GitLab CI Visualizer parses a .gitlab-ci.yml and simulates what the pipeline would do under a given set of conditions — branch, pipeline source, variables — then draws the result as a graph. It answers the question that usually costs a few throwaway commits: which jobs actually run here, and why?

Features

• Interactive graph with stage lanes, dependency edges and artifact flow between jobs
• Evaluates rules:, only: and except:, with a trace of how each decision was reached
• Resolves extends: and expands parallel:matrix definitions
• Job metadata at a glance: allow_failure, retry, coverage, trigger status
• GitLab API integration to resolve include: and downstream pipelines
• VSCode extension with live preview, plus a glvis CLI that opens the graph in a browser

Technologies Used

• Go for the parser, rule evaluation and API
• React and TypeScript for the graph frontend
• GitLab API for remote includes and child pipelines

MIT licensed.