Cascii Core
Cascii Core builds ASCII and Unicode diagrams in a browser using vanilla JavaScript, without server or library dependencies.
About Cascii Core
Cascii Core is a web-based ASCII and Unicode diagram builder written in vanilla JavaScript. It runs by opening the cascii.html file in a browser, with no server, web packing, library, markup, or stylesheet dependencies stated.
It provides drawing tools, shape and line layers, dynamic tables, grouping, and text paste/import. When used locally, work autosaves to browser local storage and exports do not include short links; short links and account saving are described for the hosted version at cascii.app.
Key features
- Draw with Square, Circle, Diamond, Text, Table and line layers
- Create dynamic tables with line styling and joints
- Group, order, duplicate, move and resize selections
- Free draw and erase with undo and redo history
- Paste or import text into diagrams
- Import and export work via Base64 for offline use
Best for: Best for users who want to build ASCII and Unicode diagrams from a single local HTML file.
Good for
- Works from a single cascii.html file without server or library dependencies
- Supports ASCII and Unicode output with line styling and themes
- Includes autosave to browser local storage and Base64 import/export
Watch out for
- Local exports do not include short links available on the hosted version
- Listed as v1.0.4 beta
Cascii Core at a glance
- Category
- Design & Creative › Charts & Data Visualization
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Charts & Data Visualization
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Cascii Core FAQ
How do I run Cascii Core locally?
Download the cascii.html file and open it in a browser.
Can I get short links when working locally?
No. Short links do not appear in local exports; the source points to cascii.app for short links and saving work.
How do I transfer work for offline use?
Use Base64 import and export, which is listed for offline work.
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