diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca0dff029..4d305c728 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,23 +8,97 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ### Added
 
+- `assets_identifier` attribute for the web component (#901)
+- `code` attribute overriding content of `main.py`/`index.html` in the web component (#901)
+
+## [0.21.2] - 2024-01-23
+
+### Changed
+
+- Minor copy changes to HTML add file modal
+- Toggle errors sent via apiCallHandler off (#890)
+- Upgrade webpack-dev-server to 4.0.0 to support conditional headers
+- Upgrade yarn to 3.4.1 to workaround a string-width issue
+
+### Fixed
+
+- Editor input not focussing on iPad (#898)
+
+## [0.21.1] - 2024-01-11
+
+### Added
+
+- Download panel save button (#872)
+
+### Changed
+
+- Stack editor input and output panels based on container width (#869)
+- Blob/URL replacement in HTMLRunner (#877)
+
+### Fixed
+
+- Boolean web component attributes (#881)
+- Wrap the project bar when sidebar is wide (#869)
+- Web component project bar state update delay (#869)
+- Left border of the project bar (#869)
+- Indentation of code block first line (#883)
+- Code block 3-digit line numbers (#883)
+
+## [0.21.0] - 2024-01-05
+
+### Added
+
+- Load remix functionality (#804)
+- ProjectBar functionality in the web component (#799)
+- WebComponent can receive style strings from host app (#811)
 - Quiz rendering in InstructionsPanel (#777)
 - Styling for the task section of the instructions (#781)
 - Styling for the instructions callouts (#788)
 - Output styles for Instructions (#790, #807)
 - Styling for the instructions code snippets (#795)
-- Styling for the instructions code blocks (#794)
+- Styling for the instructions code blocks (#794, #808)
+- quizReady custom event (#812)
+- Code snippet and code block syntax highlighting for HTML and CSS in the instructions (#824)
+- Toast save reminder to web component (#822)
+- ProgressBar and completion-handling on quizzes (#834)
+- Support for multiple host styles in the web component (#863)
 
 ### Changed
 
+- Untangle HTML runner (#876)
+- Project sidebar mobile structure and default to instructions behaviour (#823)
+- Auth web component from user in local storage (#852)
+- Save and download panel copy (#784)
 - Application of styles in the web component to remove `sass-to-string` (#788)
 - Info panel links open in a new tab (#803)
 - Copy updates (#803)
+- Restyling the instructions progress bar (#808)
 
 ## Fixed
 
+- Standalone editor height (#864)
+- Web component height on Firefox (#838)
 - Web component resizable handle errors & sidebar width (#806)
 - HTML projects loading in web component (#789)
+- Enabled modals in the web component (#802)
+- Context menu styling in the web component (#819)
+- Collect web component login data (#818)
+- Syntax highlighting contrast in dark mode (#824)
+- Secondary button theming (#827)
+- Instructions step buttons hit area (#827)
+- Instructions code block line highlighting (#827)
+- Instructions image widths (#827)
+- Save status spacing (#827)
+- Disappearing borders on tablet (#827)
+- Dark mode button theming (#850)
+- `<strong>` styling on Firefox (#854)
+- Progress bar width on Firefox (#855)
+- Instructions blocks spacing (#856)
+- Font family stacking (#857)
+- Save/download panel spacing (#859)
+- Instructions output wrapping in Firefox (#862)
+- Instructions code blocks with no line numbers (#863)
+- New file button width (#865)
 
 ## [0.20.0] - 2023-11-24
 
diff --git a/src/components/Editor/EditorPanel/EditorPanel.jsx b/src/components/Editor/EditorPanel/EditorPanel.jsx
index 57302aa47..7c2a160ce 100644
--- a/src/components/Editor/EditorPanel/EditorPanel.jsx
+++ b/src/components/Editor/EditorPanel/EditorPanel.jsx
@@ -71,7 +71,7 @@ const EditorPanel = ({ extension = "html", fileName = "index" }) => {
   useEffect(() => {
     const code = project.components.find(
       (item) => item.extension === extension && item.name === fileName,
-    ).content;
+    )?.content;
     const mode = getMode();
     const startState = EditorState.create({
       doc: code,
diff --git a/src/components/ExternalFiles/ExternalFiles.jsx b/src/components/ExternalFiles/ExternalFiles.jsx
index 6c6683988..acefd937a 100644
--- a/src/components/ExternalFiles/ExternalFiles.jsx
+++ b/src/components/ExternalFiles/ExternalFiles.jsx
@@ -6,7 +6,7 @@ const ExternalFiles = () => {
 
   return (
     <div id="file-content" hidden>
-      {project.components.map((file, i) => {
+      {project.components?.map((file, i) => {
         if (["csv", "txt"].includes(file.extension)) {
           return (
             <div id={`${file.name}.${file.extension}`} key={i}>
diff --git a/src/containers/WebComponentLoader.jsx b/src/containers/WebComponentLoader.jsx
index ba207a93f..6855d0ed0 100644
--- a/src/containers/WebComponentLoader.jsx
+++ b/src/containers/WebComponentLoader.jsx
@@ -2,6 +2,7 @@ import React, { useEffect, useState } from "react";
 import { useSelector, useDispatch } from "react-redux";
 import {
   disableTheming,
+  setEmbedded,
   setSenseHatAlwaysEnabled,
   stopCodeRun,
   stopDraw,
@@ -20,6 +21,7 @@ import { useCookies } from "react-cookie";
 const WebComponentLoader = (props) => {
   const loading = useSelector((state) => state.editor.loading);
   const {
+    assetsIdentifier,
     authKey,
     identifier,
     code,
@@ -41,6 +43,7 @@ const WebComponentLoader = (props) => {
     (state) => state.editor.hasShownSavePrompt,
   );
   const saveTriggered = useSelector((state) => state.editor.saveTriggered);
+  const isEmbedded = useSelector((state) => state.editor.isEmbedded);
 
   const [cookies, setCookie] = useCookies(["theme", "fontSize"]);
   const themeDefault = window.matchMedia("(prefers-color-scheme:dark)").matches
@@ -85,8 +88,13 @@ const WebComponentLoader = (props) => {
     }
   }, [loading, project]);
 
+  if (embedded !== isEmbedded) {
+    dispatch(setEmbedded(embedded));
+  }
+
   useProject({
-    projectIdentifier: projectIdentifier,
+    assetsIdentifier,
+    projectIdentifier,
     code,
     accessToken: user && user.access_token,
   });
diff --git a/src/hooks/useProject.js b/src/hooks/useProject.js
index ed788cce2..5743acd23 100644
--- a/src/hooks/useProject.js
+++ b/src/hooks/useProject.js
@@ -6,10 +6,13 @@ import { defaultPythonProject } from "../utils/defaultProjects";
 import { useTranslation } from "react-i18next";
 
 export const useProject = ({
+  assetsIdentifier = null,
   projectIdentifier = null,
   code = null,
   accessToken = null,
 }) => {
+  const project = useSelector((state) => state.editor.project);
+  const loading = useSelector((state) => state.editor.loading);
   const isEmbedded = useSelector((state) => state.editor.isEmbedded);
   const isBrowserPreview = useSelector((state) => state.editor.browserPreview);
   const getCachedProject = (id) =>
@@ -42,6 +45,18 @@ export const useProject = ({
       return;
     }
 
+    if (assetsIdentifier) {
+      dispatch(
+        syncProject("load")({
+          identifier: assetsIdentifier,
+          locale: i18n.language,
+          accessToken,
+          assetsOnly: true,
+        }),
+      );
+      return;
+    }
+
     if (projectIdentifier) {
       dispatch(
         syncProject("load")({
@@ -66,4 +81,37 @@ export const useProject = ({
     const data = defaultPythonProject;
     dispatch(setProject(data));
   }, [projectIdentifier, cachedProject, i18n.language, accessToken]);
+
+  useEffect(() => {
+    if (code && loading === "success") {
+      const defaultName = project.project_type === "html" ? "index" : "main";
+      const defaultExtension = project.project_type === "html" ? "html" : "py";
+
+      const mainComponent = project.components?.find(
+        (component) =>
+          component.name === defaultName &&
+          component.extension === defaultExtension,
+      ) || { name: defaultName, extension: defaultExtension, content: "" };
+
+      const otherComponents =
+        project.components?.filter(
+          (component) =>
+            component.name !== defaultName &&
+            component.extension !== defaultExtension,
+        ) || [];
+
+      const updatedProject = {
+        ...project,
+        project_type: project.project_type || "python",
+        components: [
+          ...otherComponents,
+          {
+            ...mainComponent,
+            content: code,
+          },
+        ],
+      };
+      dispatch(setProject(updatedProject));
+    }
+  }, [code, loading]);
 };
diff --git a/src/redux/EditorSlice.js b/src/redux/EditorSlice.js
index b881265b4..2c3337f2f 100644
--- a/src/redux/EditorSlice.js
+++ b/src/redux/EditorSlice.js
@@ -11,19 +11,24 @@ import {
   createRemix,
   deleteProject,
   readProjectList,
+  loadAssets,
 } from "../utils/apiCallHandler";
 
 export const syncProject = (actionName) =>
   createAsyncThunk(
     `editor/${actionName}Project`,
     async (
-      { project, identifier, locale, accessToken, autosave },
+      { project, identifier, locale, accessToken, autosave, assetsOnly },
       { rejectWithValue },
     ) => {
       let response;
       switch (actionName) {
         case "load":
-          response = await readProject(identifier, locale, accessToken);
+          if (assetsOnly) {
+            response = await loadAssets(identifier, locale, accessToken);
+          } else {
+            response = await readProject(identifier, locale, accessToken);
+          }
           break;
         case "remix":
           response = await createRemix(project, accessToken);
diff --git a/src/utils/apiCallHandler.js b/src/utils/apiCallHandler.js
index 9abf67a77..ce15228a6 100644
--- a/src/utils/apiCallHandler.js
+++ b/src/utils/apiCallHandler.js
@@ -69,6 +69,14 @@ export const readProject = async (projectIdentifier, locale, accessToken) => {
   );
 };
 
+export const loadAssets = async (assetsIdentifier, locale, accessToken) => {
+  const queryString = locale ? `?locale=${locale}` : "";
+  return await get(
+    `${host}/api/projects/${assetsIdentifier}/images${queryString}`,
+    headers(accessToken),
+  );
+};
+
 export const readProjectList = async (page, accessToken) => {
   return await get(`${host}/api/projects`, {
     params: { page },
diff --git a/src/web-component.js b/src/web-component.js
index 252137954..837d9dbcc 100644
--- a/src/web-component.js
+++ b/src/web-component.js
@@ -36,6 +36,7 @@ class WebComponent extends HTMLElement {
 
   static get observedAttributes() {
     return [
+      "assets_identifier",
       "auth_key",
       "identifier",
       "code",
@@ -52,7 +53,9 @@ class WebComponent extends HTMLElement {
   attributeChangedCallback(name, _oldVal, newVal) {
     let value;
 
-    if (["sense_hat_always_enabled", "with_sidebar"].includes(name)) {
+    if (
+      ["sense_hat_always_enabled", "with_sidebar", "embedded"].includes(name)
+    ) {
       value = newVal === "true";
     } else if (["instructions", "sidebar_options"].includes(name)) {
       value = JSON.parse(newVal);