diff --git a/next.config.js b/next.config.js
index 685b0b2..65ae78c 100644
--- a/next.config.js
+++ b/next.config.js
@@ -7,6 +7,18 @@ const withBundleAnalyzer = require('@next/bundle-analyzer')({
 const nextConfig = {
   reactStrictMode: true,
   swcMinify: true,
+  
+  // Increase body size limit for file uploads.
+  experimental: {
+    serverComponentsExternalPackages: [],
+  },
+  
+  // Configure API routes to handle larger file uploads
+  api: {
+    bodyParser: {
+      sizeLimit: '100mb',
+    },
+  },
 
   // https://github.com/privateOmega/html-to-docx/issues/129
   webpack: (config) => {
diff --git a/src/app/api/submit-material/route.ts b/src/app/api/submit-material/route.ts
index 882e238..6c57c46 100644
--- a/src/app/api/submit-material/route.ts
+++ b/src/app/api/submit-material/route.ts
@@ -20,6 +20,15 @@ const getLectureData = (formData: FormData) => {
   return lectures
 }
 
+// Configure body size limit for this API route
+export const config = {
+  api: {
+    bodyParser: {
+      sizeLimit: '100mb',
+    },
+  },
+}
+
 // See documentation in /docs/zenodo/design.md
 export async function POST(
   req: NextRequest,
diff --git a/src/pages/submit-material/index.tsx b/src/pages/submit-material/index.tsx
index 077e875..355ee89 100644
--- a/src/pages/submit-material/index.tsx
+++ b/src/pages/submit-material/index.tsx
@@ -159,6 +159,9 @@ export default function SubmitMaterial({ pageCopy }: SubmitMaterialProps) {
         <Label>
           {pageCopy.attributes.CourseMaterials}
           <input name='courseFiles' type="file" multiple accept={acceptTypes} onChange={e => setCourseFiles(e.target.files)} />
+          <small style={{fontSize: '1.2rem', color: '#666', marginTop: '0.5rem', display: 'block'}}>
+            Stöds: PDF, Word (.docx, .doc), PowerPoint (.pptx, .ppt), Text (.txt)
+          </small>
           {errors?.courseFiles && errors?.courseFiles._errors && <ErrorMessage role="alert">{errors?.courseFiles._errors}</ErrorMessage>}
         </Label>
         {lectures.map((lecture, index) => {
@@ -182,6 +185,9 @@ export default function SubmitMaterial({ pageCopy }: SubmitMaterialProps) {
             <Label>
               {pageCopy.attributes.LectureFiles}
               <input name={`lecture-${index}-files`} type="file" multiple accept={acceptTypes} />
+              <small style={{fontSize: '1.2rem', color: '#666', marginTop: '0.5rem', display: 'block'}}>
+                Stöds: PDF, Word (.docx, .doc), PowerPoint (.pptx, .ppt), Text (.txt)
+              </small>
               {errors?.lectures && errors.lectures[index] && errors.lectures[index].files?._errors && <ErrorMessage role="alert">{errors?.lectures[index].files?._errors}</ErrorMessage>}
             </Label>
           </LectureWrapper>