GitHub Actions Workflow Generator

Generate a GitHub Actions CI workflow without hunting for the right action versions. Pick a language, choose which runtime versions to test in a matrix, set the triggers, and tick the steps — install, lint, test, build. The tool writes a valid workflow using the current official setup-* actions with dependency caching built in. Save it under .github/workflows/ and it runs on your next push. Generated in your browser.

Triggers: Steps:
.github/workflows/ci.yml

How to use the GitHub Actions Workflow Generator

Choose your language and list the runtime versions to test, separated by commas — these become a build matrix, so the whole job runs once per version and a break in any version fails the check. Pick whether to test on one OS or all three (another matrix dimension), select your triggers, and tick the steps you need. The workflow regenerates live; save it as .github/workflows/ci.yml in your repository and commit it.

The generated steps use the official actions — actions/checkout and the language's setup-* action with caching enabled — and conventional commands like npm ci and npm test. Adjust the script lines to match your project's actual lint and test commands. Once committed, the workflow appears under the repository's Actions tab and runs automatically; add a status badge to your README from the workflow's page if you want the result visible.

How GitHub Actions workflows are structured

GitHub Actions runs automation defined in YAML files under .github/workflows/. Each file is a workflow triggered by events — a push, a pull request, a schedule, or a manual dispatch. A workflow contains one or more jobs, which run in parallel by default on fresh virtual machines called runners, and each job is a sequence of steps: either a shell command (run) or a reusable action pulled from the marketplace (uses).

Two building blocks appear in almost every CI workflow. The actions/checkout action clones your repository into the runner so later steps can see the code, and a language setup-* action — setup-node, setup-python, setup-go, and so on — installs the requested runtime and, when told to, restores a dependency cache. Caching matters: without it every run re-downloads your whole dependency tree, and the modern setup actions make it a one-line option keyed on your lockfile.

The matrix strategy is what makes Actions especially good for libraries and cross-platform code. By listing several runtime versions, or several operating systems, you tell GitHub to fan the job out into one run per combination, all in parallel, so you find out immediately if your code breaks on an older Node or on Windows. Combined with branch protection rules that require the workflow to pass before merging, this turns a green check into a real guarantee that every supported configuration builds and tests cleanly. This generator wires up checkout, setup with caching, the matrix, and your chosen steps so you start from a correct, current workflow rather than a copied snippet with outdated action versions.

Common use cases

  • New projects. Add CI in one step with up-to-date official actions and caching.
  • Library testing. Run the suite across several language versions with a matrix.
  • Cross-platform checks. Verify a build on Ubuntu, macOS, and Windows together.
  • Standardising CI. Give every repo the same lint, test, and build workflow shape.

Frequently asked questions

Where does the workflow file go?
In .github/workflows/ at the root of your repository, with a .yml or .yaml extension — for example .github/workflows/ci.yml. GitHub discovers every file in that directory and runs the ones whose triggers match the event. The job name and file name are up to you.

What does the matrix strategy do?
It runs the same job once for each value you list — each Node version, each OS, or every combination of both — in parallel. If any combination fails, the overall check fails, so a matrix is how you guarantee your code works across all the versions and platforms you support.

Why use the setup actions instead of installing manually?
The official setup-node, setup-python, and similar actions install the exact runtime version requested and provide built-in dependency caching keyed on your lockfile with a single line. They are maintained by GitHub, handle the matrix variable automatically, and are far less error-prone than scripting installs by hand.

How do I require the workflow to pass before merging?
Enable a branch protection rule (or ruleset) on your default branch and mark the workflow as a required status check. After that, GitHub blocks merging a pull request until the workflow succeeds, which is what turns CI into an enforced gate rather than just information.

Are GitHub Actions free?
Public repositories get unlimited free minutes on standard runners. Private repositories include a monthly minute allowance depending on your plan, after which usage is billed. The workflow YAML is identical either way; only billing differs, so cost depends on how often and how long your jobs run.
Embed this tool on your site

Free to embed, no attribution required (but appreciated). Paste this where you want the tool to appear: