diff --git a/docs/_includes/examples/doc_comments.schema.json b/docs/_includes/examples/doc_comments.schema.json
index 4997ac5..a3aa767 100644
--- a/docs/_includes/examples/doc_comments.schema.json
+++ b/docs/_includes/examples/doc_comments.schema.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "My Amazing Struct",
-  "description": "This struct shows off generating a schema with\na custom title and description.",
+  "description": "This struct shows off generating a schema with\n a custom title and description.",
   "type": "object",
   "properties": {
     "my_bool": {
@@ -48,7 +48,7 @@
           ]
         },
         {
-          "description": "A struct-like enum variant which contains\nsome floats",
+          "description": "A struct-like enum variant which contains\n some floats",
           "type": "object",
           "properties": {
             "StructVariant": {
diff --git a/docs/_includes/examples/schemars_attrs.rs b/docs/_includes/examples/schemars_attrs.rs
index 4ad2503..dc9e495 100644
--- a/docs/_includes/examples/schemars_attrs.rs
+++ b/docs/_includes/examples/schemars_attrs.rs
@@ -1,11 +1,11 @@
-use schemars::{schema_for, JsonSchema};
+use schemars::{schema_for, JsonSchema, Schema};
 use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize, JsonSchema)]
-#[schemars(rename_all = "camelCase", deny_unknown_fields)]
+#[schemars(rename_all = "camelCase", deny_unknown_fields, extend("x-customProperty" = "example"))]
 pub struct MyStruct {
     #[serde(rename = "thisIsOverridden")]
-    #[schemars(rename = "myNumber", range(min = 1, max = 10))]
+    #[schemars(rename = "myNumber", range(min = 1, max = 10), transform = remove_format)]
     pub my_int: i32,
     pub my_bool: bool,
     #[schemars(default)]
@@ -24,6 +24,12 @@ pub enum MyEnum {
     },
 }
 
+fn remove_format(schema: &mut Schema) {
+    if let Some(obj) = schema.as_object_mut() {
+        obj.remove("format");
+    }
+}
+
 fn main() {
     let schema = schema_for!(MyStruct);
     println!("{}", serde_json::to_string_pretty(&schema).unwrap());
diff --git a/docs/_includes/examples/schemars_attrs.schema.json b/docs/_includes/examples/schemars_attrs.schema.json
index ba96767..85efffd 100644
--- a/docs/_includes/examples/schemars_attrs.schema.json
+++ b/docs/_includes/examples/schemars_attrs.schema.json
@@ -19,7 +19,6 @@
     },
     "myNumber": {
       "type": "integer",
-      "format": "int32",
       "maximum": 10,
       "minimum": 1
     },
@@ -37,6 +36,7 @@
     "myBool",
     "myVecStr"
   ],
+  "x-customProperty": "example",
   "$defs": {
     "MyEnum": {
       "anyOf": [
diff --git a/schemars/examples/doc_comments.schema.json b/schemars/examples/doc_comments.schema.json
index 4997ac5..a3aa767 100644
--- a/schemars/examples/doc_comments.schema.json
+++ b/schemars/examples/doc_comments.schema.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "title": "My Amazing Struct",
-  "description": "This struct shows off generating a schema with\na custom title and description.",
+  "description": "This struct shows off generating a schema with\n a custom title and description.",
   "type": "object",
   "properties": {
     "my_bool": {
@@ -48,7 +48,7 @@
           ]
         },
         {
-          "description": "A struct-like enum variant which contains\nsome floats",
+          "description": "A struct-like enum variant which contains\n some floats",
           "type": "object",
           "properties": {
             "StructVariant": {
diff --git a/schemars/examples/schemars_attrs.rs b/schemars/examples/schemars_attrs.rs
index 4ad2503..dc9e495 100644
--- a/schemars/examples/schemars_attrs.rs
+++ b/schemars/examples/schemars_attrs.rs
@@ -1,11 +1,11 @@
-use schemars::{schema_for, JsonSchema};
+use schemars::{schema_for, JsonSchema, Schema};
 use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize, JsonSchema)]
-#[schemars(rename_all = "camelCase", deny_unknown_fields)]
+#[schemars(rename_all = "camelCase", deny_unknown_fields, extend("x-customProperty" = "example"))]
 pub struct MyStruct {
     #[serde(rename = "thisIsOverridden")]
-    #[schemars(rename = "myNumber", range(min = 1, max = 10))]
+    #[schemars(rename = "myNumber", range(min = 1, max = 10), transform = remove_format)]
     pub my_int: i32,
     pub my_bool: bool,
     #[schemars(default)]
@@ -24,6 +24,12 @@ pub enum MyEnum {
     },
 }
 
+fn remove_format(schema: &mut Schema) {
+    if let Some(obj) = schema.as_object_mut() {
+        obj.remove("format");
+    }
+}
+
 fn main() {
     let schema = schema_for!(MyStruct);
     println!("{}", serde_json::to_string_pretty(&schema).unwrap());
diff --git a/schemars/examples/schemars_attrs.schema.json b/schemars/examples/schemars_attrs.schema.json
index ba96767..85efffd 100644
--- a/schemars/examples/schemars_attrs.schema.json
+++ b/schemars/examples/schemars_attrs.schema.json
@@ -19,7 +19,6 @@
     },
     "myNumber": {
       "type": "integer",
-      "format": "int32",
       "maximum": 10,
       "minimum": 1
     },
@@ -37,6 +36,7 @@
     "myBool",
     "myVecStr"
   ],
+  "x-customProperty": "example",
   "$defs": {
     "MyEnum": {
       "anyOf": [