# identify_as_hcti

Identify a URL screenshot request as coming from HTML/CSS to Image.

## How it works

Set `identify_as_hcti` to `true` to add this header to the top-level page request:

```http
X-HCTI-SCREENSHOT: 1
```

The parameter is available for URL screenshots and defaults to `false`. The header is not added to page subrequests.

Use it when your application wants to:

*   Detect screenshot requests at the origin.
*   Select screenshot-specific content or styling.
*   Label requests in application logs.

Not an authentication mechanism

The header name and value are public and predictable. Do not use `identify_as_hcti` by itself to authorize access or bypass security controls. Use a private value with the `headers` parameter when the origin must authenticate the render.

## JSON example

```json
{
  "url": "https://example.com/report",
  "identify_as_hcti": true
}
```

## Form example

```bash
curl -X POST https://hcti.io/v1/image \
  -u 'UserID:APIKey' \
  --data-urlencode 'url=https://example.com/report' \
  --data 'identify_as_hcti=true'
```

For a private header name or value, use the [`headers` parameter](/parameters/headers/).

## Need help?

Talk to a human. Email [support@htmlcsstoimage.com](mailto:support@htmlcsstoimage.com) and we’ll help you get started.