Free CI/CD Tools

Calculators and utilities for CI/CD engineers.

Free interactive tools for CI/CD: a GitHub Actions cost calculator, exit-code lookup, cron schedule builder, workflow YAML validator, and a runner-size recommender. No signup required.

Cost & sizing

Cost calculator and runner recommender.

Cross-OS runner costSplit your GitHub Actions minutes across Linux, Windows, and macOS to see which OS drives your bill. macOS co… Cache savingsCaching dependencies cuts minutes off every CI build. Enter your uncached and cached restore times and build… Flaky test costFlaky tests cost you twice: wasted CI minutes and stalled engineers. This calculator turns your flaky-failure… Monthly bill estimatorEstimate your monthly GitHub Actions bill from builds per day, minutes per build, and runner OS. See list-pri… Runner size recommenderGet a recommended GitHub Actions runner size for your workload - pick the job type and parallelism to avoid p… Self-hosted break-evenWhen does self-hosting GitHub Actions runners pay off? This calculator weighs compute savings against the ops… Test sharding ROISplitting your test suite across more shards speeds up wall-clock time but raises billed minutes and cost. Th…

Lookups

Exit codes and quick references.

Exit code lookupInstant lookup for CI/CD process exit codes - enter a code (137, 127, 143…) to see what it means, whether it…

Generators & validators

Cron builder, YAML validator.

Cron schedule builderBuild a GitHub Actions schedule cron expression visually and copy the ready-to-paste on: schedule YAML. Runs… Workflow generatorGenerate a complete, caching-enabled GitHub Actions workflow for your stack - pick a language, test command,… Workflow YAML validatorPaste your GitHub Actions workflow YAML for a quick lint - catches tabs, missing on:/jobs:/runs-on:, and empt… README badge generatorGenerate copy-paste README badges for your GitHub repo: build status, license, release, last commit, issues,…

Analyzers & evaluators

Workflow analyzer, expression evaluator, matrix previewer.

Analyze my GitHub ActionsPaste a public owner/repo for a live audit of its GitHub Actions: success and failure rates, average duration… Critical path visualizerPaste your CI jobs with their dependencies and durations to find the critical path, total wall-clock time, bi… Cron next-run calculatorPaste a 5-field cron expression and see the next 10 fire times in UTC and your local timezone, plus a plain-E… Docker Hub rate limit checkerUnderstand Docker Hub anonymous and authenticated pull limits, and copy the exact curl commands to read your… Expression evaluatorEvaluate any GitHub Actions ${{ }} expression against a context and see the exact result and type. Correct pr… Matrix previewerPreview exactly which jobs your GitHub Actions matrix expands to. Computes the Cartesian product, applies inc… Paths filter glob testerTest GitHub Actions paths filter globs against real file paths. Get accurate match/exclude results for *, **,… Workflow trigger simulatorSimulate whether a GitHub Actions workflow will run for a given event, ref, and changed files. Paste your on:… Workflow cost analyzerPaste your GitHub Actions workflow YAML and get a per-job cost breakdown, monthly GitHub-hosted spend, the La… Workflow security auditPaste your GitHub Actions workflow YAML for a severity-tagged checklist of unpinned actions, deprecated actio… Secret leak scannerScan a diff, file, or log for leaked secrets entirely in your browser. Detects AWS keys, GitHub and Slack tok…

Live status & data

CI service status, deprecations, live pricing.

CI status dashboardA live status board for GitHub, npm, GitLab, CircleCI, Cloudflare, Docker, and Bitbucket. See which CI/CD dep… Deprecation trackerA searchable, filterable tracker of GitHub Actions deprecations and end-of-life dates: Node runtimes, checkou… Runner pricing comparisonCompare per-minute runner pricing for GitHub-hosted, self-hosted, and Latchkey managed runners. Enter your mo…

Explore other topics

GitHub ActionsWorkflow, runner, and YAML errors - diagnosed and fixed. Node.js & npmnpm, yarn, and pnpm failures in CI - solved. DockerBuild, run, compose, and registry errors - explained. Pythonpip, poetry, venv, and pytest failures - fixed. Java & JVMMaven, Gradle, and JVM failures in CI - resolved. GoGo build, module, and test failures - diagnosed.