diff --git a/public/scripts/extensions/stable-diffusion/index.js b/public/scripts/extensions/stable-diffusion/index.js
index 5c903e2f0..247dea357 100644
--- a/public/scripts/extensions/stable-diffusion/index.js
+++ b/public/scripts/extensions/stable-diffusion/index.js
@@ -663,6 +663,19 @@ async function sendGenerationRequest(generationType, prompt, characterName=null,
     }
 }
 
+/**
+ * Generates an "extras" image using a provided prompt and other settings, 
+ * then saves the generated image and either invokes a callback or sends a message with the image.
+ * 
+ * @param {string} prompt - The main instruction or question used to guide the image generation.
+ * @param {string} prefix - Additional context or prefix to guide the image generation.
+ * @param {string} characterName - The name used to determine the sub-directory for saving.
+ * @param {function} [callback] - Optional callback function invoked with the prompt and saved image.
+ *                                If not provided, `sendMessage` is called instead.
+ * 
+ * @returns {Promise<void>} - A promise that resolves when the image generation and processing are complete.
+ *                            The function doesn't explicitly return a value, but based on the results, either a callback is called, a message is sent, or a popup is shown.
+ */
 async function generateExtrasImage(prompt, prefix, characterName, callback) {
     console.debug(extension_settings.sd);
     const url = new URL(getApiUrl());
@@ -694,6 +707,19 @@ async function generateExtrasImage(prompt, prefix, characterName, callback) {
     }
 }
 
+/**
+ * Generates a "horde" image using the provided prompt and configuration settings, 
+ * then saves the generated image and either invokes a callback or sends a message with the image.
+ * 
+ * @param {string} prompt - The main instruction or question used to guide the image generation.
+ * @param {string} prefix - Additional context or prefix to guide the image generation.
+ * @param {string} characterName - The name used to determine the sub-directory for saving.
+ * @param {function} [callback] - Optional callback function invoked with the prompt and saved image.
+ *                                If not provided, `sendMessage` is called instead.
+ * 
+ * @returns {Promise<void>} - A promise that resolves when the image generation and processing are complete.
+ *                            The function doesn't explicitly return a value, but based on the results, either a callback is called, a message is sent, or a toastr error is shown.
+ */
 async function generateHordeImage(prompt, prefix, characterName, callback) {
     const result = await fetch('/horde_generateimage', {
         method: 'POST',
diff --git a/public/scripts/group-chats.js b/public/scripts/group-chats.js
index 19033f2c6..f9767c81a 100644
--- a/public/scripts/group-chats.js
+++ b/public/scripts/group-chats.js
@@ -1135,6 +1135,16 @@ function select_group_chats(groupId, skipAnimation) {
     eventSource.emit('groupSelected', {detail: {id: openGroupId, group: group}});
 }
 
+/**
+ * Handles the upload and processing of a group avatar.
+ * The selected image is read, cropped using a popup, processed into a thumbnail,
+ * and then uploaded to the server.
+ * 
+ * @param {Event} event - The event triggered by selecting a file input, containing the image file to upload.
+ * 
+ * @returns {Promise<void>} - A promise that resolves when the processing and upload is complete.
+ *                            No return value, but internal state might be updated based on the processing result.
+ */
 async function uploadGroupAvatar(event) {
     const file = event.target.files[0];
 
diff --git a/public/scripts/utils.js b/public/scripts/utils.js
index da628ad09..b5c6f4595 100644
--- a/public/scripts/utils.js
+++ b/public/scripts/utils.js
@@ -555,6 +555,16 @@ export function extractDataFromPng(data, identifier = 'chara') {
     }
 }
 
+/**
+ * Sends a base64 encoded image to the backend to be saved as a file.
+ * 
+ * @param {string} base64Data - The base64 encoded image data.
+ * @param {string} characterName - The character name to determine the sub-directory for saving.
+ * @param {string} ext - The file extension for the image (e.g., 'jpg', 'png', 'webp').
+ * 
+ * @returns {Promise<string>} - Resolves to the saved image's path on the server. 
+ *                              Rejects with an error if the upload fails.
+ */
 export async function saveBase64AsFile(base64Data, characterName, ext) {
     // Construct the full data URL
     const format = ext; // Extract the file extension (jpg, png, webp)
diff --git a/server.js b/server.js
index 04ec8ee54..4af7ff0e3 100644
--- a/server.js
+++ b/server.js
@@ -2614,7 +2614,12 @@ app.post('/uploaduseravatar', urlencodedParser, async (request, response) => {
 });
 
 
-
+/**
+ * Ensure the directory for the provided file path exists.
+ * If not, it will recursively create the directory.
+ * 
+ * @param {string} filePath - The full path of the file for which the directory should be ensured.
+ */
 function ensureDirectoryExistence(filePath) {
     const dirname = path.dirname(filePath);
     if (fs.existsSync(dirname)) {
@@ -2624,6 +2629,17 @@ function ensureDirectoryExistence(filePath) {
     fs.mkdirSync(dirname);
 }
 
+/**
+ * Endpoint to handle image uploads.
+ * The image should be provided in the request body in base64 format.
+ * Optionally, a character name can be provided to save the image in a sub-folder.
+ * 
+ * @route POST /uploadimage
+ * @param {Object} request.body - The request payload.
+ * @param {string} request.body.image - The base64 encoded image data.
+ * @param {string} [request.body.ch_name] - Optional character name to determine the sub-directory.
+ * @returns {Object} response - The response object containing the path where the image was saved.
+ */
 app.post('/uploadimage', jsonParser, async (request, response) => {
     // Check for image data
     if (!request.body || !request.body.image) {