ChatGPT Adds Full-Screen Mode for Long-Form Editing, With Library Saving Support

On June 1, 2026, OpenAI's official ChatGPT account announced a new feature that lets users write and edit long-form text in full screen. Edited long-form text can be saved to the Library and recalled later to continue working.

What Happened

The official ChatGPT account (@ChatGPTapp) announced on X an update designed to make long-form writing more comfortable by providing more space. Specifically, the update lets users edit longer text in full screen, save it to the Library, and resume later. A demo video was also attached.

The feature names are "full-screen editing" and "Library." While the rollout appears to be centered on the web version, the Library itself supports web, iOS, and Android. The official release notes do not yet mention this feature, making it likely that the rollout is still in progress.

Background and Significance

ChatGPT had previously offered the "Canvas" mode for editing long-form text or code alongside the chat, which later evolved into "Writing Blocks / Code Blocks." Around May 2026, Canvas was deprecated for some models, and the migration to the new approach has been advancing.