diff --git a/aio/scripts/contributors/validate-data.js b/aio/scripts/contributors/validate-data.js
new file mode 100644
index 0000000000..895e880c26
--- /dev/null
+++ b/aio/scripts/contributors/validate-data.js
@@ -0,0 +1,79 @@
+#!/usr/bin/env node
+
+// Imports
+const {readdirSync, readFileSync, statSync} = require('fs');
+const {join, resolve} = require('path');
+
+// Constants
+const MAX_IMAGE_SIZE = 30 * 1024;  // 30kb
+const CONTENT_DIR = resolve(__dirname, '../../content');
+const IMAGES_DIR = join(CONTENT_DIR, 'images/bios');
+const CONTRIBUTORS_PATH = join(CONTENT_DIR, 'marketing/contributors.json');
+const EXISTING_GROUPS = new Set(['Angular', 'GDE', 'Collaborators']);
+
+// Run
+_main();
+
+// Functions - Definitions
+function _main() {
+  const contributors = JSON.parse(readFileSync(CONTRIBUTORS_PATH, 'utf8'));
+  const expectedImages = Object.keys(contributors)
+      .filter(key => !!contributors[key].picture)
+      .map(key => join(IMAGES_DIR, contributors[key].picture));
+  const existingImages = readdirSync(IMAGES_DIR)
+      .filter(name => name !== '_no-one.jpg')
+      .map(name => join(IMAGES_DIR, name));
+
+  // Check that there are no missing images.
+  const missingImages = expectedImages.filter(path => !existingImages.includes(path));
+  if (missingImages.length > 0) {
+    throw new Error(
+        'The following pictures are referenced in \'contributors.json\' but do not exist:' +
+        missingImages.map(path => `\n  - ${path}`).join(''));
+  }
+
+  // Check that there are no unused images.
+  const unusedImages = existingImages.filter(path => !expectedImages.includes(path));
+  if (unusedImages.length > 0) {
+    throw new Error(
+        'The following pictures are not referenced in \'contributors.json\' and should be deleted:' +
+        unusedImages.map(path => `\n  - ${path}`).join(''));
+  }
+
+  // Check that there are no images that exceed the size limit.
+  const tooLargeImages = expectedImages.filter(path => statSync(path).size > MAX_IMAGE_SIZE);
+  if (tooLargeImages.length > 0) {
+    throw new Error(
+        `The following pictures exceed maximum size limit of ${MAX_IMAGE_SIZE / 1024}kb:` +
+        tooLargeImages.map(path => `\n  - ${path}`).join(''));
+  }
+
+  // Verify that all keys are sorted alphabetically
+  const keys = Object.keys(contributors);
+  for (let i = 1; i < keys.length; i++) {
+    if (keys[i - 1].toLowerCase() > keys[i].toLowerCase()) {
+      throw new Error(
+        `The following keys in 'contributors.json' are not in alphabetical order: '${keys[i - 1]}' and '${keys[i]}'.`
+      );
+    }
+  }
+
+  Object.entries(contributors).forEach(([key, entry]) => {
+    // Make sure `lead` and `mentor` fields refer to existing entries
+    if (entry.lead && !contributors[entry.lead]) {
+      throw new Error(`The '${key}' entry contains 'lead' field, but it refers to non-existing entry ('${entry.lead}').`);
+    }
+    if (entry.mentor && !contributors[entry.mentor]) {
+      throw new Error(`The '${key}' entry contains 'mentor' field, but it refers to non-existing entry ('${entry.mentor}').`);
+    }
+
+    // Verify that `groups` field is always present and contains existing groups
+    if (!entry.groups || !Array.isArray(entry.groups) || entry.groups.length === 0) {
+      throw new Error(`The 'groups' field should be defined as a non-empty array (entry: '${key}').`);
+    }
+    if (entry.groups.some(group => !EXISTING_GROUPS.has(group))) {
+      throw new Error(`The '${key}' entry contains 'groups' field with unknown values ` +
+        `(groups: ${JSON.stringify(entry.groups)}, known values: ${JSON.stringify(Array.from(EXISTING_GROUPS))}).`);
+    }
+  });
+}