diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/requests/fossil_hr/image/ImageRLEEncoder.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/requests/fossil_hr/image/ImageRLEEncoder.java
new file mode 100644
index 000000000..e867dde17
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/requests/fossil_hr/image/ImageRLEEncoder.java
@@ -0,0 +1,34 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.qhybrid.requests.fossil_hr.image;
+
+import java.io.ByteArrayOutputStream;
+
+public class ImageRLEEncoder {
+    public static byte[] RLEEncode(byte[] data) {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length * 2);
+
+        int lastByte = data[0];
+        int count = 1;
+        byte currentByte = -1;
+
+        for (int i = 1; i < data.length; i++) {
+            currentByte = data[i];
+
+            if (currentByte != lastByte || count >= 255) {
+                bos.write(data[i - 1]);
+                bos.write(count);
+
+                count = 1;
+                lastByte = data[i];
+            } else {
+                count++;
+            }
+        }
+
+        bos.write(currentByte);
+        bos.write(count);
+
+        byte[] result = bos.toByteArray();
+
+        return result;
+    }
+}