# Free tools for integration and bookkeeping work

Small tools for the problems that come up around DATEV, e-commerce and accounting data. They run entirely in your browser: nothing you enter is sent anywhere.

## Tools

- [DATEV EXTF file validator](https://seamless.engineering/tools/datev-extf-validator/): Check a DATEV import file before you import it: header, columns and every booking line, with a plain-language message per line. For Buchungsstapel and Debitoren/Kreditoren files, free and entirely in your browser.
- [Convert PayPal and Stripe exports into a DATEV booking batch](https://seamless.engineering/tools/paypal-stripe-datev/): Load the CSV export from PayPal or Stripe and get a DATEV Buchungsstapel: sales at gross, fees booked separately, payouts through the transit account. Free, and the file stays in your browser.
- [DATEV tax key and revenue account finder](https://seamless.engineering/tools/datev-steuerschluessel/): Domestic, EU business, OSS distance sale or export: which revenue account in SKR03 and SKR04, which BU key, and what else does the booking need? Free, in your browser.
- [SKR03 ↔ SKR04 account converter](https://seamless.engineering/tools/skr03-skr04/): Find the SKR04 counterpart of any common SKR03 account, and the other way round. Search by account number or name, free and entirely in your browser.