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

# Response Codes

The full set of response codes from the **PDF.co** API are as follows:

| Code  | Description                                                                                                                                                                                                                                     |
| ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `200` | Success.                                                                                                                                                                                                                                        |
| `204` | No content. The server successfully processed the request, and is not returning any content.                                                                                                                                                    |
| `400` | Bad request. Typically due to bad input parameters or unreachable input URLs (e.g., access restrictions like login or password).                                                                                                                |
| `401` | Unauthorized. Authentication is required and has failed or has not yet been provided.                                                                                                                                                           |
| `402` | Not enough credits.                                                                                                                                                                                                                             |
| `403` | Access forbidden for input URL.                                                                                                                                                                                                                 |
| `404` | The requested resource could not be found.                                                                                                                                                                                                      |
| `408` | The server timed out waiting for the request.                                                                                                                                                                                                   |
| `414` | The URI provided was too long for the server to process.                                                                                                                                                                                        |
| `415` | The request entity has a media type not supported by the server or resource.                                                                                                                                                                    |
| `429` | Too many requests in a given time period.                                                                                                                                                                                                       |
| `441` | Invalid Password. Password protected document.                                                                                                                                                                                                  |
| `442` | Input document is damaged or of incorrect type.                                                                                                                                                                                                 |
| `443` | Permissions. The operation is prohibited by document security settings. You can turn off this check by setting the `profiles` param to `{CheckPermissions: false}`. **Important:** only use this if you are the owner or have legal permission. |
| `444` | Profiles parsing error. Please ensure that the configuration is supported. See `/profiles` samples.                                                                                                                                             |
| `445` | Timeout error. For large documents, use asynchronous mode (`async=true`) and check status via `/job/check`. For many-page files, use the `pages` parameter.                                                                                     |
| `446` | Some files required for conversion are missing.                                                                                                                                                                                                 |
| `447` | Invalid template.                                                                                                                                                                                                                               |
| `448` | Invalid URL or HTML. Ensure the provided URL is valid and accessible.                                                                                                                                                                           |
| `449` | Invalid index range. Page index is out of range. Use `/pdf/info` to get page count. First page is `0`.                                                                                                                                          |
| `450` | Invalid page range specified.                                                                                                                                                                                                                   |
| `452` | Invalid URL.                                                                                                                                                                                                                                    |
| `454` | Invalid parameters.                                                                                                                                                                                                                             |
| `455` | Failed to send email.                                                                                                                                                                                                                           |
| `456` | Invalid color. Should be a valid name (e.g., "Red") or hex string (e.g., "#CCBBAA" or "CCBBAA").                                                                                                                                                |
| `457` | SMTP server blocked.                                                                                                                                                                                                                            |
| `466` | Invalid base64 image.                                                                                                                                                                                                                           |
| `490` | Incorrect result data.                                                                                                                                                                                                                          |
| `500` | Something went wrong. Please try again or contact support.                                                                                                                                                                                      |
| `501` | Not implemented. The server was acting as a gateway or proxy and received an invalid response.                                                                                                                                                  |
| `502` | Bad gateway. The server was acting as a gateway or proxy and received an invalid response.                                                                                                                                                      |
| `503` | Service unavailable. Server is overloaded or under maintenance.                                                                                                                                                                                 |
| `504` | Gateway timeout. Server didn’t get a timely response from upstream.                                                                                                                                                                             |
| `505` | HTTP version not supported.                                                                                                                                                                                                                     |