Display test coverage generated by lcov and xml - works with many languages
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Coverage Gutters features watch

  • Supports any language as long as you can generate an lcov style coverage file
  • Extensive logging and insight into operations via the output logs
  • Multi coverage file support for both xml and lcov
  • Coverage caching layer makes for speedy rendering even in large files
  • Relative coverage file resolution for those with complex file paths
  • Preview coverage reports inside the editor
  • Huge amount of workspace settings to customize the features to your liking
  • Colour compatibility with light and dark themes

Common Commands

Watch (activated via command palette or shortcut icon on the status bar): Activating watch allows the extension to keep track of coverage changes and update it's cache. It also will automatically apply coverage to a file if some exists.

Display (activated via command palette or shortcut key): Displays coverage for the current activate file only, does not update if the coverage files change.

Preview Report (activated via command palette): Shows you a html preview of your coverage reports in your editor.

Officially Supported Languages (Backed by tests ran nightly)

See examples directory on how to setup a project.

Tips and Tricks

Using Breakpoints: Currently to both use the extension and code debugging breakpoints you need to disable the gutter coverage and enable the line coverage via the settings ( coverage-gutters.showGutterCoverage and coverage-gutters.showLineCoverage respectively).


  • vscode 1.27.0 and up
  • macos, linux or windows

Extension Settings

See extension setting options in IDE.

Known Issues

Open Bugs

Release Notes


Contribution Guidelines


Icon made by Dave Gandy from www.flaticon.com is licensed by CC 3.0 BY