Create a CDN Resource

Last update: May 30 2026

A CDN resource is a set of settings that determine how content is delivered from the origin to CDN servers and sent from CDN servers to end users.

You can specify the following as the content origin:

• your own origin using your website's domain or IP address;
• or an S3 bucket.

You can also duplicate an already created resource.

Your own origin

1. In the control panel, on the top menu, click Products and select CDN.

2. Click Create CDN resource.

3. Select the type of files to be distributed:

   • Static — suitable for distributing images, small video files, JavaScript files, CSS files, and more. Images and video files are compressed in an optimal way. Text files are compressed by default using Gzip;
   • or Large files — suitable for distributing large files without loss of quality, for example, videos. Files from the content origin are not compressed but are downloaded in parts (16 MB) using HTTP Range requests.

4. In the Address field, specify your website's domain or IP address.

5. Click Create. When a CDN resource is created, a default domain is automatically generated. Files that will be distributed by the CDN server will be accessible via a link like *.selcdn.net. You can keep the default domain or add a custom domain.

S3

1. If you do not have a bucket in Selectel S3 yet, create a public bucket and upload files to it according to the S3: Quick Start guide.

2. In the control panel, on the top menu, click Products and select CDN.

3. Click Create CDN resource.

4. Select the type of files to be distributed:

   • Static — suitable for distributing images, small video files, JavaScript files, CSS files, and more. Images and video files are compressed in an optimal way. Text files are compressed by default using Gzip;
   • or Large files — suitable for distributing large files without loss of quality, for example, videos. Files from the content origin are not compressed but are downloaded in parts (16 MB) using HTTP Range requests.

5. In the Address block, specify the address of the public bucket in the format *.selstorage.ru without the protocol. You can view the bucket address in the control panel: on the top menu, click Products → S3 → select a project → Buckets section → bucket page → Domains tab → Primary domain.

6. Click Create. When a CDN resource is created, a default domain will be automatically generated. Files that will be distributed by the CDN server will be accessible via a link like *.selcdn.net. You can keep the default domain or add a custom domain.

7. Open the page of the created resource → Origin tab.

8. In the Hostname block, in the Hostname when requesting origin field, specify the address of the public bucket you added in step 5.