Create a CDN Resource

Last update: July 28 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. Ensure that you have topped up your balance by 550 ₽.

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

3. Select the content delivery optimization type. You will be able to change the optimization type after creating the CDN resource.

   • Static — suitable for delivering small files: images, video and audio files, text formats;
   • or Large files — suitable for delivering large files without loss of quality, such as videos. Files are cached and delivered in parts (slices) using HTTP Range requests. By default, the slice size is 16 MB; you can change the slice size after creating the CDN resource.

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

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

S3

1. Ensure that you have topped up your balance by 550 ₽.

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

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

4. Select the content delivery optimization type. You will be able to change the optimization type after creating the CDN resource.

   • Static — suitable for delivering small files: images, video and audio files, text formats;
   • or Large files — suitable for delivering large files without loss of quality, such as videos. Files are cached and delivered in parts (slices) using HTTP Range requests. By default, the slice size is 16 MB; you can change the slice size after creating the CDN resource.

5. In the Address block, specify the address of the public bucket in the format *.selstorage.ru without a protocol. You can view the bucket address in the Control Panel: in 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 the CDN server will distribute will be accessible via a link like *.selcdn.net. You can leave the default domain or add a personal domain.

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

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