Visual Regression Lab

Community

TheGoat395

visual-regression-lab

Compare captures; stitch lazy/animated pages.

Overview

Publisher	TheGoat395
Repository	`Codex-Skills`
Skill name	`visual-regression-lab`
Stars	136
Forks	48
Bundled files	5
License	MIT
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
5 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by TheGoat395 on GitHub. Read the source before you install it.

Installation

Install the Visual Regression Lab AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/TheGoat395/Codex-Skills/tree/main/skills/visual-regression-lab
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git /tmp/Codex-Skills
mkdir -p .claude/skills
cp -r /tmp/Codex-Skills/skills/visual-regression-lab .claude/skills/visual-regression-lab

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Visual Regression Lab in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Visual Regression Lab on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Visual Regression Lab is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Visual Regression Lab

Use this skill to capture comparable browser evidence and inspect visual regressions. Scope routes, viewports and states to the requested comparison; a capture alone does not prove quality.

Required Checks

Start or identify the local server.
Open the relevant route in a browser or Playwright.
Capture the relevant supported viewports and states, using the same conditions for baseline and candidate.
Check console errors, failed requests, layout overflow, missing media, and text clipping.
Inspect first viewport composition, hierarchy, spacing, typography, image crops, and CTA visibility.
Test key interactions: nav, forms, menus, tabs, accordions, hover states, focus states, and modals.
For animation-heavy work, test reduced-motion behavior and watch for jank.
For canvas/WebGL/video, verify nonblank rendered pixels and stable framing.
Report observed differences with evidence. Repair only when authorized, then recapture affected states; no fixed polish-pass or edit quota applies.

Read baseline contract. When a project has Playwright installed, run node "<skill-root>/scripts/capture-settled-baseline.mjs" <url> <output-dir> to capture settled desktop/mobile/reduced-motion states and a machine-readable inspection manifest.

When native full-page capture is blank, sparse, incomplete, or inconsistent with real scrolling, read stitched full-page capture and run node "<skill-root>/scripts/capture-stitched-full-page.mjs" --url <url> --output <image>. Treat the stitched image as evidence only after visual inspection.

Output

Report:

routes/viewports checked
screenshots or saved paths when available
issues found and fixed
commands run
anything not tested

Resolve <skill-root> to this skill folder's actual absolute location; preserve project-local module resolution for Node capture tools.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Visual Regression Lab AI skill do?

Compare captures; stitch lazy/animated pages.

Why use Visual Regression Lab on TypingMind?

Because you install it once and use it with any model. Visual Regression Lab is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Visual Regression Lab in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/TheGoat395/Codex-Skills/tree/main/skills/visual-regression-lab. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Visual Regression Lab?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Visual Regression Lab?

As many as you like. As long as a model supports skills, you can use Visual Regression Lab with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Visual Regression Lab AI skill free?

Yes. It is published on GitHub by TheGoat395 under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Visual Regression Lab

Required Checks

Output

Bundled files

Frequently asked questions

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