diff --git a/pydoctor/node2stan.py b/pydoctor/node2stan.py
index 21080cc3a..5361f5fb5 100644
--- a/pydoctor/node2stan.py
+++ b/pydoctor/node2stan.py
@@ -11,7 +11,7 @@
 from docutils.writers import html4css1
 from docutils import nodes, frontend, __version_info__ as docutils_version_info
 
-from twisted.web.template import Tag
+from twisted.web.template import Tag, tags
 if TYPE_CHECKING:
     from twisted.web.template import Flattenable
     from pydoctor.epydoc.markup import DocstringLinker
@@ -226,10 +226,27 @@ def starttag(self, node: nodes.Element, tagname: str, suffix: str = '\n', *args:
 
     def visit_doctest_block(self, node: nodes.doctest_block) -> None:
         pysrc = node[0].astext()
-        if node.get('codeblock'):
-            self.body.append(flatten(colorize_codeblock(pysrc)))
+        if is_code_block:=node.get('codeblock'):
+            pre_tag = colorize_codeblock(pysrc)
         else:
-            self.body.append(flatten(colorize_doctest(pysrc)))
+            pre_tag = colorize_doctest(pysrc)
+        
+        # If it's not a code block, then it must be a doctest block
+        if not is_code_block:
+            # Wrap doctest blocks with a container and toggle button
+            container = tags.div(
+                tags.button(
+                    ">>>",
+                    class_='doctest-toggle',
+                    type='button',
+                    title='Doctest toggle'
+                ),
+                pre_tag,
+                class_='doctest-output'
+            )
+            self.body.append(flatten(container))
+        else:
+            self.body.append(flatten(pre_tag))
         raise nodes.SkipNode()
 
 
diff --git a/pydoctor/test/epydoc/test_epytext2html.py b/pydoctor/test/epydoc/test_epytext2html.py
index 0e8970f11..5004f39fa 100644
--- a/pydoctor/test/epydoc/test_epytext2html.py
+++ b/pydoctor/test/epydoc/test_epytext2html.py
@@ -124,9 +124,9 @@ def test_epytext_complex_list() -> None:
         <ul class="rst-simple"><li>This is a sublist.</li><li>The sublist contains two items.
         <ul><li>The second item of the sublist has its own sublist.</li></ul></li></ul></li>
         <li><p class="rst-first">This list item contains two paragraphs and a doctest block.</p>
-        <pre class="py-doctest"><span class="py-prompt">&gt;&gt;&gt; </span>
+        <div class="doctest-output"><button class="doctest-toggle" title="Doctest toggle" type="button">&gt;&gt;&gt;</button><pre class="py-doctest"><span class="py-prompt">&gt;&gt;&gt; </span>
         <span class="py-builtin">len</span>(<span class="py-string">'This is a doctest block'</span>)
-        <span class="py-output">23</span></pre><p>This is the second paragraph.</p></li></ol>
+        <span class="py-output">23</span></pre></div><p>This is the second paragraph.</p></li></ol>
         '''
     assert epytext2html(doc) == squash(expected)
     
diff --git a/pydoctor/test/test_node2stan.py b/pydoctor/test/test_node2stan.py
index bf3d7c9a9..530730122 100644
--- a/pydoctor/test/test_node2stan.py
+++ b/pydoctor/test/test_node2stan.py
@@ -6,8 +6,8 @@
 
 from pydoctor.epydoc.docutils import get_lineno
 from pydoctor.test import CapSys
-from pydoctor.test.epydoc.test_epytext2html import epytext2node
-from pydoctor.test.epydoc.test_restructuredtext import rst2node, parse_rst
+from pydoctor.test.epydoc.test_epytext2html import epytext2node, epytext2html
+from pydoctor.test.epydoc.test_restructuredtext import rst2node, parse_rst, rst2html
 
 from pydoctor.node2stan import gettext
 from docutils import nodes
@@ -154,3 +154,44 @@ def test_docutils_get_lineno_title_reference(capsys:CapSys) -> None:
     parsed_doc.fields[0].body().to_node().walk(TitleReferenceDump(doc))
     assert capsys.readouterr().out == r'''||title_reference line: None, get_lineno: 28, rawsource: `link <notfound>`
 '''
+
+
+
+def test_epytext_doctest_contains_toggle() -> None:
+    doc = '''
+    A short paragraph.
+
+    >>> 2 + 3
+    5
+    '''
+    html = epytext2html(doc)
+    assert '<div class="doctest-output"' in html
+    assert 'class="doctest-toggle"' in html
+    assert 'py-prompt' in html and 'py-output' in html
+
+
+def test_rst_doctest_contains_toggle() -> None:
+    doc = '''
+    Some text.
+
+    >>> sum([1, 2, 3])
+    6
+    '''
+    html = rst2html(doc)
+    assert '<div class="doctest-output"' in html
+    assert 'class="doctest-toggle"' in html
+    assert 'py-prompt' in html and 'py-output' in html
+
+
+def test_rst_codeblock_has_no_toggle() -> None:
+    doc = '''
+    .. code:: python
+
+       >>> 1 + 1
+       2
+    '''
+    html = rst2html(doc)
+    # Code blocks should be colorized but must not include the toggle button
+    assert '<div class="doctest-output"' not in html
+    assert 'class="doctest-toggle"' not in html
+    assert 'py-doctest' in html
diff --git a/pydoctor/themes/base/apidocs.css b/pydoctor/themes/base/apidocs.css
index bdb548cd4..0a26501de 100644
--- a/pydoctor/themes/base/apidocs.css
+++ b/pydoctor/themes/base/apidocs.css
@@ -611,6 +611,41 @@ pre.py-doctest {
     color: #c7254e;
 }
 
+/* Doctest output toggle */
+
+.doctest-output {
+    position: relative;
+}
+
+.doctest-toggle {
+    position: absolute;
+    top: 0.5em;
+    right: 0.5em;
+    background-color: #f0f0f0;
+    border: 1px solid #ccc;
+    border-radius: 3px;
+    padding: 0.25em 0.5em;
+    color: #666;
+    font-family: monospace;
+    line-height: 1;
+}
+
+.doctest-toggle:hover {
+    background-color: #e8e8e8;
+    border-color: #999;
+}
+
+.doctest-output.hide-output .py-prompt,
+.doctest-output.hide-output .py-more,
+.doctest-output.hide-output .py-output,
+.doctest-output.hide-output .py-except {
+    display: none;
+}
+
+.doctest-output.hide-output .doctest-toggle {
+    text-decoration: line-through;
+}
+
 /* Admonitions */
 
 div.rst-admonition p.rst-admonition-title:after {
diff --git a/pydoctor/themes/base/pydoctor.js b/pydoctor/themes/base/pydoctor.js
index 49866fc91..a5d532a38 100644
--- a/pydoctor/themes/base/pydoctor.js
+++ b/pydoctor/themes/base/pydoctor.js
@@ -33,3 +33,20 @@ function updatePrivate() {
 }
 
 initPrivate();
+
+// Toggle doctest output visibility
+
+function initDoctest() {
+    // Add click handlers to all doctest toggle buttons
+    var buttons = document.querySelectorAll('button.doctest-toggle');
+    buttons.forEach(function(button) {
+        button.addEventListener('click', function() {
+            var container = button.closest('div.doctest-output');
+            if (container) {
+                container.classList.toggle('hide-output');
+            }
+        });
+    });
+}
+
+initDoctest()