diff --git a/app/Http/Controllers/Abstracts/AbstractBuildingsController.php b/app/Http/Controllers/Abstracts/AbstractBuildingsController.php
index 08cc0c0e..6df7e880 100644
--- a/app/Http/Controllers/Abstracts/AbstractBuildingsController.php
+++ b/app/Http/Controllers/Abstracts/AbstractBuildingsController.php
@@ -146,6 +146,15 @@ public function indexPageParams(Request $request, PlayerService $player): array
             $build_queue_max = true;
         }
 
+        // If openTech is in querystring, add client JS to open the technology tab.
+        $open_tech_id = 0;
+        if ($request->query->has('openTech')) {
+            $open_tech_id = $request->query('openTech');
+            if (!is_numeric($open_tech_id)) {
+                $open_tech_id = 0;
+            }
+        }
+
         return [
             'planet_id' => $this->planet->getPlanetId(),
             'planet_name' => $this->planet->getPlanetName(),
@@ -155,6 +164,7 @@ public function indexPageParams(Request $request, PlayerService $player): array
             'build_active' => $build_active,
             'build_queue' => $build_queue,
             'build_queue_max' => $build_queue_max,
+            'open_tech_id' => $open_tech_id,
         ];
     }
 
diff --git a/app/Http/Controllers/Abstracts/AbstractUnitsController.php b/app/Http/Controllers/Abstracts/AbstractUnitsController.php
index 31ad9e79..367e888e 100644
--- a/app/Http/Controllers/Abstracts/AbstractUnitsController.php
+++ b/app/Http/Controllers/Abstracts/AbstractUnitsController.php
@@ -107,6 +107,15 @@ public function indexPage(Request $request, PlayerService $player): array
             }
         }
 
+        // If openTech is in querystring, add client JS to open the technology tab.
+        $open_tech_id = 0;
+        if ($request->query->has('openTech')) {
+            $open_tech_id = $request->query('openTech');
+            if (!is_numeric($open_tech_id)) {
+                $open_tech_id = 0;
+            }
+        }
+
         return [
             'planet_id' => $planet->getPlanetId(),
             'planet_name' => $planet->getPlanetName(),
@@ -114,6 +123,7 @@ public function indexPage(Request $request, PlayerService $player): array
             'build_active' => $build_active,
             'build_queue' => $build_queue,
             'build_queue_countdown' => $queue_time_countdown,
+            'open_tech_id' => $open_tech_id,
         ];
     }
 
diff --git a/app/Http/Controllers/ResearchController.php b/app/Http/Controllers/ResearchController.php
index 10c36591..f622aa69 100644
--- a/app/Http/Controllers/ResearchController.php
+++ b/app/Http/Controllers/ResearchController.php
@@ -45,11 +45,12 @@ public function __construct(ResearchQueueService $queue)
     /**
      * Shows the research index page
      *
+     * @param Request $request
      * @param PlayerService $player
      * @return View
      * @throws Exception
      */
-    public function index(PlayerService $player): View
+    public function index(Request $request, PlayerService $player): View
     {
         $this->setBodyId('research');
         $planet = $player->planets->current();
@@ -108,6 +109,15 @@ public function index(PlayerService $player): View
             $build_queue_max = true;
         }
 
+        // If openTech is in querystring, add client JS to open the technology tab.
+        $open_tech_id = 0;
+        if ($request->query->has('openTech')) {
+            $open_tech_id = $request->query('openTech');
+            if (!is_numeric($open_tech_id)) {
+                $open_tech_id = 0;
+            }
+        }
+
         return view('ingame.research.index')->with([
             'planet_id' => $planet->getPlanetId(),
             'planet_name' => $planet->getPlanetName(),
@@ -116,6 +126,7 @@ public function index(PlayerService $player): View
             'build_queue' => $research_queue,
             'build_queue_max' => $build_queue_max,
             'research_lab_upgrading' => $research_lab_upgrading,
+            'open_tech_id' => $open_tech_id,
         ]);
     }
 
diff --git a/resources/views/ingame/defense/index.blade.php b/resources/views/ingame/defense/index.blade.php
index 8c1dfb77..c5466220 100644
--- a/resources/views/ingame/defense/index.blade.php
+++ b/resources/views/ingame/defense/index.blade.php
@@ -72,4 +72,6 @@
             technologyDetails.init()
         </script>
     </div>
+    {{-- openTech querystring parameter handling --}}
+    @include ('ingame.shared.technology.open-tech', ['open_tech_id' => $open_tech_id])
 @endsection
diff --git a/resources/views/ingame/facilities/index.blade.php b/resources/views/ingame/facilities/index.blade.php
index bbdb8abd..94e33a9c 100644
--- a/resources/views/ingame/facilities/index.blade.php
+++ b/resources/views/ingame/facilities/index.blade.php
@@ -135,4 +135,6 @@ class="upgrade tooltip hideOthers js_hideTipOnMobile"
             technologyDetails.init()
         </script>
     </div>
+    {{-- openTech querystring parameter handling --}}
+    @include ('ingame.shared.technology.open-tech', ['open_tech_id' => $open_tech_id])
 @endsection
diff --git a/resources/views/ingame/research/index.blade.php b/resources/views/ingame/research/index.blade.php
index 1c2fd739..ba359e94 100644
--- a/resources/views/ingame/research/index.blade.php
+++ b/resources/views/ingame/research/index.blade.php
@@ -106,7 +106,8 @@
                 loca: loca
             })
             technologyDetails.init()
-
         </script>
     </div>
+    {{-- openTech querystring parameter handling --}}
+    @include ('ingame.shared.technology.open-tech', ['open_tech_id' => $open_tech_id])
 @endsection
diff --git a/resources/views/ingame/resources/index.blade.php b/resources/views/ingame/resources/index.blade.php
index e727a9f8..e2cfa837 100644
--- a/resources/views/ingame/resources/index.blade.php
+++ b/resources/views/ingame/resources/index.blade.php
@@ -152,4 +152,6 @@ class="productionboxshipyard injectedComponent parent supplies">
             technologyDetails.init()
         </script>
     </div>
+    {{-- openTech querystring parameter handling --}}
+    @include ('ingame.shared.technology.open-tech', ['open_tech_id' => $open_tech_id])
 @endsection
diff --git a/resources/views/ingame/shared/technology/open-tech.blade.php b/resources/views/ingame/shared/technology/open-tech.blade.php
new file mode 100644
index 00000000..c55530f6
--- /dev/null
+++ b/resources/views/ingame/shared/technology/open-tech.blade.php
@@ -0,0 +1,6 @@
+@php /** @var int $open_tech_id */ @endphp
+@if ($open_tech_id > 0)
+<script type="text/javascript">
+        $('.technology.hasDetails:not(.showsDetails)[data-technology="{{ $open_tech_id }}"] .icon').click();
+</script>
+@endif
diff --git a/resources/views/ingame/shipyard/index.blade.php b/resources/views/ingame/shipyard/index.blade.php
index ff55386e..00c5bb55 100644
--- a/resources/views/ingame/shipyard/index.blade.php
+++ b/resources/views/ingame/shipyard/index.blade.php
@@ -83,4 +83,6 @@
             technologyDetails.init()
         </script>
     </div>
+    {{-- openTech querystring parameter handling --}}
+    @include ('ingame.shared.technology.open-tech', ['open_tech_id' => $open_tech_id])
 @endsection