> For the complete documentation index, see [llms.txt](https://docs.nzoni.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nzoni.app/nest.js/image-file-upload.md).

# Image File upload

### File upload module path

<pre><code>├── node_modules
<strong>├── mail-templates
</strong>├── migrations
├── src
│   ├── configs
│   ├── domains
│   │   ├── file-uploads      # File uploads module
</code></pre>

### Upload an image

Find out the root below in the controller  <mark style="background-color:blue;">src/domains/file-uploads/file-uploads.controller.ts</mark>

```typescript
  @Post('/image')
  @ApiOperation({
    operationId: 'Upload an image',
    description: 'Upload a file containing an image',
  })
  @UseInterceptors(
    FileInterceptor('file', {
      fileFilter: (req, file, cb) => {
        if (file.size > 1000 * 1000) {
          cb(new BadRequestException('Image is too large'), false);
        } else if (!file.mimetype.startsWith('image')) {
          cb(new BadRequestException('Invalid file format'), false);
        } else {
          cb(null, true);
        }
      },
    }),
  )
  async uploadImage(@UploadedFile() file): Promise<FileUpload> {
    return await this.service.saveFile(file, 'image');
  }
```

### Read an image

Find out the root below in the controller  <mark style="background-color:blue;">src/domains/file-uploads/file-uploads.controller.ts</mark>

```typescript
  @Get('/:id/image')
  @ApiOperation({
    operationId: 'Get an image',
  })
  async getImage(@Res() res, @Param('id') id: number) {
    const image = await this.service.repo.findOne({ where: { id, type: 'image' }});
    if (!!image && existsSync(image.path)) {
      res.set('Content-Type', image.mimetype);
      createReadStream(image.path).pipe(res);
    } else {
      throw new BadRequestException(`File with id ${id} does not exists`);
    }
  }
```