Coin Flipper — Free Online

Flip a virtual coin

Free, fast, and runs entirely in your browser — no signup, no upload to a server.

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Sources we checked for Coin Flipper

• IETF RFC 4122 — UUID specification — How universally unique identifiers are defined.
• RANDOM.ORG — Background on true versus pseudo randomness.
• MDN — Crypto.getRandomValues() — The cryptographic randomness source browsers expose.
• web.dev by Google — Practical guidance on performance and web quality.