diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b024f768..c5a1f0b50 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Changed `SkulptRunner.jsx` implementation of hiding elements to use `display: none` rather than `block-size: 0` (#1219)
 - Enabled `hyphens: auto` globally (with exceptions) to prevent overflow with longer words (#1215)
 - Removed fixed size from `ProjectBar` to prevent overflow when text wraps (#1221)
+- Added missing translation strings (#1222)
 
 ## Changed
 
diff --git a/src/components/Button/Button.jsx b/src/components/Button/Button.jsx
index 2512c0b58..151ffb7ca 100644
--- a/src/components/Button/Button.jsx
+++ b/src/components/Button/Button.jsx
@@ -5,6 +5,7 @@ import { Link } from "react-router-dom";
 import classNames from "classnames";
 
 import "../../assets/stylesheets/Button.scss";
+import { useTranslation } from "react-i18next";
 
 const Button = (props) => {
   const {
@@ -26,6 +27,8 @@ const Button = (props) => {
     buttonIconPosition = "left",
   } = props;
 
+  const { t } = useTranslation();
+
   const buttonClass = classNames("btn", className, {
     "btn--svg-only": !buttonText,
   });
@@ -40,11 +43,11 @@ const Button = (props) => {
       message: confirmText,
       buttons: [
         {
-          label: "Yes",
+          label: t("button.yes"),
           onClick: () => onClickHandler(e),
         },
         {
-          label: "No",
+          label: t("button.no"),
         },
       ],
     });
diff --git a/src/components/Editor/EditorInput/EditorInput.jsx b/src/components/Editor/EditorInput/EditorInput.jsx
index 530dd110f..ece8db7ff 100644
--- a/src/components/Editor/EditorInput/EditorInput.jsx
+++ b/src/components/Editor/EditorInput/EditorInput.jsx
@@ -163,7 +163,7 @@ const EditorInput = () => {
                     {!["main.py", "index.html"].includes(fileName) ? (
                       <Button
                         className="btn--tertiary react-tabs__tab-close-btn"
-                        label="close"
+                        label={t("editorPanel.close")}
                         onClickHandler={(e) => closeFileTab(e, fileName)}
                         ButtonIcon={() => <CloseIcon scaleFactor={0.85} />}
                       />
diff --git a/src/components/Editor/ImageUploadButton/ImageUploadButton.jsx b/src/components/Editor/ImageUploadButton/ImageUploadButton.jsx
index ecb3b144d..49d571338 100644
--- a/src/components/Editor/ImageUploadButton/ImageUploadButton.jsx
+++ b/src/components/Editor/ImageUploadButton/ImageUploadButton.jsx
@@ -10,26 +10,13 @@ import Button from "../../Button/Button";
 import NameErrorMessage from "../ErrorMessage/NameErrorMessage";
 import store from "../../../app/store";
 import ApiCallHandler from "../../../utils/apiCallHandler";
+import { useTranslation } from "react-i18next";
+import { allowedExtensionsString } from "../../../utils/allowedExtensionsString";
 
 const allowedExtensions = {
   python: ["jpg", "jpeg", "png", "gif"],
 };
 
-const allowedExtensionsString = (projectType) => {
-  const extensionsList = allowedExtensions[projectType];
-  if (extensionsList.length === 1) {
-    return `'.${extensionsList[0]}'`;
-  } else {
-    return (
-      `'.` +
-      extensionsList.slice(0, -1).join(`', '.`) +
-      `' or '.` +
-      extensionsList[extensionsList.length - 1] +
-      `'`
-    );
-  }
-};
-
 const ImageUploadButton = ({ reactAppApiEndpoint }) => {
   const [modalIsOpen, setIsOpen] = useState(false);
   const [files, setFiles] = useState([]);
@@ -41,6 +28,7 @@ const ImageUploadButton = ({ reactAppApiEndpoint }) => {
   const projectImages = useSelector((state) => state.editor.project.image_list);
   const imageNames = projectImages.map((image) => `${image.filename}`);
   const user = useSelector((state) => state.auth.user);
+  const { t } = useTranslation();
 
   const closeModal = () => {
     setFiles([]);
@@ -62,19 +50,27 @@ const ImageUploadButton = ({ reactAppApiEndpoint }) => {
         imageNames.includes(fileName) ||
         files.filter((file) => file.name === fileName).length > 1
       ) {
-        dispatch(setNameError("Image names must be unique."));
+        dispatch(
+          setNameError(t("imageUploadButton.errors.imageNameNotUnique")),
+        );
         return false;
       } else if (isValidFileName(fileName, files)) {
         return true;
       } else if (!allowedExtensions[projectType].includes(extension)) {
         dispatch(
           setNameError(
-            `Image names must end in ${allowedExtensionsString(projectType)}.`,
+            t("errors.invalidImageExtension", {
+              extensions: allowedExtensionsString(
+                projectType,
+                t,
+                allowedExtensions,
+              ),
+            }),
           ),
         );
         return false;
       } else {
-        dispatch(setNameError("Error"));
+        dispatch(setNameError("imageUploadButton.error"));
         return false;
       }
     });
@@ -119,7 +115,7 @@ const ImageUploadButton = ({ reactAppApiEndpoint }) => {
   return (
     <>
       <Button
-        buttonText="Upload Image"
+        buttonText={t("imageUploadButton.uploadImage")}
         onClickHandler={showModal}
         className="proj-image-upload-button"
       />
@@ -128,10 +124,10 @@ const ImageUploadButton = ({ reactAppApiEndpoint }) => {
         isOpen={modalIsOpen}
         onRequestClose={closeModal}
         style={customStyles}
-        contentLabel="Upload Image"
+        contentLabel={t("imageUploadButton.uploadImage")}
         appElement={document.getElementById("root") || undefined}
       >
-        <h2>Upload an image</h2>
+        <h2>{t("imageUploadButton.uploadAnImage")}</h2>
 
         <NameErrorMessage />
         <Dropzone
@@ -143,9 +139,7 @@ const ImageUploadButton = ({ reactAppApiEndpoint }) => {
             <section>
               <div {...getRootProps()} className="dropzone-area">
                 <input {...getInputProps()} />
-                <p className="dropzone-info">
-                  Drag and drop images here, or click to select images from file
-                </p>
+                <p className="dropzone-info">{t("imageUploadButton.info")}</p>
                 {files.map((file, i) => (
                   <p key={i}>{file.name}</p>
                 ))}
@@ -154,8 +148,14 @@ const ImageUploadButton = ({ reactAppApiEndpoint }) => {
           )}
         </Dropzone>
         <div className="modal-footer">
-          <Button buttonText="Cancel" onClickHandler={closeModal} />
-          <Button buttonText="Save" onClickHandler={saveImages} />
+          <Button
+            buttonText={t("imageUploadButton.cancel")}
+            onClickHandler={closeModal}
+          />
+          <Button
+            buttonText={t("imageUploadButton.save")}
+            onClickHandler={saveImages}
+          />
         </div>
       </Modal>
     </>
diff --git a/src/components/Editor/ImageUploadButton/ImageUploadButton.test.js b/src/components/Editor/ImageUploadButton/ImageUploadButton.test.js
index df575e530..c03735f19 100644
--- a/src/components/Editor/ImageUploadButton/ImageUploadButton.test.js
+++ b/src/components/Editor/ImageUploadButton/ImageUploadButton.test.js
@@ -44,20 +44,20 @@ describe("When user logged in and owns project", () => {
         </div>
       </Provider>,
     ));
-    button = queryByText(/Upload Image/);
+    button = queryByText("imageUploadButton.uploadImage");
   });
 
   test("Modal opens when Image Upload button clicked", () => {
     fireEvent.click(button);
-    const dropzone = queryByText(/Drag and drop/);
+    const dropzone = queryByText("imageUploadButton.info");
     expect(dropzone).not.toBeNull();
   });
 
   test("Modal closes when cancel button clicked", () => {
     fireEvent.click(button);
-    const cancelButton = queryByText(/Cancel/);
+    const cancelButton = queryByText("imageUploadButton.cancel");
     fireEvent.click(cancelButton);
-    const dropzone = queryByText(/Drag and drop/);
+    const dropzone = queryByText("imageUploadButton.info");
     expect(dropzone).toBeNull();
   });
 });
diff --git a/src/components/Editor/NewInputPanelButton/NewInputPanelButton.jsx b/src/components/Editor/NewInputPanelButton/NewInputPanelButton.jsx
index 3b9b828c1..47af89ea8 100644
--- a/src/components/Editor/NewInputPanelButton/NewInputPanelButton.jsx
+++ b/src/components/Editor/NewInputPanelButton/NewInputPanelButton.jsx
@@ -2,9 +2,11 @@ import React from "react";
 import Button from "../../Button/Button";
 import { useDispatch } from "react-redux";
 import { addFilePanel } from "../EditorSlice";
+import { useTranslation } from "react-i18next";
 
 const NewInputPanelButton = () => {
   const dispatch = useDispatch();
+  const { t } = useTranslation();
 
   const openNewPanel = () => {
     dispatch(addFilePanel());
@@ -12,7 +14,7 @@ const NewInputPanelButton = () => {
   return (
     <Button
       className={"btn--primary"}
-      buttonText="Add another panel"
+      buttonText={t("newInputPanelButton.buttonText")}
       onClickHandler={openNewPanel}
     />
   );
diff --git a/src/components/Modals/ErrorModal.jsx b/src/components/Modals/ErrorModal.jsx
index ec5a4526c..9a3918b97 100644
--- a/src/components/Modals/ErrorModal.jsx
+++ b/src/components/Modals/ErrorModal.jsx
@@ -30,7 +30,7 @@ const ErrorModal = ({ errorType, additionalOnClose }) => {
         onRequestClose={closeModal}
         className="modal-content"
         overlayClassName="modal-overlay"
-        contentLabel="Error"
+        contentLabel={t("modal.error.error")}
         parentSelector={() =>
           document.querySelector("#app") ||
           document.querySelector("editor-wc").shadowRoot.querySelector("#wc")
diff --git a/src/utils/allowedExtensionsString.js b/src/utils/allowedExtensionsString.js
new file mode 100644
index 000000000..f03121bd1
--- /dev/null
+++ b/src/utils/allowedExtensionsString.js
@@ -0,0 +1,10 @@
+export const allowedExtensionsString = (projectType, t, allowedExtensions) => {
+  const extensionsList = allowedExtensions[projectType];
+  if (extensionsList.length === 1) {
+    return `'.${extensionsList[0]}'`;
+  } else {
+    return `'.${extensionsList.slice(0, -1).join(`', '.`)}' ${t(
+      "common.or",
+    )} '.${extensionsList[extensionsList.length - 1]}'`;
+  }
+};
diff --git a/src/utils/componentNameValidation.js b/src/utils/componentNameValidation.js
index 26ce6c689..da0123c4b 100644
--- a/src/utils/componentNameValidation.js
+++ b/src/utils/componentNameValidation.js
@@ -1,4 +1,5 @@
 import { setNameError } from "../redux/EditorSlice";
+import { allowedExtensionsString } from "./allowedExtensionsString";
 
 const allowedExtensions = {
   python: ["py", "csv", "txt"],
@@ -7,17 +8,6 @@ const allowedExtensions = {
 
 const reservedFileNames = ["INSTRUCTIONS.md"];
 
-const allowedExtensionsString = (projectType, t) => {
-  const extensionsList = allowedExtensions[projectType];
-  if (extensionsList.length === 1) {
-    return `'.${extensionsList[0]}'`;
-  } else {
-    return `'.${extensionsList.slice(0, -1).join(`', '.`)}' ${t(
-      "filePanel.errors.or",
-    )} '.${extensionsList[extensionsList.length - 1]}'`;
-  }
-};
-
 const isValidFileName = (fileName, projectType, componentNames) => {
   const extension = fileName.split(".").slice(1).join(".");
   if (
@@ -59,7 +49,11 @@ export const validateFileName = (
     dispatch(
       setNameError(
         t("filePanel.errors.unsupportedExtension", {
-          allowedExtensions: allowedExtensionsString(projectType, t),
+          allowedExtensions: allowedExtensionsString(
+            projectType,
+            t,
+            allowedExtensions,
+          ),
         }),
       ),
     );
diff --git a/src/utils/i18n.js b/src/utils/i18n.js
index 4c0345421..3784849d7 100644
--- a/src/utils/i18n.js
+++ b/src/utils/i18n.js
@@ -116,6 +116,7 @@ i18n
           modal: {
             close: "Close",
             error: {
+              error: "Error",
               heading: "An error has occurred",
               externalLink: {
                 message:
@@ -129,6 +130,7 @@ i18n
             characterLimitExplanation:
               "Files in the editor are limited to {{maxCharacters}} characters",
             viewOnly: "View only",
+            close: "close",
           },
           filePanel: {
             errors: {
@@ -137,7 +139,6 @@ i18n
               containsSpaces: "File names must not contain spaces.",
               generalError: "Error",
               notUnique: "File names must be unique.",
-              or: "or",
               unsupportedExtension:
                 "File names must end in {{allowedExtensions}}.",
             },
@@ -416,6 +417,29 @@ i18n
             loading: "Loading",
             failed: "Load failed",
           },
+          imageUploadButton: {
+            uploadImage: "Upload Image",
+            uploadAnImage: "Upload an image",
+            info: "Drag and drop images here, or click to select images from file",
+            cancel: "Cancel",
+            save: "Save",
+            or: "or",
+            errors: {
+              error: "Error",
+              imageNameNotUnique: "Image names must be unique.",
+              invalidImageExtension: "Image names must end in {{extensions}}.",
+            },
+          },
+          newInputPanelButton: {
+            buttonText: "Add another panel",
+          },
+          button: {
+            yes: "Yes",
+            no: "No",
+          },
+          common: {
+            or: "or",
+          },
         },
       },
       "xx-XX": {
@@ -423,6 +447,7 @@ i18n
           modal: {
             close: "Schließen",
             error: {
+              error: "Fehler",
               heading: "Ein Fehler ist aufgetreten",
               externalLink: {
                 message:
@@ -436,6 +461,7 @@ i18n
             characterLimitExplanation:
               "Dateien im Editor sind auf {{maxCharacters}} Zeichen begrenzt",
             viewOnly: "Nur Ansicht",
+            close: "schließen",
           },
           filePanel: {
             errors: {
@@ -444,7 +470,6 @@ i18n
               containsSpaces: "Dateinamen dürfen keine Leerzeichen enthalten.",
               generalError: "Fehler",
               notUnique: "Dateinamen müssen eindeutig sein.",
-              or: "oder",
               unsupportedExtension:
                 "Dateinamen müssen mit {{allowedExtensions}} enden.",
             },
@@ -724,6 +749,29 @@ i18n
             loading: "Wird geladen",
             failed: "Laden fehlgeschlagen",
           },
+          imageUploadButton: {
+            uploadImage: "Bild hochladen",
+            uploadAnImage: "Laden Sie ein Bild hoch",
+            info: "Ziehen Sie Bilder hierher, oder klicken Sie, um Bilder aus der Datei auszuwählen",
+            cancel: "Stornieren",
+            save: "Speichern",
+            errors: {
+              error: "Fehler",
+              imageNameNotUnique: "Bildnamen müssen eindeutig sein.",
+              invalidImageExtension:
+                "Bildnamen müssen enden auf {{extensions}}.",
+            },
+          },
+          newInputPanelButton: {
+            buttonText: "Fügen Sie ein weiteres Panel hinzu",
+          },
+          button: {
+            yes: "Ja",
+            no: "Nein",
+          },
+          common: {
+            or: "oder",
+          },
         },
       },
     },