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Code-Werkstatt - Atelier de code

Type HTML, CSS and JavaScript and see the result instantly - no local setup, no build tool. A browser editor with live preview, a built-in console and 20+ ready-made examples, from IBAN formatting to an official stamp. This page is a preview with an example and an explanation; the actual workshop opens after you sign in with Plus.

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Outils de développementCode-Werkstatt - Atelier de codeDémo fictive | Plus
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Three editors, live preview

1Three editors, live preview
2Built-in console
3Four layout modes
420+ presets
Aperçu en lecture seule. Pour l'utiliser, ouvre l'outil.

Cet aperçu sécurisé montre à quoi sert l'outil, sans exécuter d'actions liées à un compte.

Ce que sait faire Code-Werkstatt - Atelier de code

You do not need to spin up a project for a quick experiment. No npm install, no config maze, no waiting. Code Workshop runs entirely in your browser: you type into three editor tabs - HTML, CSS and JavaScript - and the preview re-renders live on every change. Perfect for the moment when you just want to try an idea.

The editors come with syntax highlighting and a clean monospace layout so your code stays readable even when it grows past a few lines. Layout modes let you decide where you need the room: editor and preview side by side (horizontal), stacked (vertical), or hide one side entirely and use the full window just for writing or just for viewing.

The built-in console captures your console.log output and shows it right next to the preview - including error messages when your JavaScript trips up. That means you can debug without detouring into the browser dev tools and see immediately where something breaks.

The real time-saver is the preset library. More than 20 presets cover typical web building blocks and are deliberately in the Werkzeu.ge spirit: a live VAT calculator, a German address and postcode validator, an IBAN formatter, a business-letterhead generator, a CSS gradient generator, a password generator, an ELSTER XML viewer and more. You load a preset, see working code instantly and build from there.

Because everything runs client-side, not a single character leaves your machine. Your code is not sent to a server, not logged, not stored unless you trigger it yourself. That keeps the workshop fast and data-frugal - and you can prototype even sensitive code without a second thought.

Code Workshop is not a replacement for a full IDE on a large project, and it is not meant to be. It is the digital scratchpad for web code: open fast, typed fast, thrown away or built on fast. For snippets, learning exercises, small demos and quickly checking how a particular CSS or JS thing actually works, this is exactly the right place.

Fonctions

Three editors, live preview

HTML, CSS and JavaScript in separate tabs. The preview re-renders instantly on every change.

Built-in console

console.log output and JavaScript errors land right next to the preview - no detour through the dev tools.

Four layout modes

Side by side, stacked, editor-only or preview-only. You decide where you need the room.

20+ presets

VAT calculator, IBAN formatter, address validator, gradient generator, ELSTER viewer and more - ready to build on.

Coloration syntaxique

Clearly highlighted monospace code so even longer snippets stay readable.

Dans le navigateur, sans compte

No setup, no build tool, no signup. Your code stays on your device.

Comment ça marche

  1. 1

    Load a preset or start blank

    Pick one of the 20+ presets as a starting point or type straight into the empty editors.

  2. 2

    Edit HTML, CSS and JS

    Switch between the three tabs and write your code. The preview updates automatically.

  3. 3

    Vérifier le résultat

    Watch the live preview and keep an eye on the console to follow output and errors.

  4. 4

    Adjust the layout

    Set editor and preview side by side or stacked, or hide one side to focus.

Pour qui

→Developers who want to try an idea fast without setting up a project.
→Learners who want to practice HTML, CSS and JavaScript live and see errors instantly.
→Anyone testing a snippet from the web before it goes into a real project.
→Small demos and prototypes you want to show someone without deploying.
→People reusing one of the presets (IBAN, VAT, gradient) as a building block.

Questions fréquentes

Can I include external libraries?

You work with plain HTML, CSS and JavaScript in the preview. External scripts can be added via the usual HTML tags as long as they are reachable, but the core of the workshop is deliberately lightweight and package-manager-free.

Is my code saved or uploaded?

No. Code Workshop runs entirely in your browser. Your code is not sent to a server and not stored without your action.

Do I see JavaScript errors?

Yes. The built-in console shows both your console.log output and runtime errors, right next to the preview, so you immediately know where things break.

What are the presets for?

The 20+ presets are working examples - from a VAT calculator to IBAN formatting to a CSS gradient generator. You load them as a starting point, understand the structure and build from there instead of starting from scratch.

Does Code Workshop replace a real IDE?

No, and that is not its goal. It is the fast scratchpad for web code - for snippets, learning exercises and small demos. For a large project with a build process you stick with your IDE.

Does the workshop work offline?

Since everything runs client-side, editing and preview work without server contact. Only externally referenced resources need a connection.

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