diff --git a/meta/classes/create-spdx-3.0.bbclass b/meta/classes/create-spdx-3.0.bbclass
index 785edb9865..6cf8fa4688 100644
--- a/meta/classes/create-spdx-3.0.bbclass
+++ b/meta/classes/create-spdx-3.0.bbclass
@@ -75,7 +75,8 @@ SPDX_IMPORTS[doc] = "SPDX_IMPORTS is the base variable that describes how to \
             SPDX 3 spec. Optional but recommended"
 
 SPDX_SBOM_EXT ??= ".spdx.json"
-SPDX_SBOM_EXT[doc] = "SBOM file extension name."
+SPDX_SBOM_EXT[doc] = "SBOM file extension name.\
+    If it ends with '.zst', SBOMs are automatically compressed using Zstd."
 
 # Agents
 #   Bitbake variables can be used to describe an SPDX Agent that may be used
diff --git a/meta/lib/oe/sbom30.py b/meta/lib/oe/sbom30.py
index 0f1f9281ad..2184c1a07f 100644
--- a/meta/lib/oe/sbom30.py
+++ b/meta/lib/oe/sbom30.py
@@ -1036,8 +1036,15 @@ def write_jsonld_doc(d, objset, dest):
         serializer = oe.spdx30.JSONLDInlineSerializer()
 
     objset.objects.add(objset.doc)
-    with dest.open("wb") as f:
-        serializer.write(objset, f, force_at_graph=True)
+
+    if dest.name.endswith(".zst"):
+        num_threads = int(d.getVar("BB_NUMBER_THREADS"))
+        with bb.compress.zstd.open(dest, "w", num_threads=num_threads) as f:
+            serializer.write(objset, f, force_at_graph=True)
+    else:
+        with dest.open("wb") as f:
+            serializer.write(objset, f, force_at_graph=True)
+
     objset.objects.remove(objset.doc)