About ArpGate DevTools
Our mission#
ArpGate DevTools exists for a simple reason: the small calculations developers do every day — formatting a JSON payload, decoding a JWT, splitting a CIDR block, verifying an HMAC signature — should not require pasting production data into a stranger’s website. Before sites like this one, that was the default workflow: copy the real API key into a random form, hope for the best, rotate credentials later. We think that trade should never be necessary. Every one of our 94 utilities runs with a strict promise: your input stays on your machine.
100% client-side, zero upload#
There is no backend application here. No API server receives your data, no database stores it, no worker queues it for processing. Each tool is a static page whose logic runs inside your browser tab using standard web platform APIs — the Web Crypto API for hashing and encryption, the Canvas API for image work, plain JavaScript for everything else.
The promise is enforced, not just stated. The site ships a strict Content-Security-Policy whose connect-src 'self' directive instructs your browser to block any outbound network request from these pages. You can verify this yourself: open your browser’s developer tools, watch the Network tab, and use any tool — you will see no request carrying your input. The only external script that can ever load is the advertising script, and only after you explicitly accept the consent notice.
Our privacy stance#
Because nothing is uploaded, nothing can be logged, mined, resold, or breached on our side. We do not run accounts, so there is no profile to attach your activity to. The full details — what the consent banner stores, which cookies advertising partners may set after consent — are in our Privacy Policy.
How this site is built#
ArpGate DevTools is a fully static site generated with Astro. Pages are pre-rendered at build time and served as plain HTML, CSS, and JavaScript — there is no runtime framework on the server and no client-side framework dependency. Heavy lifting comes from the web platform itself plus a small set of audited open-source libraries for niche formats. The interface is translated into 12 languages with native-quality content per locale, uses a self-hosted font stack, and works in both light and dark themes.
The project’s source code and issue tracker live in a public repository on Gitee — search for the arpgate/ipinfo project and you will find it.