossils show that Arctic waters are changing.'
@@ -87,7 +87,7 @@ export default {
             project: 'Beaufort Sea',
             vizKey: 'BeaufortSeaTimeline',
             vizRoute: 'beaufort-sea-timeline',
-            img_src: 'BeaufortSeaTimeline_thumbnail.PNG',
+            img_src: 'BeaufortSeaTimeline_thumbnail.webp',
             alt: '',
             chartOrder: 3,
             description: 'Microfossil records help reconstruct past climates.'