---
title: "Deprecation: #78279 - Deprecate top.TYPO3.Backend.ContentContainer.iframe"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-78279"
source: "Changelog/8.5/Deprecation-78279-DeprecateTopTYPO3BackendContentContaineriframe.rst"
modified: "2026-09-14T09:47:36+00:00"
---

# Deprecation: #78279 - Deprecate top.TYPO3.Backend.ContentContainer.iframe

See [forge#78279](https://forge.typo3.org/issues/78279)

## Description

The property `top.TYPO3.Backend.ContentContainer.iframe` has been marked as deprecated.

## Impact

Using this property will stop working in TYPO3 v9.

## Affected Installations

All installations using `top.TYPO3.Backend.ContentContainer.iframe`.

## Migration

Use accessor method `top.TYPO3.Backend.ContentContainer.get()` instead.