Your data stays yours.

Local-First Architecture

Every calculator and converter on OneStepKit runs entirely inside your browser using JavaScript. When you enter a number, it is processed on your device, not uploaded to a server.

No Data Collection

We do not collect, store, or transmit any of the values you enter into our tools. Individual tools may make network requests when their functionality requires them. Optional site analytics and advertising are loaded only after the visitor accepts the site's optional cookie/analytics notice. that carry your inputs.

Secure Connections

The entire site is served over HTTPS with TLS encryption. Your connection to onestepkit.com is always encrypted in transit.

Minimal Dependencies

We keep third-party dependencies to an absolute minimum. All core tool logic is hand-written. External libraries (e.g., PDF.js, pdf-lib) are loaded from trusted CDNs and used only when you interact with a specific tool.

Vulnerability Reporting

If you discover a security issue, please contact us immediately at our contact page. We take all reports seriously and will respond promptly.