diff --git a/create-screenshot-thumbnails.js b/create-screenshot-thumbnails.js
new file mode 100644
index 00000000..3cf1f5dd
--- /dev/null
+++ b/create-screenshot-thumbnails.js
@@ -0,0 +1,17 @@
+const fs = require('fs')
+const jimp = require('jimp')
+
+const generateThumbnail = async (inputPath, width, height, outputPath) => {
+  console.log(`Generating ${outputPath}`)
+  const image = await jimp.read(inputPath)
+  image.resize(width, height).write(outputPath)
+}
+
+(async () => {
+  for (const file of await fs.promises.readdir('img/')) {
+    const match = file.match(/^(gw\d+)\.png$/)
+    if (match) {
+      await generateThumbnail(`img/${match[1]}.png`, 315, 239, `img/${match[1]}web_thumb.png`)
+    }
+  }
+})().catch(console.log)
diff --git a/img/gw1.png b/img/gw1.png
index 4fde4359..0a03548f 100644
Binary files a/img/gw1.png and b/img/gw1.png differ
diff --git a/img/gw1web_thumb.png b/img/gw1web_thumb.png
index 0c1cd418..b7b2597d 100644
Binary files a/img/gw1web_thumb.png and b/img/gw1web_thumb.png differ
diff --git a/img/gw2.png b/img/gw2.png
index 8d02c8a9..b40dee76 100644
Binary files a/img/gw2.png and b/img/gw2.png differ
diff --git a/img/gw2web_thumb.png b/img/gw2web_thumb.png
index f502eba4..32cd3824 100644
Binary files a/img/gw2web_thumb.png and b/img/gw2web_thumb.png differ
diff --git a/img/gw3.png b/img/gw3.png
index df7371a1..cda5f40b 100644
Binary files a/img/gw3.png and b/img/gw3.png differ
diff --git a/img/gw3web_thumb.png b/img/gw3web_thumb.png
index 92f6f93a..86e5f414 100644
Binary files a/img/gw3web_thumb.png and b/img/gw3web_thumb.png differ
diff --git a/package-lock.json b/package-lock.json
index 93e3a9c9..bc909976 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,378 @@
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   "requires": true,
   "dependencies": {
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+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.16.3.tgz",
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+      "dev": true,
+      "requires": {
+        "regenerator-runtime": "^0.13.4"
+      }
+    },
+    "@jimp/bmp": {
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@jimp/bmp/-/bmp-0.16.1.tgz",
+      "integrity": "sha512-iwyNYQeBawrdg/f24x3pQ5rEx+/GwjZcCXd3Kgc+ZUd+Ivia7sIqBsOnDaMZdKCBPlfW364ekexnlOqyVa0NWg==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.7.2",
+        "@jimp/utils": "^0.16.1",
+        "bmp-js": "^0.1.0"
+      }
+    },
+    "@jimp/core": {
+      "version": "0.16.1",
+      "resolved": "https://registry.npmjs.org/@jimp/core/-/core-0.16.1.tgz",
+      "integrity": "sha512-la7kQia31V6kQ4q1kI/uLimu8FXx7imWVajDGtwUG8fzePLWDFJyZl0fdIXVCL1JW2nBcRHidUot6jvlRDi2+g==",
+      "dev": true,
+      "requires": {
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+        "@jimp/utils": "^0.16.1",
+        "any-base": "^1.1.0",
+        "buffer": "^5.2.0",
+        "exif-parser": "^0.1.12",
+        "file-type": "^9.0.0",
+        "load-bmfont": "^1.3.1",
+        "mkdirp": "^0.5.1",
+        "phin": "^2.9.1",
+        "pixelmatch": "^4.0.2",
+        "tinycolor2": "^1.4.1"
+      },
+      "dependencies": {
+        "mkdirp": {
+          "version": "0.5.5",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+          "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+          "dev": true,
+          "requires": {
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+          }
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+      "requires": {
+        "global": "~4.4.0",
+        "is-function": "^1.0.1",
+        "parse-headers": "^2.0.0",
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+      "integrity": "sha1-qQKekp09vN7RafPG4oI42VpdWig=",
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+        "sax": ">=0.6.0",
+        "xmlbuilder": "~11.0.0"
+      }
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+      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-11.0.1.tgz",
+      "integrity": "sha512-fDlsI/kFEx7gLvbecc0/ohLG50fugQp8ryHzMTuW9vSa1GJ0XYWKnhsUx7oie3G98+r56aTQIUB4kht42R3JvA==",
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diff --git a/package.json b/package.json
index 5414a565..59e9d80f 100644
--- a/package.json
+++ b/package.json
@@ -30,5 +30,8 @@
   },
   "engines": {
     "node": ">=0.8.0"
+  },
+  "devDependencies": {
+    "jimp": "^0.16.1"
   }
 }