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---
name: Stream a file as an HTTP Response
---
This snippet reads a file from disk using [`Bun.file()`](/docs/api/file-io#reading-files-bun-file). This returns a `BunFile` instance, which can be passed directly into the `new Response` constructor.
```ts
const path = "/path/to/file.txt";
const file = Bun.file(path);
const resp = new Response(file);
```
---
The `Content-Type` is read from the file and automatically set on the `Response`.
```ts
new Response(Bun.file("./package.json")).headers.get("Content-Type");
// => application/json;charset=utf-8
new Response(Bun.file("./test.txt")).headers.get("Content-Type");
// => text/plain;charset=utf-8
new Response(Bun.file("./index.tsx")).headers.get("Content-Type");
// => text/javascript;charset=utf-8
new Response(Bun.file("./img.png")).headers.get("Content-Type");
// => image/png
```
---
Putting it all together with [`Bun.serve()`](/docs/api/http#serving-files-bun-serve).
```ts
// static file server
Bun.serve({
async fetch(req) {
const path = new URL(req.url).pathname;
const file = Bun.file(path);
return new Response(file);
},
});
```
---
See [Docs > API > File I/O](/docs/api/file-io#writing-files-bun-write) for complete documentation of `Bun.write()`.
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