--- sidebar_label: Frame.isOOPFrame --- # Frame.isOOPFrame() method > Warning: This API is now obsolete. > > Generally, there should be no difference between local and out-of-process frames from the Puppeteer API perspective. This is an implementation detail that should not have been exposed. Is `true` if the frame is an out-of-process (OOP) frame. Otherwise, `false`. #### Signature: ```typescript class Frame { abstract isOOPFrame(): boolean; } ``` **Returns:** boolean