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agg vs Terminalizer: catalog facts
agg	Terminalizer
Free Free and open source under the GPL 3.0 licence.	Free Free and open source under the MIT licence.
Windows, Command line	Windows, macOS, Linux, Command line
Optimized GIF output through gifski Works directly with asciinema recordings	Exports animated GIFs from terminal recordings Recordings are editable files before rendering
Only converts asciicast files, so you need asciinema to record first GIFs are larger and less sharp than the live asciinema player	Requires Node.js and pulls in Electron for rendering Infrequent updates, last changes in 2024
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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