# Cache and deliver files globally

🤖/tlcdn/deliver caches and delivers files globally.

![](/_next/static/media/tlcdn-deliver.06wtrbjz15_m4.png?dpl=dpl_BKGqLNQjWctpVS239h7ZAKL6edZN)

When you want Transloadit to transform files on the fly, this Robot can cache and deliver the results close to your end-user, saving on latency and encoding volume. The use of this Robot is implicit when you use the `tlcdn.com` domain.

## Usage example

Cache and deliver files over Smart CDN using the tlcdn.com domain:

```
{
  "steps": {
    "deliver": {
      "robot": "/tlcdn/deliver"
    }
  }
}
```

## Parameters

* ### `interpolate`

`boolean | Record<string, boolean>`\
Controls whether Assembly Variables are interpolated for individual instruction fields.\
By default, most Robot instruction fields interpolate Assembly Variables. Set this to `false` to treat every instruction field as literal text, or set an individual field path to `false` to treat only that field as literal text. For Robot-specific fields that are literal by default, set this to `true` or set that field path to `true` to opt back into interpolation.\
Use field names such as `path`, or dotted paths such as `ffmpeg.vf` for nested objects.

* ### `output_meta`

`Record<string, boolean> | boolean | Array<string>`\
Allows you to specify a set of metadata that is more expensive on CPU power to calculate, and thus is disabled by default to keep your Assemblies processing fast.\
For images, you can add `"has_transparency": true` in this object to extract if the image contains transparent parts and `"dominant_colors": true` to extract an array of hexadecimal color codes from the image.\
For images, you can also add `"blurhash": true` to extract a [BlurHash](https://blurha.sh) string — a compact representation of a placeholder for the image, useful for showing a blurred preview while the full image loads.\
For videos, you can add the `"colorspace: true"` parameter to extract the colorspace of the output video.\
For audio, you can add `"mean_volume": true` to get a single value representing the mean average volume of the audio file.\
You can also set this to `false` to skip metadata extraction and speed up transcoding.

* ### `result`

`boolean` (default: `false`)\
Whether the results of this Step should be present in the Assembly Status JSON

* ### `queue`

`batch`\
Setting the queue to 'batch', manually downgrades the priority of jobs for this step to avoid consuming Priority job slots for jobs that don't need zero queue waiting times

* ### `force_accept`

`boolean` (default: `false`)\
Force a Robot to accept a file type it would have ignored.\
By default, Robots ignore files they are not familiar with.[🤖/video/encode](/docs/robots/video-encode.md), for example, will happily ignore input images.\
With the `force_accept` parameter set to `true`, you can force Robots to accept all files thrown at them. This will typically lead to errors and should only be used for debugging or combatting edge cases.

* ### `ignore_errors`

`boolean | Array<meta | execute>` (default: `[]`)\
Ignore errors during specific phases of processing.\
Setting this to `["meta"]` will cause the Robot to ignore errors during metadata extraction.\
Setting this to `["execute"]` will cause the Robot to ignore errors during the main execution phase.\
Setting this to `true` is equivalent to `["meta", "execute"]` and will ignore errors in both phases.

* ### `enable_hipaa_compliance`

`boolean` (default: `false`)\
When enabled, use the HIPAA-compliant Smart CDN pricing profile for this delivery step (20% lower price factor). When disabled, the non-HIPAA baseline price factor applies.

## Related blog posts

* [How to get started with the Transloadit Smart CDN](/blog/2024/02/getting-started-with-tlcdn/) February 16, 2024