diff --git a/ogc/bblocks/known-mimetypes.yaml b/ogc/bblocks/known-mimetypes.yaml
index 4a5ad15..b956a46 100644
--- a/ogc/bblocks/known-mimetypes.yaml
+++ b/ogc/bblocks/known-mimetypes.yaml
@@ -34,6 +34,7 @@ xml:
   mimeType: application/xml
   aliases:
     - application/xml
+    - text/xml
   extensions:
     - xml
 
diff --git a/ogc/bblocks/schemas/transforms.schema.yaml b/ogc/bblocks/schemas/transforms.schema.yaml
index 3929005..47354f4 100644
--- a/ogc/bblocks/schemas/transforms.schema.yaml
+++ b/ogc/bblocks/schemas/transforms.schema.yaml
@@ -69,6 +69,7 @@ $defs:
           - json-ld-frame
           - jq
           - semantic-uplift
+          - xslt
       - description: Other identifiers are also accepted
         $ref: '#/$defs/nonEmptyString'
 
diff --git a/ogc/bblocks/transformers/xslt.py b/ogc/bblocks/transformers/xslt.py
new file mode 100644
index 0000000..da93bf6
--- /dev/null
+++ b/ogc/bblocks/transformers/xslt.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+import json
+from typing import AnyStr
+
+from ogc.bblocks.models import TransformMetadata, Transformer
+from lxml import etree
+
+transform_type = 'xslt'
+
+default_inputs = [
+    'application/xml',
+]
+
+default_outputs = [
+    'application/xml',
+]
+
+class XmlTransformer(Transformer):
+
+    def __init__(self):
+        super().__init__(['xslt'], default_inputs, default_outputs)
+
+    def do_transform(self, metadata: TransformMetadata) -> AnyStr | None:
+        transform = etree.XSLT(etree.XML(metadata.transform_content.encode('utf-8')))
+        result = transform(etree.XML(metadata.input_data.encode('utf-8')))
+        return etree.tostring(result, encoding='utf-8', pretty_print=True, xml_declaration=True).decode('utf-8')
diff --git a/requirements.txt b/requirements.txt
index 0c92a2a..1850656 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,6 +13,7 @@ networkx~=3.1
 jq~=1.6
 pathvalidate==3.2.0
 jsonpointer~=2.4
+lxml~=5.0.0
 
 # mkdocs
 mkdocs>=1.4.2
@@ -25,4 +26,4 @@ mkdocs-pymdownx-material-extras
 mkdocs-section-index
 mkdocstrings
 mkdocstrings-python
-mkdocs-markdownextradata-plugin
\ No newline at end of file
+mkdocs-markdownextradata-plugin