Visual Diff Monitoring detects layout issues, UI regressions, missing content, and unexpected changes — something uptime checks alone can't catch.
Catch visual regressions before they reach production
Your site can be "up" and still be completely broken. Uptime checks tell you if the server responds. Visual Diff shows you if the page actually works.
Modern websites break visually far more often than they break technically. Deployments introduce CSS bugs. CMS edits break layouts. Third-party scripts inject unwanted elements. A/B tests conflict with existing styles.
Your monitoring says "200 OK" but users see broken buttons, missing content, or completely broken layouts. By the time you notice, the damage is done.
PerkyDash captures full-page screenshots on a schedule, compares them to baselines, and uses AI to detect meaningful visual changes. You get instant alerts when layouts break, elements disappear, or unexpected changes occur.
Side-by-side comparison views, diff heatmaps, history timelines, and actionable AI insights. You catch issues before users complain.
Four powerful capabilities working together
Capture entire pages or viewport-only. Full control over timing, dimensions, and device emulation.
Automatic analysis of visual changes with contextual insights and recommendations.
Test desktop, tablet, and mobile layouts. Catch responsive design issues early.
Navigate past screenshots, compare any two dates, and manage baselines flexibly.
Every Visual Diff monitor appears as a card with a thumbnail screenshot, current status badge, and quick stats. Filter by status (OK, Changes Detected, Error), device type, or project.
Perfect for agencies managing multiple client sites. Scan dozens of pages in seconds and immediately identify which ones need attention.
Instant visual overview
Thumbnail previews show you what changed without opening each monitor
Powerful filtering
Find what matters: filter by status, device, or project
Last check: 2 min ago
Last check: 5 min ago
Last check: 8 min ago
Last check: 1 min ago
Screenshot comparison view
The comparison view shows three panels side-by-side: Baseline (your reference version), Current (latest screenshot), and Diff (highlighting all differences). Toggle between modes to understand changes instantly.
Use the before/after slider for manual inspection. Switch to overlay mode to see transparency layers. Enable heatmap mode to visualize pixel-level changes with color intensity.
Three comparison modes
Slider, overlay, and heatmap for different analysis needs
Instant clarity
Understand what changed and why it matters in seconds
Every visual diff includes an AI-generated analysis box. You get a summary of detected changes, potential issues (missing sections, layout shifts, broken UI elements), and actionable recommendations.
No need to decode pixel differences manually. AI tells you what matters: "Hero section moved down 200px", "CTA button missing from header", "Footer layout broken on mobile".
Plain English explanations
AI describes changes in terms you understand
Actionable recommendations
Get suggestions on what to check or fix
AI Analysis
Summary:
3 significant changes detected in the header and hero section
Detected Issues:
Recommendations:
Severity: Medium — User-facing impact, review required
Screenshot History Timeline:
No changes detected
Header layout modified
Reference version
No changes detected
Every screenshot is stored in a navigable timeline. Compare any two dates to see what changed between deployments, content updates, or design iterations.
Perfect for debugging unexpected regressions. When did that button disappear? What did the page look like before the redesign? The timeline has answers.
Compare any two dates
Not just baseline vs current — pick any historical versions
Debug historical issues
Find out exactly when and why something broke
Visual Diff isn't one-size-fits-all. Configure every aspect to match your workflow and reduce false positives.
Capture Mode
Full page or viewport only — your choice
Capture Delay
Wait for animations, lazy-loaded content, or dynamic elements
Custom Dimensions
Set exact width and height for precise testing
Device Emulation
Desktop, tablet, or mobile — test all breakpoints
Pixel Threshold
Control sensitivity to tiny pixel changes
Structural Threshold
Detect layout shifts and element movements
Ignore Zones
Exclude regions from comparison (ads, timestamps, dynamic widgets)
Hide Elements
Remove chat widgets, popups, and cookie banners before capture
Result: Visual monitoring tuned exactly to your needs. Less noise, more signal.
Baselines are your reference screenshots. PerkyDash gives you full control over how they're managed: manually update after deployments, schedule automatic updates, or use rolling baselines that auto-update when no issues are detected.
Different strategies work for different workflows. Choose what fits your release cycle and monitoring needs.
Manual baselines
Update baselines after verified deployments or content changes
Scheduled baselines
Auto-update baselines daily, weekly, or on your schedule
Rolling baselines
Automatically update baselines when no meaningful changes are found
Current Baseline
Set: Dec 10, 18:45
Strategy: Manual
Device: Desktop (1920x1080)
Available Strategies:
When Visual Diff detects changes, you have full control over what happens next.
When changes are intentional (new design, updated content), accept them with one click. The current screenshot becomes the new baseline.
Use case: After verified deployments and legitimate updates
If the change is unintended (broken layout, missing elements), open an incident directly. Track resolution, assign owners, and keep a record.
Use case: Visual regressions and unexpected UI breaks
Temporarily ignore changes or mute noisy monitors for a set period. Useful for ongoing work, A/B tests, or temporary banners.
Use case: Temporary changes you don't want to track
12
OK
3
Changes
1
Error
Header layout modified • 5 min ago
CTA button missing • 12 min ago
The main PerkyDash dashboard includes a compact Visual Diff widget. Get immediate visibility into UI risks without navigating away. Quick stats, recent changes, and one-click navigation to detailed comparisons.
Perfect for busy founders and agency workflows. Check visual status in seconds, not minutes.
At-a-glance status
See all monitors without leaving the dashboard
One-click access
Jump directly to detailed comparisons when needed
Different builders, same need for visual confidence
You ship fast and often. Visual Diff catches UI regressions before users complain. Deploy confidently knowing broken layouts won't slip through.
How you use Visual Diff:
Why it matters:
Ship fast without sacrificing quality. Visual confidence in every release.
You manage multiple client sites. Visual Diff lets you monitor all of them visually from one dashboard. Catch issues before clients do.
How you use Visual Diff:
Why it matters:
Professional reputation. Client trust. Proactive issue detection across your portfolio.
You deploy multiple times a day. Visual Diff is your safety net. Verify frontend changes, catch CSS regressions, and ensure UI quality.
How you use Visual Diff:
Why it matters:
Ship faster without breaking things. Visual quality assurance at scale.
Everything you need to know about Visual Diff Monitoring
Add Visual Diff Monitoring to your workflow and ship confidently. Catch UI regressions before your users do.
Free account. No credit card. Visual confidence in minutes.