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Visual Regression Tester

Checked
patricio0312rev·vlatest·testing·MIT

This tool automatically compares screenshots of UI changes, quickly identifying visual regressions and saving valuable testing time.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add patricio0312rev/skills --skill visual-regression-tester -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

patricio0312rev

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned patricio0312rev/skills at 79ea6af485.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
79ea6af485
Manifest
testing/visual-regression-tester/SKILL.md
Scanned
1 file, 468 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill enables AI agents to automatically compare screenshots of UI changes, identifying visual regressions and saving testing time. It supports integration with popular tools like Playwright, Chromatic, and Percy for capturing baseline screenshots, defining acceptable differences (thresholds), and integrating into continuous integration (CI) pipelines. The tool helps ensure that UI updates don't introduce unintended visual inconsistencies.

When to use it

  • After making changes to a user interface to verify the changes are as expected.
  • As part of an automated testing pipeline in CI/CD workflows.
  • When needing to quickly identify and address unexpected visual differences across different browsers or devices.
  • To establish baseline screenshots for consistent UI comparisons.

Key capabilities

  • Supports Playwright, Chromatic, and Percy tools.
  • Allows configuration of acceptable difference thresholds (maxDiffPixels, maxDiffPixelRatio, threshold).
  • Enables integration with CI pipelines for automated testing.
  • Provides options to capture full-page screenshots or specific UI elements.
  • Includes features like disabling animations and waiting for load states to ensure consistent screenshots.

Example prompts

  • "Run a visual regression test on the homepage using Playwright."
  • "Update the baseline screenshot for the login page."
  • "Compare the current state of the product details page with the last approved baseline."

Tips & gotchas

  • Requires installation and configuration of a supported tool like Playwright. The source content provides example playwright.config.ts settings.
  • Initial setup involves capturing baseline screenshots to serve as references for comparisons.
  • Consider adjusting thresholds based on the specific UI and acceptable level of visual variation.