Chrome Extension Demo · AI Detection · Fact Check

See Through
the Lie.

A browser extension that detects AI-generated & manipulated images in real time, explains suspicious parts in plain English, and cross-checks claims against live fact-check data.

This website is a demo-only showcase for the PixelProof extension. The extension is the actual product; this page exists to present the workflow cleanly for reviewers and judges.

Reality Defender API Gemini AI Google Fact Check Chrome MV3 Smart Cache Fallback Mode MIT License Open Source

View Source ↗

AI APIs Orchestrated

~50ms

Cached Rescan Speed

100%

Demo Uptime (Fallback)

MV3

Chrome Manifest

Quick Setup

Unpacked Install Steps

PixelProof is demo-only for now. Install it locally as an unpacked Chrome extension, then open the landing page separately for the product story and credits.

①

Clone the repo

Run git clone on the PixelProof repository and open the folder in VS Code or File Explorer.

②

Open Extensions

Go to chrome://extensions in Chrome or Edge and enable Developer mode.

③

Load unpacked

Click Load unpacked and select the cloned PixelProof folder with manifest.json.

④

Confirm the icon

Check that the PixelProof icon appears in the toolbar, then open Settings to add API keys if needed.

Credits

Built for Next Byte Hacks V2

👤

Owner

Harsh Bhanushali

🏁

Hackathon

Next Byte Hacks V2

🧰

Release Mode

Demo-only right now, distributed as an unpacked extension for judges and reviewers.

✉️

Contact

harsh@dualmindlab.tech · harshu.dev@outlook.com

Interactive Demo

PixelProof, Live in Your Browser

No install needed. Interact with the scanner, upload, and settings panels to see the extension workflow end to end.

🔒 breaking-news.example.com/world/latest

📰 Breaking News — 4 images detected awaiting scan

PixelProof

READY

—

Page Trust Score

Scan to analyse images

Fallback ModeAPIs connected • live mode

Initialising...0%

🤖 Gemini Explanation

PixelProof — Single Image Analysis

📁

Drop an image to analyse

or click to browse · PNG, JPG, WEBP supported

Confidence

PixelProof — Settings (chrome://extensions)

PixelProof Settings

API Keys (stored locally in chrome.storage.local)

✓ Saved locally

Fallback Mode

Enable simulated detection when APIs failKeeps demos working without live API access

Cache

12 results cached locally

How It Works

4-Step Detection Pipeline

🔍

Discover

Content script scans DOM, finds every image, extracts src or converts canvas to base64.

🛡️

Detect

Reality Defender analyses pixel-level patterns — GAN artifacts, frequency anomalies, inconsistent noise.

🤖

Explain

Gemini translates the raw verdict into plain English anyone can understand and act on.

📰

Verify

Google Fact Check cross-references related claims, surfacing existing debunks and context.

Under the Hood

Live Service Worker Log

background.js — Service Worker

[00:00:01] ✓ PixelProof service worker initialised

[00:00:01] → Loading keys from chrome.storage.local...

[00:00:01] ✓ REALITY_DEFENDER_API_KEY loaded

[00:00:01] ✓ GEMINI_API_KEY loaded

[00:00:01] ✓ FACT_CHECK_API_KEY loaded

[00:00:02] ⚡ Cache: 12 results in chrome.storage.local

Architecture

Built on Chrome Manifest V3

🧩

Content Script

Injected into every page. Discovers images, renders verdict overlays, handles per-image rescans and user interactions without blocking page load.

DOM traversalCanvas APICSS overlaysMutationObserver

⚙️

Background Service Worker

Orchestrates the full scan pipeline. Checks cache first, calls APIs in sequence, assembles full result objects, handles fallback simulation.

MV3 service workerFetch APIMessage passingRequest dedup

⚡

Smart Cache Layer

Every scan result stored in chrome.storage.local keyed by image hash. Rescans return instantly. Deduplication prevents redundant API calls for the same image.

chrome.storage.localSHA hash keys~50ms rescans

🛡️

Fallback & Security

When any API is unreachable, simulated verdicts are generated locally so the demo never breaks. Keys never leave the device — no bundling, no exposure.

Local simulationDiagnostic loggingZero key exposure

Features

Everything, In the Browser

🖼️

Live Image Scanning

Scans every image on any page instantly. Works on news sites, social feeds, anywhere images load in Chrome.

🤖

AI Explanations

Gemini explains why an image looks suspicious — not just a score, but understandable reasoning in plain English.

📰

Fact-Check Context

Cross-references claims against Google Fact Check. Surfaces existing debunks from trusted sources instantly.

⚡

Instant Cache

Scan once, results persist forever. Chrome storage-backed cache makes rescans ~50ms with zero API calls.

🔑

Local Key Storage

API keys stored only in chrome.storage.local. Never bundled. Never transmitted. Never exposed in Git.

🛡️

Graceful Fallback

Network down or key missing? PixelProof simulates locally. Presentations never break mid-demo.

See Throughthe Lie.

See Through
the Lie.