How PaycheckForge Built a Privacy-Respecting Embeddable Paycheck Calculator Using Iframes

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PaycheckForge developed an embeddable paycheck calculator that uses a plain iframe with no JavaScript SDK or API key, keeping integration simple for host websites. The tool uses fixed heights per calculator type instead of a dynamic resize protocol, reducing complexity and improving compatibility with restricted JavaScript environments. All salary and tax calculations run entirely in the browser, meaning sensitive financial inputs are never sent to PaycheckForge servers, though the developer acknowledges a standard HTTP request is still made when the frame loads. The embed route deliberately strips out navigation, ads, and analytics, and is marked noindex to avoid duplicate content in search results. Accessibility was also prioritized, with descriptive iframe titles, proper label associations, keyboard-visible focus, and support for reduced-motion preferences built into the widget by default.

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ProgrammingDEV Community ·

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