diff --git a/server.js b/server.js
index 6de49e94b56a0..0cba5f2323e79 100644
--- a/server.js
+++ b/server.js
@@ -3906,6 +3906,71 @@ cache(function(data, match, sendBadge, request) {
   });
 }));
 
+// GitHub languages integration.
+camp.route(/^\/github\/languages\/(top|count|code-size)\/([^\/]+)\/([^\/]+)\.(svg|png|gif|jpg|json)$/,
+cache(function(data, match, sendBadge, request) {
+  var type = match[1];
+  var user = match[2];
+  var repo = match[3];
+  var format = match[4];
+  var apiUrl = githubApiUrl + '/repos/' + user + '/' + repo + '/languages';
+  var badgeData = getBadgeData('', data);
+  if (badgeData.template === 'social') {
+    badgeData.logo = getLogo('github', data);
+  }
+  githubAuth.request(request, apiUrl, {}, function(err, res, buffer) {
+    if (err != null) {
+      badgeData.text[1] = 'inaccessible';
+      sendBadge(format, badgeData);
+      return;
+    }
+    try {
+      const parsedData = JSON.parse(buffer);
+      var sumBytes = 0;
+      switch(type) {
+        case 'top':
+          var topLanguage = 'language';
+          var maxBytes = 0;
+          for (const language of Object.keys(parsedData)) {
+            const bytes = parseInt(parsedData[language]);
+            if (bytes >= maxBytes) {
+              maxBytes = bytes;
+              topLanguage = language;
+            }
+            sumBytes += bytes;
+          }
+          badgeData.text[0] = topLanguage;
+          if (sumBytes === 0) { // eg, empty repo, only .md files, etc.
+            badgeData.text[1] = 'none';
+            badgeData.colorscheme = 'blue';
+          } else {
+            badgeData.text[1] = (maxBytes / sumBytes * 100).toFixed(1) + '%'; // eg, 9.1%
+          }
+          break;
+        case 'count':
+          badgeData.text[0] = 'languages';
+          badgeData.text[1] = Object.keys(parsedData).length;
+          badgeData.colorscheme = 'blue';
+          break;
+        case 'code-size':
+          for (const language of Object.keys(parsedData)) {
+            sumBytes += parseInt(parsedData[language]);
+          }
+          badgeData.text[0] = 'code size';
+          badgeData.text[1] = prettyBytes(sumBytes);
+          badgeData.colorscheme = 'blue';
+          break;
+        default:
+          throw Error('Unreachable due to regex');
+      }
+      sendBadge(format, badgeData);
+    } catch(e) {
+      badgeData.text[1] = 'invalid';
+      sendBadge(format, badgeData);
+    }
+  });
+}));
+
 // Bitbucket issues integration.
 camp.route(/^\/bitbucket\/issues(-raw)?\/([^\/]+)\/([^\/]+)\.(svg|png|gif|jpg|json)$/,
 cache(function(data, match, sendBadge, request) {
diff --git a/service-tests/github.js b/service-tests/github.js
index 535af892011fb..bd3c778c0b493 100644
--- a/service-tests/github.js
+++ b/service-tests/github.js
@@ -447,3 +447,28 @@ t.create('github pull request check state')
 t.create('github pull request check contexts')
   .get('/status/contexts/pulls/badges/shields/1110.json')
   .expectJSONTypes(Joi.object().keys({ name: 'checks', value: '1 failure' }));
+
+t.create('top language')
+.get('/languages/top/badges/shields.json')
+.expectJSONTypes(Joi.object().keys({
+  name: Joi.equal('JavaScript'),
+  value: Joi.string().regex(/^([1-9]?[0-9]\.[0-9]|100\.0)%$/),
+}));
+
+t.create('top language with empty repository')
+.get('/languages/top/pyvesb/emptyrepo.json')
+.expectJSON({ name: 'language', value: 'none' });
+
+t.create('language count')
+.get('/languages/count/badges/shields.json')
+.expectJSONTypes(Joi.object().keys({
+  name: Joi.equal('languages'),
+  value: Joi.number().integer().positive(),
+}));
+
+t.create('code size in bytes for all languages')
+.get('/languages/code-size/badges/shields.json')
+.expectJSONTypes(Joi.object().keys({
+  name: Joi.equal('code size'),
+  value: isFileSize,
+}));
diff --git a/try.html b/try.html
index a551cf155368d..e790bf73b1525 100644
--- a/try.html
+++ b/try.html
@@ -955,6 +955,18 @@ <h3 id="miscellaneous"> Miscellaneous </h3>
     <td><img src='/github/last-commit/google/skia/infra/config.svg' alt=''/></td>
     <td><code>https://img.shields.io/github/commits/google/skia/infra/config/last.svg</code></td>
   </tr>
+  <tr><th data-keywords='GitHub top language' data-doc='githubDoc'> GitHub top language: </th>
+    <td><img src='/github/languages/top/badges/shields.svg' alt=''/></td>
+    <td><code>https://img.shields.io/github/languages/top/badges/shields.svg</code></td>
+  </tr>
+  <tr><th data-keywords='GitHub language count' data-doc='githubDoc'> GitHub language count: </th>
+    <td><img src='/github/languages/count/badges/shields.svg' alt=''/></td>
+    <td><code>https://img.shields.io/github/languages/count/badges/shields.svg</code></td>
+  </tr>
+  <tr><th data-keywords='GitHub byte code size' data-doc='githubDoc'> GitHub code size in bytes: </th>
+    <td><img src='/github/languages/code-size/badges/shields.svg' alt=''/></td>
+    <td><code>https://img.shields.io/github/languages/code-size/badges/shields.svg</code></td>
+  </tr>
   <tr><th> Bitbucket issues: </th>
     <td><img src='/bitbucket/issues/atlassian/python-bitbucket.svg' alt=''/></td>
     <td><code>https://img.shields.io/bitbucket/issues/atlassian/python-bitbucket.svg</code></td>