diff --git a/apps/client/src/features/modals/upload-modal/uploadUtils.ts b/apps/client/src/features/modals/upload-modal/uploadUtils.ts
new file mode 100644
index 000000000..a30c11fbf
--- /dev/null
+++ b/apps/client/src/features/modals/upload-modal/uploadUtils.ts
@@ -0,0 +1,71 @@
+type ValidationStatus = {
+  errors: string[];
+  isValid: boolean;
+};
+
+export function validateFile(file: File): ValidationStatus {
+  const status: ValidationStatus = { errors: [], isValid: true };
+  if (!file) {
+    status.errors.push('No file to upload');
+    status.isValid = false;
+  }
+
+  // Limit file size to 1MB
+  if (file.size > 1000000) {
+    status.errors.push('File size limit (1MB) exceeded');
+    status.isValid = false;
+  }
+
+  // Check file extension
+  if (!file.name.endsWith('.xlsx') && !file.name.endsWith('.json')) {
+    status.errors.push('Unhandled file type');
+    status.isValid = false;
+  }
+  return status;
+}
+
+export type MaybeFile = null | 'ontime' | 'excel';
+
+export function isExcelFile(file: File | null) {
+  return file?.name.endsWith('.xlsx');
+}
+
+export function isOntimeFile(file: File | null) {
+  return file?.name.endsWith('.json');
+}
+
+export type ExcelImportMapKeys = keyof typeof defaultExcelImportMap;
+
+// TODO: extract to shared code
+export const defaultExcelImportMap = {
+  worksheet: 'ontime',
+  projectName: 'project name',
+  projectDescription: 'project description',
+  publicUrl: 'public url',
+  publicInfo: 'public info',
+  backstageUrl: 'backstage url',
+  backstageInfo: 'backstage info',
+  timeStart: 'start',
+  timeEnd: 'end',
+  duration: 'duration',
+  cue: 'cue',
+  title: 'title',
+  presenter: 'presenter',
+  subtitle: 'subtitle',
+  isPublic: 'public',
+  skip: 'skip',
+  note: 'note',
+  colour: 'colour',
+  endAction: 'end action',
+  timerType: 'timer type',
+  user0: 'user0',
+  user1: 'user1',
+  user2: 'user2',
+  user3: 'user3',
+  user4: 'user4',
+  user5: 'user5',
+  user6: 'user6',
+  user7: 'user7',
+  user8: 'user8',
+  user9: 'user9',
+};
diff --git a/apps/client/src/features/modals/upload-modal/utils.ts b/apps/client/src/features/modals/upload-modal/utils.ts
deleted file mode 100644
index 940448571..000000000
--- a/apps/client/src/features/modals/upload-modal/utils.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-type ValidationStatus = {
-  errors: string[];
-  isValid: boolean;
-};
-
-export function validateFile(file: File): ValidationStatus {
-  const status: ValidationStatus = { errors: [], isValid: true };
-  if (!file) {
-    status.errors.push('No file to upload');
-    status.isValid = false;
-  }
-
-  // Limit file size to 1MB
-  if (file.size > 1000000) {
-    status.errors.push('File size limit (1MB) exceeded');
-    status.isValid = false;
-  }
-
-  // Check file extension
-  if (!file.name.endsWith('.xlsx') && !file.name.endsWith('.json')) {
-    status.errors.push('Unhandled file type');
-    status.isValid = false;
-  }
-  return status;
-}