> ## Documentation Index
> Fetch the complete documentation index at: https://e2b.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Download data from sandbox

You can download data from the sandbox using the `files.read()` method.

<CodeGroup>
  ```js JavaScript & TypeScript theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
  import fs from 'fs'
  import { Sandbox } from 'e2b'

  const sandbox = await Sandbox.create()

  // Read file from sandbox
  const content = await sandbox.files.read('/path/in/sandbox')
  // Write file to local filesystem
  fs.writeFileSync('/local/path', content)
  ```

  ```python Python theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
  from e2b import Sandbox

  sandbox = Sandbox.create()

  # Read file from sandbox
  content = sandbox.files.read('/path/in/sandbox')
  # Write file to local filesystem
  with open('/local/path', 'w') as file:
    file.write(content)
  ```
</CodeGroup>

## Download with pre-signed URL

Sometimes, you may want to let users from unauthorized environments, like a browser, download files from the sandbox.
For this use case, you can use pre-signed URLs to let users download files securely.

All you need to do is create a sandbox with the `secure: true` option. A download URL will then be generated with a signature that allows only authorized users to access files.
You can optionally set an expiration time for the URL so that it will be valid only for a limited time.

<CodeGroup>
  ```js JavaScript & TypeScript theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
  import fs from 'fs'
  import { Sandbox } from 'e2b'

  // Start a secured sandbox (all operations must be authorized by default)
  const sandbox = await Sandbox.create(template, { secure: true })

  // Create a pre-signed URL for file download with a 10 second expiration
  const publicUrl = await sandbox.downloadUrl(
    'demo.txt', {
      useSignatureExpiration: 10_000, // optional
    },
  )

  // Download a file with a pre-signed URL (this can be used in any environment, such as a browser)
  const res = await fetch(publicUrl)
  const content = await res.text()
  ```

  ```python Python theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
  from e2b import Sandbox

  # Start a secured sandbox (all operations must be authorized by default)
  sandbox = Sandbox.create(timeout=12_000, secure=True)

  # Create a pre-signed URL for file download with a 10 second expiration
  # The user only has to visit the URL to download the file, this also works in a browser.
  signed_url = sbx.download_url(path="demo.txt", user="user", use_signature_expiration=10_000)
  ```
</CodeGroup>