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Sixel support in DA1
DA1 (Primary Device Attributes) response includes attribute 4, indicating sixel graphics support. This is the standard way for applications to detect sixel capability — send CSI c, check if the response contains ;4; in the attribute list. More reliable than attempting to render a sixel image and checking if the cursor moved.
How this is tested: Check if the DA1 response (CSI ? Ps ; Ps ; ... c) includes attribute 4 (sixel graphics). In headless mode, checks capabilities.sixel flag.
Analysis2026-03-26
Supported by 1 of 8 terminals (13%). Part of the Rich TUI baseline.
Supported by 1 of 13 backends (8%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | |
| Ghostty | 1.3.1 | ✗ no | DA1 response missing ;4 (sixel) |
| VS Code | 1.112.0 | ✗ no | DA1 response missing ;4 (sixel) |
| Warp | 0.2026.03.18.08.24.03 | ✗ no | DA1 response missing ;4 (sixel) |
| Cursor | 2.6.21 | ✗ no | DA1 response missing ;4 (sixel) |
| Kitty | 0.46.2 | ✗ no | DA1 response missing ;4 (sixel) |
| Terminal.app | 2.15 | ✗ no | DA1 response missing ;4 (sixel) |
| tmux | 3.6a | ? unknown | |
| GNU Screen | 5.0.1 | ? unknown |