Chrome Extension

Capture, Compare &
Debug DOM Changes
Instantly

A powerful Chrome extension that captures DOM snapshots at any point in time and performs detailed structural comparisons. Debug regressions after deployment, document changes for bug reports, and ensure visual consistency across releases.

100% Private AES-256 Encrypted Stored Locally
DOM Snapshot popup
Snapshot list
Diff view
Screenshot preview
Chrome Web Store
For Developers & QA Teams
Chrome 88+ Compatible
No Data Leaves Your Browser

The Problem

Tracking DOM changes across deployments is tedious and error-prone without the right tools.

Hidden Regressions

DOM changes after deployment go unnoticed until users report visual bugs. Manual checking is unreliable.

Time-Consuming Manual Checks

Comparing DOM structure before and after changes requires tedious manual inspection through DevTools.

No Visibility Into Changes

Without snapshots, there is no way to see exactly what changed in the DOM between two points in time.

The Solution

DOM Snapshot & Diff captures, compares, and visualizes DOM changes so you never miss a regression.

Instant Snapshots

Capture the complete DOM structure in one click. Scope to specific selectors for focused analysis.

Structural Tree Diff

Side-by-side tree comparison with added, removed, and changed nodes highlighted in distinct colors.

Visual Overlay

See DOM changes highlighted directly on the live page with color-coded overlays for immediate context.

Key Features

Everything you need to capture, compare, and debug DOM changes.

DOM Snapshot Capture

Capture complete DOM structure at any point with one click. Scope to specific CSS selectors for focused snapshots.

Structural Tree Diff

Side-by-side comparison with added, removed, and changed nodes highlighted in color. Up to 10 free diffs per day.

Visual Overlay Diff PRO

See DOM changes highlighted directly on the live page with color-coded overlays for immediate visual context.

Noise Filtering PRO

Filter out irrelevant changes from ads, analytics scripts, CSRF tokens, and dynamic content. Focus on what matters.

Professional Reports PRO

Export diffs as HTML, JSON, Markdown, or PDF. Share clear, annotated reports with your team.

Privacy-First Architecture

All snapshots are encrypted with AES-256-GCM and stored locally on your machine. Your DOM data is never transmitted to any server.

See It In Action

Watch how DOM Snapshot & Diff works in a real-world debugging scenario.

How It Works

1

Install

Add DOM Snapshot & Diff from the Chrome Web Store. Takes less than 10 seconds.

2

Capture

Navigate to any page and take DOM snapshots. Use selectors to scope your capture.

3

Compare

Select two snapshots and run a diff. See structural changes, visual overlays, and export reports.

Real-World Use Cases

See how teams use DOM Snapshot & Diff in their daily workflow.

Pre-Deployment Diff

Compare DOM before and after deployment to catch regressions before users do.

Bug Report Evidence

Export annotated diffs and screenshots for clear, reproducible bug reporting.

A/B Test Analysis

Compare DOM between test variants to analyze structural changes between versions.

Script Change Tracking

Track DOM changes caused by third-party scripts, tag managers, and injected content.

Auto-Snapshot

Automatically capture snapshots on URL or route changes for continuous monitoring.

Sensitive Data Redaction

Automatically redact sensitive data like tokens, emails, and PII from captured snapshots.

Simple, Transparent Pricing

Start free. Upgrade when you need more power.

Free Tier
$0
Forever
  • Capture DOM snapshots
  • Tree diff (10 times/day)
  • Snapshot management
  • Selector scoping
  • Keyboard shortcuts
Get Started - Free

Frequently Asked Questions

Absolutely. DOM Snapshot & Diff runs 100% client-side in your browser. All snapshots are encrypted with AES-256-GCM and stored locally. No data is ever transmitted to any external server. Your DOM data never leaves your machine.
The extension requires "activeTab" permission to capture DOM snapshots of the current page. It does not access your browsing history, passwords, bookmarks, or any other personal data. Permissions are requested only when needed.
DOM Snapshot & Diff works with Google Chrome version 88 and above. It is also compatible with Chromium-based browsers including Microsoft Edge, Brave, and Opera.
The extension builds a structural tree representation of the DOM at two points in time, then compares them node-by-node. Added nodes are highlighted in green, removed nodes in red, and modified nodes in yellow. You can expand each node to see attribute-level changes.
Pro tier adds visual overlay diff, noise filtering, export reports (HTML, JSON, Markdown, PDF), auto-snapshot on route changes, comparison templates, unlimited tree diffs per day, and priority email support. It is a one-time payment of $14.99 for lifetime access with all future updates included.
Email us at [email protected] or use our support form. Pro tier users receive priority support with faster response times. We typically respond within 24 hours.

Ready to Debug DOM Changes Like a Pro?

Join developers who trust DOM Snapshot & Diff for reliable DOM comparison and regression detection.