[Yandex Cloud documentation](../../../index.md) > [Yandex Cloud CDN](../../index.md) > [Step-by-step guides](../index.md) > Resources > Enabling file compression # Enabling file compression {% note info %} Before delivery, CDN servers will compress the content using the GZIP algorithm. Clients receive content in the same format with the `Content-Encoding` HTTP header. Only uncompressed content is requested from origins. {% endnote %} Enabling file compression also helps avoid the situation where compressed files are delivered to users who had not requested compressed content. For more information, see [Troubleshooting in Cloud CDN](../../troubleshooting.md#compressed-files). To enable [compression](../../concepts/compression.md) of [resource](../../concepts/resource.md) files: {% list tabs group=instructions %} - Management console {#console} 1. In the [management console](https://console.yandex.cloud), select the folder where your resource is located. 1. Navigate to **Cloud CDN**. 1. Click the resource name. 1. Navigate to the **Content** tab. 1. In the top-right corner, click ![image](../../../_assets/console-icons/pencil.svg) **Edit**. 1. In the **GZip** field, enable **Compress**. 1. Click **Save**. - CLI {#cli} If you do not have the Yandex Cloud CLI yet, [install and initialize it](../../../cli/quickstart.md#install). The folder used by default is the one specified when [creating](../../../cli/operations/profile/profile-create.md) the CLI profile. To change the default folder, use the `yc config set folder-id ` command. You can also specify a different folder for any command using `--folder-name` or `--folder-id`. If you access a resource by its name, the search will be limited to the default folder. If you access a resource by its ID, the search will be global, i.e., through all folders based on access permissions. 1. View the description of the CLI command to update a resource: ```bash yc cdn resource update --help ``` 1. Get a list of all resources in the default folder: ```bash yc cdn resource list --format yaml ``` Result: ```text id: s0me1dkfjq******** folder_id: s0mef01der7p******** cname: testexample.com created_at: "2022-01-19T09:23:57.921365Z" updated_at: "2022-01-19T10:55:30.305141Z" active: true options: edge_cache_settings: enabled: true default value: "345600" cache_http_headers: enabled: true value: - content-type - content-length - connection - server - date - test stale: enabled: true value: - error - updating allowed_http_methods: value: - GET - POST - HEAD - OPTIONS origin_group_id: "89783" origin_group_name: My origins group origin_protocol: HTTP ssl_certificate: type: DONT_USE status: READY ``` 1. Enable file compression using the `--gzip-on` flag: ```bash yc cdn resource update --gzip-on ``` For more information about the `yc cdn resource update` command, see the [CLI reference](../../../cli/cli-ref/cdn/cli-ref/resource/update.md). - Terraform {#tf} If you do not have Terraform yet, [install it and configure the Yandex Cloud provider](../../../tutorials/infrastructure-management/terraform-quickstart.md#install-terraform). To manage infrastructure using Terraform under a service account or user accounts (a Yandex account, a federated account, or a local user), [authenticate](../../../terraform/authentication.md) using the appropriate method. 1. In the configuration file, describe the properties of the CDN resource to create: ```hcl resource "yandex_cdn_resource" "my_resource" { cname = "cdn1.yandex-example.ru" active = false origin_protocol = "https" secondary_hostnames = ["cdn-example-1.yandex.ru", "cdn-example-2.yandex.ru"] origin_group_id = yandex_cdn_origin_group.my_group.id options { gzip_on = true } } ``` Where: * `cname`: Primary domain name used for content distribution. This is a required setting. * `active`: Flag indicating content availability to end users. `True`: CDN content will be available to clients. This is an optional setting. The default value is `true`. * `origin_protocol`: Protocol for origins. This is an optional setting. * `secondary_hostnames`: Additional domain names. This is an optional setting. * `origin_group_id`: [Origin group](../../concepts/origins.md) ID. This is a required setting. Use the ID from the description of the origin group in the `yandex_cdn_origin_group` resource. * The `options` section contains additional parameters of CDN resources: * `gzip_on`: Flag indicating whether compression will be used. For more information about the `yandex_cdn_resource` properties in Terraform, see the [provider documentation](../../../terraform/resources/cdn_resource.md). 1. In the command line, go to the directory with the Terraform configuration file. 1. Check the configuration using this command: ``` terraform validate ``` If the configuration is valid, you will get this message: ``` Success! The configuration is valid. ``` 1. Run this command: ``` terraform plan ``` You will see a list of resources and their properties. No changes will be made at this step. Terraform will show any errors in the configuration. 1. Apply the configuration changes: ``` terraform apply ``` 1. Type `yes` and press **Enter** to confirm the changes. You can check the CDN resource update in the [management console](https://console.yandex.cloud) or using this [CLI](../../../cli/quickstart.md) command: ``` yc cdn resource list ``` - API {#api} Use the [update](../../api-ref/Resource/update.md) REST API method for the [Resource](../../api-ref/Resource/index.md) resource or the [ResourceService/Update](../../api-ref/grpc/Resource/update.md) gRPC API call. {% endlist %} It may take up to 15 minutes for the new settings of the existing resource to apply to the CDN servers. After that, we recommend [purging the resource cache](purge-cache.md).