# YandexImageResizer

Operator: Yandex
Purpose: Link previews
Reviewed: 2026-09-14
HTTP identifier: YandexImageResizer
robots.txt token: YandexImageResizer

## What is YandexImageResizer?

Retrieves images for mobile services.

## How to identify it

Look for the YandexImageResizer identifier in a request’s User-Agent. This is a name match, not identity verification. Version strings may change.

## How to check identity

Confirm reverse DNS under yandex.ru, yandex.net or yandex.com, then resolve that hostname back to the original request IP.

## Access and robots.txt

The operator documents robots.txt rules for this identifier.

Optional full-site opt-out; merge with existing rules only if intended. Not a security control.

```text
User-agent: YandexImageResizer
Disallow: /
```

## What it means in your analytics

Repeated image retrieval can reflect resizing or delivery work.

## Useful measures

Shared URLs; Image responses; Preview fetch errors.

## What to check next

Check image cache headers and source-file availability.

## Sources

- [yandex.ru](https://yandex.ru/support/webmaster/ru/robot-workings/check-yandex-robots)

Operator facts are source-backed; interpretation and actions are Apostl guidance.

## Related profiles

- [YandexBot](https://apostl.dev/bots/yandexbot)
- [YandexImages](https://apostl.dev/bots/yandeximages)
- [YandexVideo](https://apostl.dev/bots/yandexvideo)

[Start measuring agent traffic](https://apostl.dev/start/agent-analytics)