Quick helpers for recurring everyday tasks. Right in your browser, with no installation and no unnecessary overhead.
The toolbox
Each tool solves one clearly defined task—without complicated setup or a steep learning curve.
With the IBAN Checker, you can reliably check, convert, and analyze bank details. Whether you want to check the validity of an IBAN, generate a complete IBAN from the account number and bank sort code, or retrieve specific information about an existing bank account – this tool supports you quickly and easily. In addition to validating IBANs and BICs, the IBAN Checker also offers the conversion back to account numbers and bank sort codes (for German accounts) and recognizes bank details such as name, location, or BIC. This makes the tool ideal for accounting departments, financial service providers, or anyone who regularly works with payment data and requires reliable control. The database is derived from official sources, such as the Deutsche Bundesbank, and is regularly updated. A clear user interface ensures you can achieve your goals efficiently – without any prior technical knowledge.
With Daywalker, you can determine at a glance how any given period of time is comprised: working days, weekends, and public holidays – precisely calculated and, if desired, differentiated by country and region. Whether for project planning, vacation management, or time analysis: you receive clear figures and an intuitive display per year. Regional peculiarities such as the Augsburg Peace Festival or the Assumption of Mary are reliably taken into account. Public holidays can be displayed including their country of origin, validity period, and corresponding regions – even with appropriate emojis. Everything is ready to use, multilingual, and ready for dark interfaces.
Validate electronic invoices in PDF or XML format for compliance with EN 16931 and XRechnung. Invoice Inspector analyzes your invoice using the official KoSIT Validator, detects errors, warnings, and informational messages, and presents the results in a clear validation report—ideal for development, quality assurance, and production environments.