About Si-des Tools
Si-des Tools is a real, working utility suite — 26 free tools and 16 sign-in-gated ones, spanning everyday calculators and converters, privacy/security checks, and a client-side PDF toolkit. Every tool here does genuine work: file conversion and image rendering happen entirely in your browser, and nothing you upload is sent to a third-party service unless a tool's own description says otherwise.
Why does this app exist?
Si-des Tools doubles as the reference relying party for Si-des Auth, a standalone OAuth 2.0 / OpenID Connect identity provider built as a separate application. The sign-in-gated tools exist specifically to prove that Si-des Auth's authorization-code-with-PKCE flow, ID token verification, and RP-initiated logout all work end-to-end against a real, independent client — not just in a demo hosted on the same codebase.
Free vs. sign-in required
Free, no sign-in
Calculators, converters, generators, and the privacy checks — anything that doesn't need to know who you are stays open, by design.
Sign in required
The PDF toolkit, steganography, and the speed test are gated purely to exercise the Si-des Auth login flow — not to paywall functionality or track usage.