diff --git a/common/settings.ts b/common/settings.ts
index f554cb2c..4dda254e 100644
--- a/common/settings.ts
+++ b/common/settings.ts
@@ -32,6 +32,7 @@ export function parseYamlSettings(settingsMarkdown: string): {
 export const defaultSettings: BuiltinSettings = {
   indexPage: "index",
   hideSyncButton: false,
+  maximumAttachmentSize: 10, // MiB
   actionButtons: [
     {
       icon: "Home",
diff --git a/plugs/editor/upload.ts b/plugs/editor/upload.ts
index e5e20a3f..f373f0e1 100644
--- a/plugs/editor/upload.ts
+++ b/plugs/editor/upload.ts
@@ -1,18 +1,22 @@
+import { readSetting } from "$sb/lib/settings_page.ts";
 import { editor, space } from "$sb/syscalls.ts";
 import { UploadFile } from "../../plug-api/types.ts";
 
-const maximumAttachmentSize = 1024 * 1024 * 10; // 10MB
+const maximumAttachmentSize = 10; // MiB
 
 function folderName(path: string) {
   return path.split("/").slice(0, -1).join("/");
 }
 
 async function saveFile(file: UploadFile) {
-  if (file.content.length > maximumAttachmentSize) {
+  const maxSize = await readSetting("maximumAttachmentSize", maximumAttachmentSize);
+  if (typeof maxSize !== "number") {
+    await editor.flashNotification(
+      "The setting 'maximumAttachmentSize' must be a number", "error");
+  }
+  if (file.content.length > maxSize * 1024 * 1024) {
     editor.flashNotification(
-      `Attachment is too large, maximum is ${
-        maximumAttachmentSize / 1024 / 1024
-      }MB`,
+      `Attachment is too large, maximum is ${maxSize}MiB`,
       "error",
     );
     return;
diff --git a/type/web.ts b/type/web.ts
index df4de583..e9c23ff5 100644
--- a/type/web.ts
+++ b/type/web.ts
@@ -17,6 +17,7 @@ export type BuiltinSettings = {
   plugOverrides?: Record<string, Partial<Manifest>>;
   shortcuts?: Shortcut[];
   hideSyncButton?: boolean;
+  maximumAttachmentSize?: number;
   actionButtons: ActionButton[];
   // Format: compatible with docker ignore
   spaceIgnore?: string;
diff --git a/website/SETTINGS.md b/website/SETTINGS.md
index be51e12c..53e75f60 100644
--- a/website/SETTINGS.md
+++ b/website/SETTINGS.md
@@ -42,6 +42,9 @@ spaceIgnore: |
    largefolder
    *.mp4
 
+# Defines the maximum size of a file you can upload to the space (in MiB)
+maximumAttachmentSize: 10
+
 # Add alternative names to emoji picker
 emoji:
   aliases: