Your data never leaves your device. All files are processed entirely in your browser using client-side JavaScript - no data is stored on our servers or sent anywhere. There's no account to hack, no database storing your files, and no API connections to your bank or accounting software. You upload, convert, download, and we forget it immediately.

No payment or signup required. You can upload your file, see a free preview of the conversion results, and verify everything looks correct before paying anything. If it doesn't work for your files, you haven't wasted any money. We only charge when you're satisfied and ready to download the final converted file.

You can, but free scripts and AI often miss edge cases that break real-world data: missing SKUs, currency formatting quirks, tax calculation errors, or date format mismatches. We have battle-tested validators specifically designed for accounting software imports that catch these issues before they corrupt your books. Plus, you get instant browser-based conversion without installing Python or managing dependencies.

QuickBooks Pro, Premier, and Enterprise versions 2020 through 2025. The IIF format has been supported by Desktop for decades and continues to work.

QuickBooks Desktop doesn't have a native CSV import for sales transactions. IIF (Intuit Interchange Format) is the Desktop-native format for importing transactions, lists, and account data.

Before importing, ensure these accounts exist in your Chart of Accounts: 'Undeposited Funds' (already default), 'Sales Income' (Income type), 'Shipping Income' (Income type), 'Sales Tax Payable' (Liability type if you have taxes).

QuickBooks Desktop requires exclusive access to the company file during IIF imports. Switch to single-user mode via File → Switch to Single-User Mode.

QuickBooks Desktop limits customer names to 41 characters (vs 100 for Online). We automatically truncate longer names to prevent import errors.

This tool imports paid orders as Cash Sales. For refunds, you'll need to create Credit Memos manually in Desktop, or use our Refunds converter for QuickBooks Online.

No, this outputs IIF format specifically for Desktop. For QuickBooks Online, use our standard Shopify → QuickBooks converter at /convert/shopify-quickbooks.

IIF format requires ASCII encoding. We automatically replace or remove special characters, emoji, and non-ASCII text to ensure import success.

Shopify syncs with QuickBooks Desktop once per day at a scheduled time, though manual sync is available anytime. Previously it synced every 5 minutes until November 2023.

Our converter syncs Shopify products to QuickBooks Desktop using CSV exports. Export products from Shopify, convert with our tool, and import to QuickBooks. For automated two-way inventory synchronization, third-party tools like MyWorks or Webgility offer API-based subscriptions, but our tool works perfectly for manual imports without monthly fees.