diff --git a/frontend/javascripts/test/puppeteer/dataset_rendering.screenshot.ts b/frontend/javascripts/test/puppeteer/dataset_rendering.screenshot.ts
index fd7c50b142..53578558ec 100644
--- a/frontend/javascripts/test/puppeteer/dataset_rendering.screenshot.ts
+++ b/frontend/javascripts/test/puppeteer/dataset_rendering.screenshot.ts
@@ -1,3 +1,4 @@
+import urljoin from "url-join";
 import "test/mocks/lz4";
 import type { PartialDatasetConfiguration } from "oxalis/store";
 import path from "node:path";
@@ -27,7 +28,7 @@ process.on("unhandledRejection", (err, promise) => {
   console.error("Unhandled rejection (promise: ", promise, ", reason: ", err, ").");
 });
 const BASE_PATH = path.join(__dirname, "../../../../frontend/javascripts/test/screenshots");
-let URL = "https://master.webknossos.xyz";
+let URL = "https://master.webknossos.xyz/";
 
 if (!process.env.URL) {
   console.warn(
@@ -114,7 +115,8 @@ test.before("Retrieve dataset ids", async () => {
       3,
       async () => {
         const options = getDefaultRequestOptions(URL);
-        const url = `${URL}/api/datasets/disambiguate/sample_organization/${datasetName}/toId`;
+        const path = `/api/datasets/disambiguate/sample_organization/${datasetName}/toId`;
+        const url = urljoin(URL, path);
         const response = await fetch(url, options);
         const { id } = await response.json();
         datasetNameToId[datasetName] = id;
@@ -124,7 +126,7 @@ test.before("Retrieve dataset ids", async () => {
     );
   }
 });
-test("Dataset IDs were retrieved successfully", (t) => {
+test.serial("Dataset IDs were retrieved successfully", (t) => {
   for (const datasetName of datasetNames) {
     t.truthy(datasetNameToId[datasetName], `Dataset ID not found for "${datasetName}"`);
   }
diff --git a/frontend/javascripts/test/screenshots/2017-05-31_mSEM_aniso-test.png b/frontend/javascripts/test/screenshots/2017-05-31_mSEM_aniso-test.png
index 3f4dd0515b..5b52d65ee4 100644
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diff --git a/frontend/javascripts/test/screenshots/2017-05-31_mSEM_scMS109_bk_100um_v01-aniso.png b/frontend/javascripts/test/screenshots/2017-05-31_mSEM_scMS109_bk_100um_v01-aniso.png
index 0413d365f6..a4b5c1d691 100644
Binary files a/frontend/javascripts/test/screenshots/2017-05-31_mSEM_scMS109_bk_100um_v01-aniso.png and b/frontend/javascripts/test/screenshots/2017-05-31_mSEM_scMS109_bk_100um_v01-aniso.png differ
diff --git a/frontend/javascripts/test/screenshots/ROI2017_wkw_fallback.png b/frontend/javascripts/test/screenshots/ROI2017_wkw_fallback.png
index f557a33a00..cdd8beaad7 100644
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diff --git a/frontend/javascripts/test/screenshots/ROI2017_wkw_with_mapping_astrocyte.png b/frontend/javascripts/test/screenshots/ROI2017_wkw_with_mapping_astrocyte.png
index 4d6e62200e..88ae851f92 100644
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diff --git a/frontend/javascripts/test/screenshots/annotation_ROI2017_wkw_fallback_null.png b/frontend/javascripts/test/screenshots/annotation_ROI2017_wkw_fallback_null.png
index 181f6f0278..fa5217d196 100644
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diff --git a/frontend/javascripts/test/screenshots/annotation_ROI2017_wkw_fallback_segmentation.png b/frontend/javascripts/test/screenshots/annotation_ROI2017_wkw_fallback_segmentation.png
index f557a33a00..8e8e39616a 100644
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diff --git a/frontend/javascripts/test/screenshots/connectome_file_test_dataset.png b/frontend/javascripts/test/screenshots/connectome_file_test_dataset.png
index 4a63edc788..19fbbfdef8 100644
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diff --git a/frontend/javascripts/test/screenshots/dsA_2.png b/frontend/javascripts/test/screenshots/dsA_2.png
index 47cca5b10d..7e229aab7e 100644
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diff --git a/frontend/javascripts/test/screenshots/float_test_dataset.png b/frontend/javascripts/test/screenshots/float_test_dataset.png
index 0bb2ecc40b..732c7bbde7 100644
Binary files a/frontend/javascripts/test/screenshots/float_test_dataset.png and b/frontend/javascripts/test/screenshots/float_test_dataset.png differ
diff --git a/frontend/javascripts/test/screenshots/test-agglomerate-file_with_mapping_link.png b/frontend/javascripts/test/screenshots/test-agglomerate-file_with_mapping_link.png
index c3965586ef..d982e12eac 100644
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diff --git a/frontend/javascripts/test/screenshots/test-agglomerate-file_with_meshes_link.png b/frontend/javascripts/test/screenshots/test-agglomerate-file_with_meshes_link.png
index 6d855c88ea..4116a5441f 100644
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