CI/CD tools
Enter one expression and edit a mock context to see exactly what it returns.
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Expressions and mock context stay in this browser. Nothing is sent to GitHub or our server.
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A branch guard can look right and still skip a job after a push. Use the GitHub Actions expression tester when you need to inspect one if condition with the same event and context fields your run will use.
A GitHub Actions if condition tester is useful before a commit: change github.ref, an input, or matrix.os and see the result without starting a runner. This GitHub Actions expression evaluator does not infer a real event from your repository.
The mock values are visible beside the expression and the raw return value stays separate from its condition truth.
The same branch condition returns true for refs/heads/main and false for a feature ref. In this GitHub Actions expression tester, you can edit github.ref directly instead of making another test commit.
A logical OR may return a non-Boolean operand, while an if condition treats that value as true. The GitHub Actions expression tester shows both outputs instead of collapsing them into one checkmark.
Paste a bare expression, a complete `${{ … }}` wrapper, or one `if:` line. Text outside a wrapper is rejected instead of being silently reduced to part of a condition.
Edit the JSON object containing github, env, inputs, and matrix. The success, failure, and cancellation selector supplies a mock state for status functions only.
The raw value might be a string such as "deploy" while its if truth is true. After changing an input, wait for auto evaluation or switch it off and press Ctrl/Cmd+Enter.
The parser handles contains, startsWith, endsWith, format, join, toJSON, fromJSON, case, operators, and object filters with GitHub Actions rules.
Set github.event_name or github.ref, then test a GitHub Actions mock context without a push. Missing top-level context names are reported rather than filled with invented runner data.
View the type and JSON value alongside the truthiness used by an if condition. Logical && and || can return an operand instead of a Boolean.
Enter the condition and a representative mock context here. The GitHub Actions expression tester shows the returned value and its truthiness without creating a workflow run.
A nonempty literal can be truthy if the intended comparison is left outside `${{ }}`. Put the whole comparison into one expression; this tool rejects mixed wrapper text.
A false expression can be one cause, but an implicit success check, job dependencies, or event filters can also skip work. This page evaluates the expression only, not the full run graph.
Supply that variable in the JSON context and pass it to contains(). Array membership and string substring checks both use GitHub’s case-insensitive comparison rules.
They reflect previous run status in GitHub. Here they read only your selected mock status; always() returns true, even for the cancelled option.
Found a workflow this tool gets wrong?
Return to the GitHub Actions expression tester with a real condition and a sanitized context, then inspect the raw result before committing.
All parsing happens locally in your browser.