Twitter Fast Reply is a Chrome extension designed to streamline the process of responding to tweets on X (Twitter) by allowing users to save reply drafts for specific keywords and phrases. This tool integrates seamlessly into the Twitter interface, adding a "Fast Reply" button next to the standard reply option when a user encounters a saved draft keyword in a tweet they are replying to or quoting.

The extension's functionality includes saving drafts directly in the reply editing interface, where users can assign keywords to their drafts. Recent updates have improved the extension by allowing drafts to contain images and enabling users to select from multiple matching drafts. However, users should be aware of known issues, such as potential image loss when drafts contain multiple images, which can be mitigated by re-selecting the draft.