Optimized for focused coding sessions
Open the editor, work in files, and preview changes quickly. The interface is designed for repeated editing rather than social browsing.
CodePen alternative
A focused CodePen alternative for typed web prototypes
TSBin is built for developers who want a fast web playground with TypeScript support, precise editor feedback, and a local-first workflow that stays out of the way.
Built for the in-between work
Write TypeScript, JavaScript, HTML, and CSS, preview changes quickly, and export the files when you need them.
Better fit for TypeScript examples
Typed snippets can use diagnostics and compiler feedback before they turn into documentation samples, bug reports, or teaching material.
Useful before a project becomes a project
TSBin gives you enough structure for real code without forcing a full app scaffold when all you need is a browser-ready prototype.
What TSBin gives you
Concrete browser-editor features, not a social feed or a heavy project scaffold.
preview renders under 50ms
1Live
Sub-50ms previews
Small snippets refresh in under 50ms on the warm preview path.
2Live
Smart IntelliSense
TypeScript completions, diagnostics, and editor feedback built in.
3Live
Emmet support
Expand HTML and CSS patterns quickly with the Emmet plugin.
4Soon
More plugins
Markdown support and more language helpers are on the roadmap.
Frequently Asked Questions
1Is my code saved anywhere?
Your projects are saved in your browser's local IndexedDB storage once you save or run them. Existing saved projects autosave after edits, and TSBin does not upload your code to an account.
2Do you have plugins?
Emmet support is available today for HTML and CSS editing. More editor helpers are planned.
3Do you have Markdown support?
Markdown support is coming soon. Today, TSBin supports HTML, CSS, JavaScript, TypeScript, and JSON project files.
4Can I keep working offline?
Yes. TSBin is designed around local-first browser storage, so saved projects can reopen without account setup or a server round trip.
5What file formats can I save or export?
TSBin supports HTML, CSS, JavaScript, TypeScript, and JSON project files. Export keeps those document formats in a zip file.
6Can I download my code?
Yes. Use File > Export Project to download the current workspace as a zip file.
7How can I clear the console?
Type clear() in the console and press Enter. The shorter clear command also clears the console.
8Does TSBin support dark mode and light mode?
Yes. Use the theme button or Settings to switch themes, or press ModShiftS to toggle between light and dark mode.
9Does TSBin support keyboard shortcuts?
Yes. Open the keyboard shortcuts dialog from the header or press Mod/ to see the available shortcuts.
10Do I have to create an account?
No. There is no account setup, and TSBin does not create an account for you automatically.
11How do I request features or report bugs?
Open the File menu and choose Send Feedback. The form supports bug reports, feature requests, and privacy requests.
12Is TSBin for visual demos or code experiments?
It supports both, but it is especially useful when the code matters as much as the rendered result, such as TypeScript examples or browser bug repros.
13Do I need an account to try a prototype?
No. TSBin is designed around local browser storage, so you can start editing without account setup.