asciinema player

asciinema player is a web player for terminal session recordings.

Unlike typical web video players, which play heavyweight video files (.mp4, .mov), asciinema player plays lightweight terminal session recordings in the text-based asciicast format (.cast), such as those produced by asciinema recorder.

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The player is built from the ground up with JavaScript and Rust (WASM), and is available as npm package and a standalone JS bundle.

You can use it on any HTML page - in a project documentation, on a blog, or in a conference talk presentation.

It's as easy as adding a single line of Javascript code to your web page:

AsciinemaPlayer.create('demo.cast', document.getElementById('demo'));

Check out the quick start guide for basic setup overview.

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Notable features:

• ability to copy-paste terminal content - it's just text after all!
• smooth, timing-accurate playback,
• idle time optimization to skip periods of inactivity,
• posters,
• markers for navigation or auto-pause,
• configurable font families and line height,
• automatic terminal scaling to fit into container element in most efficient way,
• full-screen mode,
• multiple color themes for standard 16 colors + support for 256 color palette and 24-bit true color (ISO-8613-3),
• adjustable playback speed,
• looped playback, infinite or finite,
• starting playback at specific time,
• API for programmatic control,
• keyboard shortcuts,
• support for other recording formats like ttyrec, typescript.

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asciinema player is free and open-source software (FOSS). Source code and license available at github.com/asciinema/asciinema-player.