diff --git a/package.json b/package.json
index 62b1f13429..0ad3c33bca 100644
--- a/package.json
+++ b/package.json
@@ -65,6 +65,7 @@
     "matrix-js-sdk": "matrix-org/matrix-js-sdk#develop",
     "matrix-react-sdk": "matrix-org/matrix-react-sdk#develop",
     "modernizr": "^3.1.0",
+    "pako": "^1.0.5",
     "q": "^1.4.1",
     "react": "^15.4.0",
     "react-dnd": "^2.1.4",
diff --git a/src/vector/submit-rageshake.js b/src/vector/submit-rageshake.js
index 6ed49a1f5e..ef6fbabe29 100644
--- a/src/vector/submit-rageshake.js
+++ b/src/vector/submit-rageshake.js
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+import pako from 'pako';
 import q from "q";
 
 import PlatformPeg from 'matrix-react-sdk/lib/PlatformPeg';
@@ -78,7 +79,10 @@ export default async function sendBugReport(bugReportEndpoint, opts) {
             // encode as UTF-8
             const buf = new TextEncoder().encode(entry.lines);
 
-            body.append('log', new Blob([buf]), entry.id);
+            // compress
+            const compressed = pako.gzip(buf);
+
+            body.append('compressed-log', new Blob([compressed]), entry.id);
         }
     }