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2026-08-27 21:09:14 +00:00
---
title: Write a Blob to a file
sidebarTitle: Write Blob
mode: center
---
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";
const data = new Blob(["Lorem ipsum"]);
await Bun.write(path, data);
```
---
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).