ChatGPT Plugins

• Accessibility Quick Audit – WCAG checks for one web page
• Bookkeeping Import Check – Validate and fix booking CSVs
• DIN 5008 Letter Builder – Window-envelope ready letters
• E-Invoice Creator – XRechnung and ZUGFeRD files
• Holiday Calendar Builder – Holiday-aware .ics schedules
• PDF Submission Pack – Portal-ready PDF bundles
• Shift Roster Check – German working-time rule check
• Tender Deadline Calculator – VgV deadlines, EU thresholds
• Travel Expense Calculator – German per diems and mileage
• XRechnung Validator – Check and explain e-invoices