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+---
+name: Encode and decode base64 strings
+---
+
+Bun implements the Web-standard [`atob`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/atob) and [`btoa`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/btoa) functions for encoding and decoding base64 strings.
+
+```ts
+const data = "hello world";
+const encoded = btoa(data); // => "aGVsbG8gd29ybGQ="
+const decoded = atob(encoded); // => "hello world"
+```
+
+---
+
+See [Docs > API > Hashing](/docs/api/hashing#bun-password) for complete documentation.