Ghostty 1.4 is a major release of the terminal emulator, focused on lower memory use, broader graphics support, improved Linux workflows, and more accurate terminal behavior. Its largest memory improvement comes from compressing scrollback by an average of more than 90%; combined with other optimizations, total memory use falls by 50-90%, depending on workload. The release also brings performance gains, support for macOS 27, and a new OpenGL renderer on Linux.
The update completes support for the Kitty graphics protocol, including animation and relative image placement, following conformance testing against the specification and Kitty itself. It adds the Kitty clipboard protocol, with image previews when programs request clipboard access, and lets Linux users drag and drop splits, including between windows. The new ghostty +ssh command automatically installs terminal information on remote hosts to make SSH sessions work more smoothly. Numerous terminal emulation accuracy fixes round out the changes. Version 1.4 reflects seven months of work by 172 contributors across 2,889 commits and fixes 10 security advisories, making the update relevant both for new features and security.
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