diff --git a/tests/wpt/include.ini b/tests/wpt/include.ini
index dcc5a6ae8e7..02c27c44a81 100644
--- a/tests/wpt/include.ini
+++ b/tests/wpt/include.ini
@@ -185,7 +185,7 @@ skip: true
 [import-maps]
   skip: false
 [IndexedDB]
-  skip: true
+  skip: false
 [intersection-observer]
   skip: false
 [js]
diff --git a/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini b/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini
new file mode 100644
index 00000000000..7aae36eab3d
--- /dev/null
+++ b/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini
@@ -0,0 +1,17 @@
+[blob-valid-after-abort.any.sharedworker.html]
+  expected: ERROR
+
+[blob-valid-after-abort.any.worker.html]
+  expected: TIMEOUT
+  [A blob can be read back after the transaction that added it was aborted.]
+    expected: TIMEOUT
+
+
+[blob-valid-after-abort.any.html]
+  expected: TIMEOUT
+  [A blob can be read back after the transaction that added it was aborted.]
+    expected: TIMEOUT
+
+
+[blob-valid-after-abort.any.serviceworker.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/IndexedDB/crashtests/create-index.any.js.ini b/tests/wpt/meta/IndexedDB/crashtests/create-index.any.js.ini
new file mode 100644
index 00000000000..e1cf8446fd3
--- /dev/null
+++ b/tests/wpt/meta/IndexedDB/crashtests/create-index.any.js.ini
@@ -0,0 +1,17 @@
+[create-index.any.html]
+  expected: TIMEOUT
+  [Assure no crash when populating index]
+    expected: TIMEOUT
+
+
+[create-index.any.worker.html]
+  expected: TIMEOUT
+  [Assure no crash when populating index]
+    expected: TIMEOUT
+
+
+[create-index.any.serviceworker.html]
+  expected: ERROR
+
+[create-index.any.sharedworker.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/IndexedDB/idbdatabase_createObjectStore.any.js.ini b/tests/wpt/meta/IndexedDB/idbdatabase_createObjectStore.any.js.ini
index 4512d163880..368133106f4 100644
--- a/tests/wpt/meta/IndexedDB/idbdatabase_createObjectStore.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/idbdatabase_createObjectStore.any.js.ini
@@ -5,9 +5,6 @@
   [Both with empty name]
     expected: FAIL
 
-  [Create 1000 object stores, add one item and delete]
-    expected: FAIL
-
   [Object store 'name' and 'keyPath' properties are correctly set ]
     expected: FAIL
 
@@ -25,9 +22,6 @@
   [Both with empty name]
     expected: FAIL
 
-  [Create 1000 object stores, add one item and delete]
-    expected: FAIL
-
   [Object store 'name' and 'keyPath' properties are correctly set ]
     expected: FAIL
 
diff --git a/tests/wpt/meta/IndexedDB/idbobjectstore-cross-realm-methods.html.ini b/tests/wpt/meta/IndexedDB/idbobjectstore-cross-realm-methods.html.ini
index f3912116c34..bbe9c510a2d 100644
--- a/tests/wpt/meta/IndexedDB/idbobjectstore-cross-realm-methods.html.ini
+++ b/tests/wpt/meta/IndexedDB/idbobjectstore-cross-realm-methods.html.ini
@@ -4,16 +4,16 @@
     expected: TIMEOUT
 
   [Cross-realm IDBObjectStore::add() method from detached <iframe> works as expected]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Cross-realm IDBObjectStore::delete() method from detached <iframe> works as expected]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Cross-realm IDBObjectStore::clear() method from detached <iframe> works as expected]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Cross-realm IDBObjectStore::getKey() method from detached <iframe> works as expected]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Cross-realm IDBObjectStore::getAll() method from detached <iframe> works as expected]
     expected: FAIL
@@ -31,4 +31,4 @@
     expected: FAIL
 
   [Cross-realm IDBObjectStore::get() method from detached <iframe> works as expected]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/IndexedDB/idbobjectstore_count.any.js.ini b/tests/wpt/meta/IndexedDB/idbobjectstore_count.any.js.ini
index ec40813b485..1e636fd5ef2 100644
--- a/tests/wpt/meta/IndexedDB/idbobjectstore_count.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/idbobjectstore_count.any.js.ini
@@ -1,9 +1,10 @@
 [idbobjectstore_count.any.worker.html]
+  expected: TIMEOUT
   [Returns the number of records in the object store ]
     expected: FAIL
 
   [Returns the number of records that have keys within the range ]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Returns the number of records that have keys with the key]
     expected: FAIL
@@ -16,11 +17,12 @@
   expected: ERROR
 
 [idbobjectstore_count.any.html]
+  expected: TIMEOUT
   [Returns the number of records in the object store ]
     expected: FAIL
 
   [Returns the number of records that have keys within the range ]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Returns the number of records that have keys with the key]
     expected: FAIL
diff --git a/tests/wpt/meta/IndexedDB/idbobjectstore_delete.any.js.ini b/tests/wpt/meta/IndexedDB/idbobjectstore_delete.any.js.ini
index 3a00296dee8..21597e03849 100644
--- a/tests/wpt/meta/IndexedDB/idbobjectstore_delete.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/idbobjectstore_delete.any.js.ini
@@ -15,6 +15,9 @@
   [If the object store has been deleted, the implementation must throw a DOMException of type InvalidStateError]
     expected: FAIL
 
+  [delete() key doesn't match any records]
+    expected: FAIL
+
 
 [idbobjectstore_delete.any.serviceworker.html]
   expected: ERROR
@@ -36,6 +39,9 @@
   [If the object store has been deleted, the implementation must throw a DOMException of type InvalidStateError]
     expected: FAIL
 
+  [delete() key doesn't match any records]
+    expected: FAIL
+
 
 [idbobjectstore_delete.any.sharedworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta/IndexedDB/idbobjectstore_get.any.js.ini b/tests/wpt/meta/IndexedDB/idbobjectstore_get.any.js.ini
index bfe0602a39a..46fd3aac489 100644
--- a/tests/wpt/meta/IndexedDB/idbobjectstore_get.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/idbobjectstore_get.any.js.ini
@@ -2,19 +2,23 @@
   expected: ERROR
 
 [idbobjectstore_get.any.html]
+  expected: TIMEOUT
   [Returns the record with the first key in the range]
-    expected: FAIL
+    expected: TIMEOUT
 
   [When a transaction is aborted, throw TransactionInactiveError]
     expected: FAIL
 
   [Key is a number]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Key is a string]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Key is a date]
+    expected: TIMEOUT
+
+  [Attempts to retrieve a record that doesn't exist]
     expected: FAIL
 
 
@@ -22,17 +26,21 @@
   expected: ERROR
 
 [idbobjectstore_get.any.worker.html]
+  expected: TIMEOUT
   [Returns the record with the first key in the range]
-    expected: FAIL
+    expected: TIMEOUT
 
   [When a transaction is aborted, throw TransactionInactiveError]
     expected: FAIL
 
   [Key is a number]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Key is a string]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Key is a date]
+    expected: TIMEOUT
+
+  [Attempts to retrieve a record that doesn't exist]
     expected: FAIL
diff --git a/tests/wpt/meta/IndexedDB/structured-clone.any.js.ini b/tests/wpt/meta/IndexedDB/structured-clone.any.js.ini
index 67f8265815b..cf30ade4784 100644
--- a/tests/wpt/meta/IndexedDB/structured-clone.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/structured-clone.any.js.ini
@@ -205,6 +205,9 @@
   [SyntaxError: SyntaxError: ghi]
     expected: FAIL
 
+  [Float16Array: -Infinity,-1.5,-1,-0.5,0,0.5,1,1.5,Infinity,NaN]
+    expected: FAIL
+
 
 [structured-clone.any.html?101-last]
   [TypeError: TypeError]
@@ -279,6 +282,9 @@
   [Not serializable: MessageChannel: [object MessageChannel\]]
     expected: FAIL
 
+  [SyntaxError: SyntaxError: ghi]
+    expected: FAIL
+
 
 [structured-clone.any.worker.html?21-40]
   [number: Infinity]
@@ -902,6 +908,9 @@
   [Not serializable: MessageChannel: [object MessageChannel\]]
     expected: FAIL
 
+  [SyntaxError: SyntaxError: ghi]
+    expected: FAIL
+
 
 [structured-clone.any.worker.html?81-100]
   [Uint16Array: 0,1,65534,65535]
@@ -964,6 +973,9 @@
   [SyntaxError: SyntaxError: ghi]
     expected: FAIL
 
+  [Float16Array: -Infinity,-1.5,-1,-0.5,0,0.5,1,1.5,Infinity,NaN]
+    expected: FAIL
+
 
 [structured-clone.any.html?21-40]
   [number: Infinity]
diff --git a/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini b/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini
index 3bce89cbed9..57e6b15c56b 100644
--- a/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini
@@ -3,6 +3,9 @@
   [Deactivation of new transactions happens at end of invocation]
     expected: TIMEOUT
 
+  [New transactions are deactivated before next task]
+    expected: FAIL
+
 
 [transaction-deactivation-timing.any.serviceworker.html]
   expected: ERROR
@@ -12,6 +15,9 @@
   [Deactivation of new transactions happens at end of invocation]
     expected: TIMEOUT
 
+  [New transactions are deactivated before next task]
+    expected: FAIL
+
 
 [transaction-deactivation-timing.any.sharedworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta/IndexedDB/value.any.js.ini b/tests/wpt/meta/IndexedDB/value.any.js.ini
index 3f47498e951..2d605012af2 100644
--- a/tests/wpt/meta/IndexedDB/value.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/value.any.js.ini
@@ -1,44 +1,46 @@
 [value.any.html]
+  expected: TIMEOUT
   [Values - Array]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - primitive BigInt]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - BigInt object]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - primitive BigInt inside object]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - BigInt object inside object]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Values - Date]
-    expected: FAIL
+    expected: TIMEOUT
 
 
 [value.any.sharedworker.html]
   expected: ERROR
 
 [value.any.worker.html]
+  expected: TIMEOUT
   [Values - Array]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - primitive BigInt]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - BigInt object]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - primitive BigInt inside object]
-    expected: FAIL
+    expected: TIMEOUT
 
   [BigInts as values in IndexedDB - BigInt object inside object]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Values - Date]
-    expected: FAIL
+    expected: TIMEOUT
 
 
 [value.any.serviceworker.html]
diff --git a/tests/wpt/meta/IndexedDB/value_recursive.any.js.ini b/tests/wpt/meta/IndexedDB/value_recursive.any.js.ini
index 52f0177ca34..35d77e5d325 100644
--- a/tests/wpt/meta/IndexedDB/value_recursive.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/value_recursive.any.js.ini
@@ -2,8 +2,28 @@
   expected: ERROR
 
 [value_recursive.any.html]
+  expected: TIMEOUT
+  [Recursive value - array directly contains self]
+    expected: TIMEOUT
+
+  [Recursive value - array indirectly contains self]
+    expected: TIMEOUT
+
+  [Recursive value - array member contains self]
+    expected: TIMEOUT
+
 
 [value_recursive.any.worker.html]
+  expected: TIMEOUT
+  [Recursive value - array directly contains self]
+    expected: TIMEOUT
+
+  [Recursive value - array indirectly contains self]
+    expected: TIMEOUT
+
+  [Recursive value - array member contains self]
+    expected: TIMEOUT
+
 
 [value_recursive.any.sharedworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta/IndexedDB/writer-starvation.any.js.ini b/tests/wpt/meta/IndexedDB/writer-starvation.any.js.ini
index 3dcadc1bd04..e466205bb34 100644
--- a/tests/wpt/meta/IndexedDB/writer-starvation.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/writer-starvation.any.js.ini
@@ -5,10 +5,12 @@
   expected: ERROR
 
 [writer-starvation.any.worker.html]
+  expected: TIMEOUT
   [IDB read requests should not starve write requests]
-    expected: FAIL
+    expected: TIMEOUT
 
 
 [writer-starvation.any.html]
+  expected: TIMEOUT
   [IDB read requests should not starve write requests]
-    expected: FAIL
+    expected: TIMEOUT