diff --git a/docs/contribute/index.md b/docs/contribute/index.md
index 7fe7b15..c92bbab 100644
--- a/docs/contribute/index.md
+++ b/docs/contribute/index.md
@@ -16,7 +16,7 @@ pip install -e /path/to/sphinx_copybutton
 
 The package is tested for three things (see `.github/workflows/integration.yml`):
 
-## code style
+## Code style
 
 To adhere to this code style install the package with [pre-commit](https://pre-commit.com/):
 
@@ -59,7 +59,7 @@ NodeJS >= 12 is required
 Install the package:
 
 ```console
-$ pip install .
+$ pip install .[rtd]
 ```
 
 Then run the docs build:
diff --git a/docs/use.md b/docs/use.md
index 2709c5d..c3b8a0c 100644
--- a/docs/use.md
+++ b/docs/use.md
@@ -231,7 +231,7 @@ but if one of the lines to be copied contains the defined delimiter (here: `EOT`
 then all following lines will be copied literally until the next delimiter is
 encountered in a line.
 
-## Change the copy button image
+## Change the icons
 
 To use a different image for your copy buttons, do the following:
 
@@ -266,7 +266,7 @@ For example, if you wanted to use a **clipboard icon** instead of the default co
    """
    ```
 
-When you re-build your documentation, you should see this new icon in your copy buttons.
+When you re-build your documentation, you should see this new icon in your copy buttons. Similarly, you could change the check icon's image by setting the `checkbutton_image_svg` variable in your `conf.py`. Note that `checkbutton_image_svg` and `copybutton_image_svg` expect the full SVG content, **NOT** a path to an SVG file.
 
 ## Add or remove copy buttons to any element with a CSS selector
 
diff --git a/sphinx_copybutton/__init__.py b/sphinx_copybutton/__init__.py
index d0fd38a..4a2dd68 100644
--- a/sphinx_copybutton/__init__.py
+++ b/sphinx_copybutton/__init__.py
@@ -53,6 +53,7 @@ def add_to_context(app, config):
         config.copybutton_image_svg = path.read_text()
 
     config.html_context.update({"copybutton_image_svg": config.copybutton_image_svg})
+    config.html_context.update({"checkbutton_image_svg": config.checkbutton_image_svg})
     config.html_context.update({"copybutton_selector": config.copybutton_selector})
     config.html_context.update(
         {
@@ -80,6 +81,7 @@ def setup(app):
     app.add_config_value("copybutton_line_continuation_character", "", "html")
     app.add_config_value("copybutton_here_doc_delimiter", "", "html")
     app.add_config_value("copybutton_image_svg", "", "html")
+    app.add_config_value("checkbutton_image_svg", "", "html")
     app.add_config_value("copybutton_selector", "div.highlight pre", "html")
     app.add_config_value("copybutton_exclude", ".linenos", "html")
 
diff --git a/sphinx_copybutton/_static/copybutton.js_t b/sphinx_copybutton/_static/copybutton.js_t
index ec91f20..763db4d 100644
--- a/sphinx_copybutton/_static/copybutton.js_t
+++ b/sphinx_copybutton/_static/copybutton.js_t
@@ -56,15 +56,19 @@ if (doc_url_root == '#') {
 }
 
 /**
- * SVG files for our copy buttons
+ * SVG file contents for our icons, if the user specified their own SVG use that, otherwise use the default.
+   Note that value of `checkbutton_image_svg` or `copybutton_image_svg` is the full SVG content, NOT a path to an SVG file.
  */
-let iconCheck = `<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-check" width="44" height="44" viewBox="0 0 24 24" stroke-width="2" stroke="#22863a" fill="none" stroke-linecap="round" stroke-linejoin="round">
+
+let iconCheck = `{{ checkbutton_image_svg }}`;
+if (!iconCheck) {
+  iconCheck = `<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-check" width="44" height="44" viewBox="0 0 24 24" stroke-width="2" stroke="#22863a" fill="none" stroke-linecap="round" stroke-linejoin="round">
   <title>${messages[locale]['copy_success']}</title>
   <path stroke="none" d="M0 0h24v24H0z" fill="none"/>
   <path d="M5 12l5 5l10 -10" />
 </svg>`
+}
 
-// If the user specified their own SVG use that, otherwise use the default
 let iconCopy = `{{ copybutton_image_svg }}`;
 if (!iconCopy) {
   iconCopy = `<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-copy" width="44" height="44" viewBox="0 0 24 24" stroke-width="1.5" stroke="#000000" fill="none" stroke-linecap="round" stroke-linejoin="round">