diff --git a/README.md b/README.md
index fa9e761..3f9126d 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,11 @@ Output Type - `console` (default), `file` or `both`.
 Lower and upper threshold percentages for badge and health indicators, lower threshold can also be used to fail the action. Separate the values with a space and enclose them in quotes; default `'50 75'`.
 
 
+### `collapsible`
+
+Wrap the markdown table in collapsible `<details></details>` tags - `true` or `false` (default).
+
+
 ## Outputs
 
 ### Text Example
@@ -118,6 +123,23 @@ Minimum allowed line rate is 50%
 > 
 > _Minimum allowed line rate is `50%`_
 
+### Collapsible Markdown Example
+
+> ![Code Coverage](https://img.shields.io/badge/Code%20Coverage-83%25-success?style=flat)
+> 
+> <details>
+> <summary>Code Coverage Summary</summary>
+> 
+> Package | Line Rate | Branch Rate | Complexity | Health
+> -------- | --------- | ----------- | ---------- | ------
+> Company.Example | 83% | 69% | 671 | ✔
+> Company.Example.Library | 27% | 100% | 11 | ❌
+> **Summary** | **83%** (1212 / 1460) | **69%** (262 / 378) | 682 | ✔
+> 
+> </details>
+> 
+> _Minimum allowed line rate is `50%`_
+
 
 ## Usage
 
@@ -174,6 +196,7 @@ jobs:
         indicators: true
         output: both
         thresholds: '60 80'
+        collapsible: true
 
     - name: Add Coverage PR Comment
       uses: marocchino/sticky-pull-request-comment@v2
diff --git a/action.yml b/action.yml
index bb3ee76..51a5198 100644
--- a/action.yml
+++ b/action.yml
@@ -40,6 +40,10 @@ inputs:
     description: 'Threshold percentages for badge and health indicators, lower threshold can also be used to fail the action.'
     required: false
     default: '50 75'
+  collapsible:
+    description: 'Wrap the markdown table in collapsible details tags - true / false (default).'
+    required: false
+    default: 'false'
 runs:
   using: 'docker'
   image: 'docker://ghcr.io/irongut/codecoveragesummary:v1.3.0'
@@ -62,3 +66,5 @@ runs:
     - ${{ inputs.output }}
     - '--thresholds'
     - ${{ inputs.thresholds }}
+    - '--collapsible'
+    - ${{ inputs.collapsible }}
diff --git a/src/CodeCoverageSummary/CommandLineOptions.cs b/src/CodeCoverageSummary/CommandLineOptions.cs
index f525a9f..a02eb81 100644
--- a/src/CodeCoverageSummary/CommandLineOptions.cs
+++ b/src/CodeCoverageSummary/CommandLineOptions.cs
@@ -42,5 +42,10 @@ public class CommandLineOptions
 
         [Option(longName: "thresholds", Required = false, HelpText = "Threshold percentages for badge and health indicators, lower threshold can also be used to fail the action.", Default = "50 75")]
         public string Thresholds { get; set; }
+
+        [Option(longName: "collapsible", Required = false, HelpText = "Wrap the markdown table in collapsible details tags - true or false.", Default = "false")]
+        public string CollapsibleString { get; set; }
+
+        public bool Collapsible => CollapsibleString.Equals("true", StringComparison.OrdinalIgnoreCase);
     }
 }
diff --git a/src/CodeCoverageSummary/Program.cs b/src/CodeCoverageSummary/Program.cs
index f0cc63f..28a497e 100644
--- a/src/CodeCoverageSummary/Program.cs
+++ b/src/CodeCoverageSummary/Program.cs
@@ -88,7 +88,7 @@ private static int Main(string[] args)
                                              else if (o.Format.Equals("md", StringComparison.OrdinalIgnoreCase) || o.Format.Equals("markdown", StringComparison.OrdinalIgnoreCase))
                                              {
                                                  fileExt = "md";
-                                                 output = GenerateMarkdownOutput(summary, badgeUrl, o.Indicators, hideBranchRate, o.HideComplexity);
+                                                 output = GenerateMarkdownOutput(summary, badgeUrl, o.Indicators, hideBranchRate, o.HideComplexity, o.Collapsible);
                                                  if (o.FailBelowThreshold)
                                                      output += $"{Environment.NewLine}_Minimum allowed line rate is `{lowerThreshold * 100:N0}%`_{Environment.NewLine}";
                                              }
@@ -329,7 +329,7 @@ private static string GenerateTextOutput(CodeSummary summary, string badgeUrl, b
             return textOutput.ToString();
         }
 
-        private static string GenerateMarkdownOutput(CodeSummary summary, string badgeUrl, bool indicators, bool hideBranchRate, bool hideComplexity)
+        private static string GenerateMarkdownOutput(CodeSummary summary, string badgeUrl, bool indicators, bool hideBranchRate, bool hideComplexity, bool collapsible)
         {
             StringBuilder markdownOutput = new();
 
@@ -339,6 +339,13 @@ private static string GenerateMarkdownOutput(CodeSummary summary, string badgeUr
                               .AppendLine();
             }
 
+            if (collapsible)
+            {
+                markdownOutput.AppendLine("<details>")
+                              .AppendLine("<summary>Expand for details</summary>")
+                              .AppendLine();
+            }
+
             markdownOutput.Append("Package | Line Rate")
                           .Append(hideBranchRate ? string.Empty : " | Branch Rate")
                           .Append(hideComplexity ? string.Empty : " | Complexity")
@@ -361,6 +368,12 @@ private static string GenerateMarkdownOutput(CodeSummary summary, string badgeUr
                           .Append(hideComplexity ? string.Empty : (summary.Complexity % 1 == 0) ? $" | **{summary.Complexity}**" : $" | **{summary.Complexity:N4}**")
                           .AppendLine(indicators ? $" | {GenerateHealthIndicator(summary.LineRate)}" : string.Empty);
 
+            if (collapsible)
+            {
+                markdownOutput.AppendLine()
+                              .AppendLine("</details>");
+            }
+
             return markdownOutput.ToString();
         }
     }