roborazzi

Roborazzi

Roborazzi is a screenshot testing library for Android that runs on the JVM using Robolectric Native Graphics, so screenshot tests run as JVM unit tests without a device or emulator. It works with plain Android views, Jetpack Compose (including Compose Previews), and Compose Multiplatform.

The typical workflow: record baseline images with ./gradlew recordRoborazziDebug, then compare or verify against them with compareRoborazziDebug / verifyRoborazziDebug (task names vary by variant; see the build setup reference).

Reference index

Read the reference that matches the task at hand:

File	Read when
references/top.md	You need an overview of what Roborazzi is and why to use it over device tests or Paparazzi.
references/try_it_out.md	You want a minimal quick start or a sample project to try Roborazzi.
references/build_setup.md	Setting up the Gradle plugin and dependencies, or running/understanding the record/compare/verify Gradle tasks and their outputs.
references/how_to_use.md	Writing tests: captureRoboImage for views/Compose/Espresso, RoborazziRule and its options, output paths and file naming, RoborazziOptions (thresholds, image comparators, dump mode).
references/gif_and_video.md	Capturing GIFs and videos of test interactions: captureRoboGif, recordRoboVideo / recordScreenRoboVideo, RoboVideoOptions, GIF vs APNG output.
references/ui_tree_dump.md	UI tree dump: the machine-readable .uitree.json semantics sidecar and annotated Set-of-Mark image for tools & AI agents (roborazzi.dumpUiTree, uiTreeDumpOptions), including the verify-a-UI-fix-by-bounds workflow.
references/github_actions.md	Setting up GitHub Actions CI for Roborazzi: workflows that store baseline screenshots, verify them, and compare snapshot results on pull requests.
references/preview_support.md	Generating screenshot tests from @Preview composables with ComposablePreviewScanner, including setup and customization of preview tests.
references/compose_multiplatform.md	Screenshot testing Compose Multiplatform targets (iOS, desktop/JVM), including feature support per platform.
references/ai_powered_image_assertion.md	Asserting screenshot content with AI models (OpenAI, Gemini) via roborazzi-ai modules.
references/gradle_properties_options.md	Configuring roborazzi.* Gradle properties: task behavior, output directory, file-name strategy, comparison report settings.
references/idea_plugin.md	Using the Roborazzi IntelliJ IDEA / Android Studio plugin to view screenshots in the IDE.
references/faq.md	Troubleshooting: common errors, CI setup questions, Robolectric configuration issues, and other frequently asked questions.

The files under references/ mirror the official Roborazzi documentation at the time this skill was published. The latest version is always available at the documentation site.