APIstax

# APIstax > APIstax provides secure, reliable REST APIs (HTML to PDF, Swiss QR Invoice, EPC QR, VAT validation, geocoding, barcodes, and more). Built and hosted in Austria. ## Key Information * All APIs use JSON requests/responses and are documented via OpenAPI. * Dashboard / account management available at [https://app.apistax.io](https://app.apistax.io). ## Available APIs * **HTML to PDF**: Generate PDF files using HTML content as request payload. [https://apistax.io/docs/html-to-pdf](https://apistax.io/docs/html-to-pdf) * **EPC QR Code**: Generate EPC QR Codes to use it on your invoices and payment requests. [https://apistax.io/docs/epc-qr-code](https://apistax.io/docs/epc-qr-code) * **Swiss QR Invoice**: Generate Swiss QR bills to use it on your invoice documents. [https://apistax.io/docs/swiss-qr-invoice](https://apistax.io/docs/swiss-qr-invoice) * **Invoice PDF**: Create beautiful PDF invoices just from JSON data with valid e-invoice data included [https://apistax.io/docs/invoice-pdf](https://apistax.io/docs/invoice-pdf) * **VAT Verification**: Validate VAT numbers for EU countries, Switzerland, Norway, Iceland and United Kingdom. [https://apistax.io/docs/vat-verification](https://apistax.io/docs/vat-verification) * **Consumer Price Indexes**: List various, always up-to-date indexes like consumer price index for many countries. [https://apistax.io/docs/indexes](https://apistax.io/docs/indexes) * **Geocoding**: Convert a known address to geo-coordinates. [https://apistax.io/docs/geocode-search](https://apistax.io/docs/geocode-search) * **Reverse Geocoding**: Convert geo-coordinates to a postal address. [https://apistax.io/docs/geocode-reverse](https://apistax.io/docs/geocode-reverse) * **Barcode Generation**: Generate barcodes from a wide range of different formats. [https://apistax.io/docs/barcode](https://apistax.io/docs/barcode) * **PDF to PDF/A**: Convert PDF documents to valid, compliant and archivable PDF/A documents. [https://apistax.io/docs/pdf-to-pdf-a](https://apistax.io/docs/pdf-to-pdf-a) * **SPAYD QR Code**: Generate Short Payment Code QR codes to enable fast, standardized bank transfers using IBAN-based payment data. [https://apistax.io/docs/spayd-qr-code](https://apistax.io/docs/spayd-qr-code) * **PAY by square QR Code**: Create PAY by square QR codes for invoices, retail, and donations, enabling quick bank transfers through supported banking apps. [https://apistax.io/docs/pay-by-square-qr-code](https://apistax.io/docs/pay-by-square-qr-code) * **HCT QR Code**: Generate HCT QR codes for Hungary’s instant payment system to enable fast, bank-to-bank transfers via standardized QR payments. [https://apistax.io/docs/hct-qr-code](https://apistax.io/docs/hct-qr-code) ## Documentation * **Interactive API Docs**: [https://apistax.io/docs](https://apistax.io/docs) * **OpenAPI UI**: [https://api.apistax.io/openapi/](https://api.apistax.io/openapi/) * **All APIs Overview**: [https://apistax.io/apis](https://apistax.io/apis) * **Raw OpenAPI specification (JSON)**: [https://api.apistax.io/q/openapi/](https://api.apistax.io/q/openapi/) ## Developer Resources * **Interactive Documentation**: [https://apistax.io/docs](https://apistax.io/docs) * **OpenAPI UI**: [https://api.apistax.io/openapi/](https://api.apistax.io/openapi/) * **Raw OpenAPI specification (JSON)**: [https://api.apistax.io/q/openapi/](https://api.apistax.io/q/openapi/) * **Postman Collection**: [https://www.postman.com/apistax/apistax/overview](https://www.postman.com/apistax/apistax/overview) * **Java Client**: [https://github.com/APIstax/client-java](https://github.com/APIstax/client-java) * **Quarkus Client**: [https://github.com/quarkiverse/quarkus-apistax](https://github.com/quarkiverse/quarkus-apistax) * **PHP Client**: [https://github.com/APIstax/client-php](https://github.com/APIstax/client-php) ## Policies & Legal * **Imprint**: [https://apistax.io/imprint](https://apistax.io/imprint) * **Terms of Use**: [https://apistax.io/terms-of-use](htt […truncated]