# Write a Blob to a file (/docs/guides/write-file/blob)

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Related: [Append content to a file](/docs/guides/write-file/append.md), [Write a string to a file](/docs/guides/write-file/basic.md), [Write a file to stdout](/docs/guides/write-file/cat.md), [Copy a file to another location](/docs/guides/write-file/file-cp.md), [Write a file incrementally](/docs/guides/write-file/filesink.md), [Write a Response to a file](/docs/guides/write-file/response.md)

Use [`Bun.write()`](/runtime/file-io#writing-files-bun-write) to write a `Blob` to disk. The first argument is a *destination*, like an absolute path or `BunFile` instance. The second argument is the *data* to write.

```ts
const path = "/path/to/file.txt";
await Bun.write(path, "Lorem ipsum");
```

***

The `BunFile` class extends `Blob`, so you can pass a `BunFile` directly into `Bun.write()` as well.

```ts
const path = "./out.txt";
const data = Bun.file("./in.txt");

// write the contents of ./in.txt to ./out.txt
await Bun.write(path, data);
```

***

See [`Bun.write()`](/runtime/file-io#writing-files-bun-write).