diff --git a/README.md b/README.md
index c25fba0..7606d42 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,13 @@ function App() {
 export default App;
 ```
 This is a **good practice** as it allows you to have full control of the Pyodide instance whilst also being able to leverage the component's capabilities. Consider using this when developing applications that use a [singleton model for Pyodide](https://adamemery.dev/articles/pyodide-react) functionality.
+
+## Using Libraries
+
+In order to import any libraries, the folder at the url specified at `indexURL` when creating the pyodide instance (using `loadPyodide`) must contain the required `.whl` files for each library you are using. In order to get all of the libraries that pyodide has to offer, you can use `indexURL='https://cdn.jsdelivr.net/pyodide/v0.23.4/full/'` (This is the default if no instance is given), or you can [Download all packages from here](https://github.com/pyodide/pyodide/releases) (Make sure to use download 
+the right version). 
+
+
 ## Guide to Contributing 🫶
 To get started with contributing, fork this repository and then run the following once you have cloned the forked repo:
 ```
diff --git a/public/pyodide/setuptools-67.6.1-py3-none-any.whl b/public/pyodide/setuptools-67.6.1-py3-none-any.whl
deleted file mode 100644
index 7ece02d..0000000
Binary files a/public/pyodide/setuptools-67.6.1-py3-none-any.whl and /dev/null differ
diff --git a/src/App.js b/src/App.js
index 278b9cf..0933f8a 100644
--- a/src/App.js
+++ b/src/App.js
@@ -25,11 +25,13 @@ function App() {
     console.log(consoleOutputs);
   }, [consoleOutputs])
 
+  // pyodideInstance={myPyodideInstance}
+
   return (
     <div>
       <div className="w-screen h-screen grid place-content-center">
         <PythonEditor width="90vw" height="80vh" consoleOutputSetter={setConsoleOutputs} 
-        pyodideInstance={myPyodideInstance} />
+         pyodideInstance={myPyodideInstance}/> 
       </div>
     </div>
   );  
diff --git a/src/lib/PythonEditor.js b/src/lib/PythonEditor.js
index 17b173b..57c1e0c 100644
--- a/src/lib/PythonEditor.js
+++ b/src/lib/PythonEditor.js
@@ -13,10 +13,11 @@ import CodeIcon from '@mui/icons-material/Code';
 import DownloadIcon from '@mui/icons-material/Download';
 import './build.css';
 
+
 async function runPyodideExecution(codeString, pyodideInstance) {
     let execData = {
         logs: [],
-    }
+    }    
 
     pyodideInstance.setStdout({
         batched: (msg) => {
@@ -32,6 +33,15 @@ async function runPyodideExecution(codeString, pyodideInstance) {
         }
     });
 
+    try{
+        // load from specific URL from Pyodide - if integrity issues check that correct version and correct URL
+        await pyodideInstance.loadPackagesFromImports(codeString);
+    } catch (e) {
+        let outputLine = e.message; // if fails do not run the code, output the error
+        execData.logs.push(outputLine);
+        return execData;
+    }
+
     try {
         await pyodideInstance.runPythonAsync(codeString);
     } catch (e) {
@@ -57,7 +67,7 @@ function PythonEditor(props) {
                 setPyodideInstance(props.pyodideInstance);
             } else {
                 let pyodide = await loadPyodide({
-                    indexURL: "https://cdn.jsdelivr.net/npm/pyodide@0.23.4/"
+                    indexURL: `https://cdn.jsdelivr.net/pyodide/v0.23.4/full/`
                 });
 
                 setPyodideInstance(pyodide);