Write-back to Excel (File System Access)

What is write-back?

Write-back lets you edit rows in SheetForge and have those changes automatically saved back to your original Excel file on your computer - no export/import cycle needed.

Requirements

• Browser: Chrome or Edge only (uses the File System Access API, not supported in Firefox or Safari)
• Plan: Pro plan or higher
• File format: Excel (.xlsx) files only

How to connect your Excel file

1. Go to sheetforge.ai/generate-app
2. Click "Connect to file" in the file upload area
3. Your browser will show a file picker - select your Excel file
4. Grant read/write permission when prompted
5. SheetForge will load your file and immediately have a live connection to it

How auto-save works

Every time you edit or add a row in your generated app, SheetForge automatically writes the updated data back to your Excel file. You will see a "Saved" confirmation in the header. If you close and reopen the file in Excel, your changes will be there.

Multi-sheet Excel files

When your Excel file has multiple sheets and you have selected all of them in SheetForge, write-back updates all sheets simultaneously, preserving each tab and its data.

Important: Write-back only works in the current browser session. If you close the tab, you will need to reconnect to your file next time.