Learn to code in the browser with Development tools
Installing five language runtimes just to try a twenty-line example is a rough start. Swiftener Development gives you playgrounds and utilities in the tab so you can practice without a heavy local setup.
Good first sessions
- Open the JavaScript or Python playground and run a hello-world.
- Paste a small snippet you are debugging from class or work.
- Use JSON, regex, or Base64 tools when you need a quick transform.
- Export or copy results into your own notes — playgrounds are for drafts.
What stays local
Many Development editors keep drafts in the browser. That is great for privacy and speed. It also means clearing site data can wipe unsaved work. Copy important snippets elsewhere.
When you are ready to build a full app, switch to Tutorials and follow a project path with GitHub snapshots. Related guide: Build a full app with Swiftener project tutorials.