diff --git a/lib/markdownBuilder.js b/lib/markdownBuilder.js
index a3462b6b..9332af42 100644
--- a/lib/markdownBuilder.js
+++ b/lib/markdownBuilder.js
@@ -578,6 +578,19 @@ function build({
       constraints.push(paragraph([strong(text(i18n`unknown format`)), text(': '), text(i18n`the value of this string must follow the format: `), inlineCode(String(schema.format))]));
     }
 
+    if (schema[keyword`contentEncoding`]) {
+      constraints.push(paragraph([strong(text(i18n`encoding`)), text(': '), text(i18n`the string content must be using the ${schema[keyword`contentEncoding`]} content encoding.`)]));
+    }
+    if (schema[keyword`contentMediaType`]) {
+      constraints.push(paragraph([strong(text(i18n`media type`)), text(': '), text(i18n`the media type of the contents of this string is: `), inlineCode(String(schema[keyword`contentMediaType`]))]));
+    }
+    if (schema[keyword`contentSchema`]) {
+      constraints.push(paragraph([
+        strong(text(i18n`schema`)), text(': '),
+        text(i18n`the contents of this string should follow this schema: `),
+        link(`${schema[keyword`contentSchema`][s.slug]}.md`, i18n`check type definition`, text(gentitle(schema[keyword`contentSchema`][s.titles], schema[keyword`contentSchema`][keyword`type`])))]));
+    }
+
     // https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.6.4
     if (schema[keyword`maxItems`] !== undefined) {
       // console.log('maxItems!', schema[s.filename], schema[s.pointer]);
diff --git a/schemasupport.md b/schemasupport.md
index f73f700d..84cc5a23 100644
--- a/schemasupport.md
+++ b/schemasupport.md
@@ -1,6 +1,6 @@
 # JSON Schema Spec Coverage Report
 
-This report lists the keywords of the JSON Schema spec that are covered in the tests. The overall coverage is 69%
+This report lists the keywords of the JSON Schema spec that are covered in the tests. The overall coverage is 73%
 
 ## The JSON Schema Core Vocabulary
 
@@ -125,13 +125,13 @@ Coverage for [Defined Formats](https://json-schema.org/draft/2019-09/json-schema
 
 ## A Vocabulary for the Contents of String-Encoded Data
 
-Coverage for [A Vocabulary for the Contents of String-Encoded Data](https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.8) is 0%.
+Coverage for [A Vocabulary for the Contents of String-Encoded Data](https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.8) is 100%.
 
 | Keyword            | Supported |
 | :----------------- | --------- |
-| `contentEncoding`  | No        |
-| `contentMediaType` | No        |
-| `contentSchema`    | No        |
+| `contentEncoding`  | Yes       |
+| `contentMediaType` | Yes       |
+| `contentSchema`    | Yes       |
 
 ## A Vocabulary for Basic Meta-Data Annotations
 
diff --git a/test/fixtures/content/html.schema.json b/test/fixtures/content/html.schema.json
new file mode 100644
index 00000000..49011b86
--- /dev/null
+++ b/test/fixtures/content/html.schema.json
@@ -0,0 +1,5 @@
+{
+  "type": "string",
+  "title": "HTML",
+  "contentMediaType": "text/html"
+}
\ No newline at end of file
diff --git a/test/fixtures/content/jwt.schema.json b/test/fixtures/content/jwt.schema.json
new file mode 100644
index 00000000..06129014
--- /dev/null
+++ b/test/fixtures/content/jwt.schema.json
@@ -0,0 +1,26 @@
+{
+  "type": "string",
+  "title": "JWT",
+  "contentMediaType": "application/jwt",
+  "contentSchema": {
+      "title": "JSON Web Token",
+      "type": "array",
+      "minItems": 2,
+      "items": [
+          {
+              "const": {
+                  "typ": "JWT",
+                  "alg": "HS256"
+              }
+          },
+          {
+              "type": "object",
+              "required": ["iss", "exp"],
+              "properties": {
+                  "iss": {"type": "string"},
+                  "exp": {"type": "integer"}
+              }
+          }
+      ]
+  }
+}
\ No newline at end of file
diff --git a/test/fixtures/content/png.schema.json b/test/fixtures/content/png.schema.json
new file mode 100644
index 00000000..14ebd39b
--- /dev/null
+++ b/test/fixtures/content/png.schema.json
@@ -0,0 +1,6 @@
+{
+  "type": "string",
+  "title": "PNG",
+  "contentEncoding": "base64",
+  "contentMediaType": "image/png"
+}
\ No newline at end of file
diff --git a/test/markdownBuilder.test.js b/test/markdownBuilder.test.js
index 6dec88c7..273769fd 100644
--- a/test/markdownBuilder.test.js
+++ b/test/markdownBuilder.test.js
@@ -15,6 +15,32 @@ const { assertMarkdown, loadschemas } = require('./testUtils');
 
 const build = require('../lib/markdownBuilder');
 
+describe('Testing Markdown Builder: content', () => {
+  let results;
+
+  before(async () => {
+    const schemas = await loadschemas('content');
+    const builder = build({ header: false });
+    results = builder(schemas);
+  });
+
+  it('PNG Schema looks OK', () => {
+    assertMarkdown(results.png)
+      .contains('**encoding**: the string content must be using the base64 content encoding.');
+  });
+
+  it('HTML Schema looks OK', () => {
+    assertMarkdown(results.html)
+      .contains('**media type**: the media type of the contents of this string is: `text/html`');
+  });
+
+  it('JWT Schema looks OK', () => {
+    assertMarkdown(results.jwt)
+      .contains('**schema**: the contents of this string should follow this schema: [JSON Web Token](jwt-json-web-token.md "check type definition")')
+      .contains('**media type**: the media type of the contents of this string is: `application/jwt`');
+  });
+});
+
 describe('Testing Markdown Builder: not', () => {
   let results;