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Extension Case StudyReact + Vite Chrome Extension

Frontend Audit Extension

Production-style Chrome extension that analyzes live webpages for SEO, accessibility, image, and page structure issues using content scripts and browser APIs.

This project demonstrates frontend engineering beyond standard web pages: popup UI states, content script execution, browser storage, export flows, and issue reporting designed for real audit workflows inside Chrome.

Browser API Scope

Content scripts, Chrome storage, export actions, and stateful popup flows inside Manifest V3

Frontend Breadth

Scoring, issue grouping, restricted-page handling, and polished state management in one tool

Public Proof

Chrome Web Store listing plus public GitHub repository for direct recruiter verification

Audit Results
Frontend Audit Extension placeholder visual for audit dashboard style output
Placeholder visual block used to keep the case study layout consistent without inventing screenshots.
Popup States
Frontend Audit Extension placeholder visual for multi-panel analysis states
Represents the extension focus on loading, empty, saved audit, error, and result states inside the popup UI.
Issue Workflow
Frontend Audit Extension placeholder visual for structured issue workflows
Used as a neutral visual block for severity-based recommendations, restricted-page handling, and export-ready issue lists.
Local History
Frontend Audit Extension placeholder visual for persisted audit history
Illustrates the extension's local history and repeat-audit workflow without claiming unavailable screenshots.

Overview

A premium frontend case study built to show product depth and implementation quality.

The emphasis is on how the interface is structured, how the flows connect, and what the frontend decisions communicate about product readiness.

Frontend Audit Extension is positioned as a production-style browser extension that expands the portfolio beyond standard websites and mobile apps into browser tooling, audit workflows, and extension-specific frontend architecture.

The project is grounded in real proof links: a public Chrome Web Store listing and a public GitHub repository. The emphasis is on content scripts, browser APIs, audit scoring, and UI states rather than invented business claims.

Project Snapshot

Role

Frontend Engineer

Format

React + Vite Chrome Extension

Primary focus

Chrome Extension Frontend Tool

ReactTypeScriptViteChrome Manifest V3Tailwind CSSChrome Storage APIContent Scripts

Project Media

Real media slots wired into the case study for visual depth and easy future asset replacement.

Each image is served from the public directory so stronger screenshots or recordings can be swapped in later without touching the layout system.

Audit Results
Frontend Audit Extension placeholder visual for audit dashboard style output
Placeholder visual block used to keep the case study layout consistent without inventing screenshots.
Popup States
Frontend Audit Extension placeholder visual for multi-panel analysis states
Represents the extension focus on loading, empty, saved audit, error, and result states inside the popup UI.
Issue Workflow
Frontend Audit Extension placeholder visual for structured issue workflows
Used as a neutral visual block for severity-based recommendations, restricted-page handling, and export-ready issue lists.
Local History
Frontend Audit Extension placeholder visual for persisted audit history
Illustrates the extension's local history and repeat-audit workflow without claiming unavailable screenshots.

What I Built

Structured product surfaces designed to feel cohesive, not assembled screen by screen.

Popup interface and result states

A polished popup UI with loading, empty, error, saved audit, and result states to make extension usage feel complete rather than utilitarian.

Audit analysis workflow

Multi-category audit scoring across SEO, accessibility, images, and page structure with severity-based issue recommendations.

Browser API integration

Chrome Storage API and content script integration for local history, restricted-page handling, and page-level audit execution.

Export-friendly reporting

JSON and CSV export support for sharing audit findings beyond the extension itself.

Audit Workflow Highlights

Audit Workflow Highlights

The strongest signal here is the combination of browser integration, analysis logic, and user-facing result states inside a compact extension experience.

Highlight 1

Live page analysis

Content scripts analyze the current page for SEO, accessibility, image, and structure issues directly inside the browser context.

Highlight 2

Severity-based recommendations

Issues are grouped and prioritized so the extension surfaces actionable problems instead of overwhelming the user with raw checks.

Highlight 3

Restricted-page handling

The extension accounts for pages where audits cannot run normally, which improves credibility compared with a happy-path-only tool.

Highlight 4

Saved audits and exports

Local history and JSON or CSV export flows make the tool useful beyond a single one-off scan.

Technical Highlights

Technical Highlights

A recruiter or hiring manager should be able to see the engineering depth quickly without reading a wall of text.

Manifest V3 frontend structure

The codebase uses a modern React and Vite setup inside Chrome Manifest V3 constraints, balancing developer experience with extension runtime requirements.

Content script and popup coordination

The extension coordinates page analysis and popup display states cleanly so audit results remain understandable and predictable.

State persistence with Chrome Storage API

Saved audit history and related flows rely on browser-native storage rather than one-session-only state.

Structured exports and UX states

Export support and deliberate handling of loading, empty, error, and saved states strengthen the product quality of the extension.

Frontend Decisions

Extension UX and Frontend Decisions

These decisions show the product and architectural thinking behind the implementation.

Decision 1

Tooling with a product mindset

The extension is framed as a usable frontend product, not just a technical demo, which is why popup states and issue presentation matter so much.

Decision 2

Actionable output over raw scanning

Severity and category framing help the user understand what to fix first instead of reading an unstructured audit dump.

Decision 3

Proof anchored in real distribution

The Chrome Web Store listing gives stronger credibility than a local-only extension demo and shows distribution-oriented frontend delivery.

Decision 4

Consistent portfolio treatment

Even without bespoke screenshots, the project uses the same case study structure as the other flagship projects to keep the portfolio cohesive.

Why It Matters

Why this case study is worth attention in a hiring context.

Value 1

It expands the portfolio beyond websites into browser extension frontend engineering.

Value 2

It shows practical use of browser APIs, content scripts, local persistence, and structured UX states.

Value 3

It adds public Chrome Web Store proof that complements the web and mobile projects.

Links

Review the live build, inspect the codebase, or move directly into contact and resume download.