@techandsoftware/teletext

This package renders teletext pages using vector graphics (SVG).

• Rich API to draw text and graphics
• Support for teletext level 1, 1.5 and parts of 2.5
• Scalable, high-resolution rendering

Quickstart with CDN:

<div id="teletextscreen"></div>

<script type="module">
  import { Teletext } from 'https://cdn.jsdelivr.net/npm/@techandsoftware/teletext@latest/dist/teletext.min.js';

  const teletext = Teletext();
  teletext.addTo('#teletextscreen');
  teletext.setRow(0, 'Hello world!');
</script>

For local development, install the module and import the following if you're using vite or similar tooling:

import { Teletext } from '@techandsoftware/teletext';

It can also be run in nodejs by passing in a DOM window, see the API.

Docs

• Full documentation
  • Usage
  • API
  • Demos

License

The project is licensed under GNU Affero General Public License 3 AGPL-3.0-only. For commercial support and integration enquiries, contact [e-mail].

The fonts supplied in the demo/fonts directory have their own licenses. See the *.license files in that directory.

This package is compliant with REUSE 3.

Credits

• Unscii font used for block graphics when setView or enhance().putG3() is called - http://viznut.fi/unscii/
• Native font stack adapted from Bootstrap's - https://getbootstrap.com/docs/4.5/content/reboot/#native-font-stack
• The internal API used for drawing SVG is a subset of svg.js v3 - https://svgjs.dev/docs/3.0/
• Teletext test pages from https://teletextarchive.com/
• The data format for stored test pages and for the loadPageFromEncodedString API is from Simon Rawles' teletext editor - https://edit.tf/
• The Output Line format is taken from MRG's .tti file spec - https://zxnet.co.uk/teletext/documents/ttiformat.pdf