Payment Gateway Integration
Integrate online payments quickly with PAYSTRAX. Choose a server-to-server REST API or a ready-made COPYandPAY JavaScript widget – both built for fast, secure setup that fits your business.

One API, multiple ways to integrate payments
The PAYSTRAX Open Payment Platform brings every payment feature and front-end widget together in a single, unified RESTful API. Whether you integrate directly server-to-server or drop in our ready-made JavaScript widget, you connect once and start accepting cards, digital wallets, and alternative payment methods online. Explore the integration methods below and choose the one that fits your business and technical setup.
Choose your payment integration method
Enhanced flexibility allows us to cater to diverse business preferences and technological infrastructures.
API server-to-server integration
Our server-to-server API integrates payment acceptance directly into your platform, giving you fully flexible front-end and back-end workflows. Best for businesses with development resources that need maximum control and customisation.
COPYandPAY JavaScript widget
COPYandPAY is the PAYSTRAX JavaScript payment widget. It sends sensitive card data directly from the shopper's browser to the Open Payment Platform, reducing your PCI DSS scope and speeding up setup. Best for businesses that want a secure, low-code checkout. COPYandPAY also supports Click to Pay, letting shoppers check out with their Visa or Mastercard account instead of typing card details manually.
KEY BENEFITS
Why choose PAYSTRAX for payment integration?
Multiple integration options
Pick the integration method that best matches your technical setup and resources.
Customisable checkout
Match the payment page to your brand with custom styling and fields.
Ready-made frameworks
Speed up development with our pre-built integration frameworks and plugins.
Dedicated support
Tell us your requirements and our team will recommend the best integration path.
Detailed transaction data
Access full transaction details to analyse performance and optimise conversion.
Responsive on every device
Deliver a checkout that adapts to desktop, tablet, and mobile screens.
Flexible configuration
Customise required fields and optimise the flow for a seamless customer experience.
Cost-effective
Lower setup costs and save resources by choosing the integration method that fits your budget.
Multiple integration options
Pick the integration method that best matches your technical setup and resources.
Customisable checkout
Match the payment page to your brand with custom styling and fields.
Ready-made frameworks
Speed up development with our pre-built integration frameworks and plugins.
Dedicated support
Tell us your requirements and our team will recommend the best integration path.
Detailed transaction data
Access full transaction details to analyse performance and optimise conversion.
Responsive on every device
Deliver a checkout that adapts to desktop, tablet, and mobile screens.
Flexible configuration
Customise required fields and optimise the flow for a seamless customer experience.
Cost-effective
Lower setup costs and save resources by choosing the integration method that fits your budget.

Technical tools to make integration faster, easier & more reliable
Test environment: A secure sandbox that mirrors live payment flows, so you can test, validate, and fine-tune your setup risk-free before going live.
Mobile SDK (mSDK): A developer kit for adding secure payments to native iOS and Android apps. The PAYSTRAX mobile SDK supports in-app payments and a smooth mobile checkout – essential for mobile-first businesses.

For developers
The PAYSTRAX developer documentation is your go-to resource for integrating our payment system. It covers every integration method, step-by-step guides, and code references to help you add PAYSTRAX payments to your website or app.
Frequently asked questions
Should I choose server-to-server API or the JavaScript widget?
It depends on your technical resources. The server-to-server API is more flexible but requires more development experience. The COPYandPAY JavaScript widget needs less technical knowledge and reduces PCI scope, but offers less flexibility than the full API.
Do both integration methods accept Google Pay and Apple Pay?
Yes. It doesn’t matter which integration method you choose, you will be able to accept both Apple Pay and Google Pay if this is in your contract with us.
What platforms are supported for online payment gateway integration?
At PAYSTRAX we offer payment gateway integration with various major platforms: Shopify, WooCommerce, OpenCart, PrestaShop, Magento, WP eCommerce, JigoShop, Drupal, xt:Commerce, Gambio, Modified, Commerce:SEO, MijoShop, AceShop, Oxid Esales, SEO Mercari, JTL Shop, Shopware.
Is the payment gateway optimised for mobile?
Yes. With the PAYSTRAX Mobile SDK, you can adapt your checkout for mobile devices and let customers pay easily on their phones.
Can I switch integration methods later?
Yes. If your chosen method no longer fits your needs, you can switch. Contact your account manager and they will guide you through the process.
Is Click to Pay available with PAYSTRAX?
Yes. Click to Pay is available through the COPYandPAY JavaScript widget, allowing shoppers to check out quickly using their saved card network credentials instead of entering card details manually. Learn more about Click to Pay here.
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