diff --git a/gulpfile.js b/gulpfile.js
index 1c9a2e74..9682be33 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -51,6 +51,34 @@ function buildStyles() {
         .pipe(gulp.dest(path.join(distDirectory, "css")));
 }
 
+/**
+ * Remove unwanted data from a pack entry
+ */
+function cleanPackEntry(entry, cleanSourceId = true) {
+    if (cleanSourceId) {
+        delete entry.flags?.core?.sourceId;
+    }
+    if (entry.permission) entry.permission = { default: 0 };
+
+    const embeddedDocumentCollections = [
+        "drawings",
+        "effects",
+        "items",
+        "lights",
+        "notes",
+        "results",
+        "sounds",
+        "templates",
+        "tiles",
+        "tokens",
+        "walls",
+    ];
+    embeddedDocumentCollections
+        .flatMap((embeddedDocumentCollection) => entry[embeddedDocumentCollection] ?? [])
+        .forEach((embeddedEntry) => cleanPackEntry(embeddedEntry, false));
+    return entry;
+}
+
 /**
  * Convert a stream of JSON files to NeDB files
  */
@@ -60,6 +88,7 @@ const jsonToNeDB = () =>
             try {
                 file.contents = Buffer.from(
                     JSON.parse(file.contents.toString())
+                        .map(cleanPackEntry)
                         .map((entry) => JSON.stringify(entry))
                         .join("\n") + "\n",
                 );
@@ -97,7 +126,7 @@ const neDBToJSON = () =>
                     if (err) {
                         callback(err);
                     } else {
-                        file.contents = Buffer.from(JSON.stringify(docs, undefined, 4) + "\n");
+                        file.contents = Buffer.from(JSON.stringify(docs.map(cleanPackEntry), undefined, 4) + "\n");
                         file.path = path.join(
                             path.dirname(file.path),
                             path.basename(file.path, path.extname(file.path)) + ".json",