Catch visual regressions before your users do.
Know exactly when your website's appearance changes. Capture screenshots automatically, compare against baselines, and catch visual bugs before your customers do.
See what you've been missing
Catch visual regressions that automated tests simply can't detect.
Baseline Snapshots
Set a "known-good" screenshot as your baseline. We'll compare every new capture against it to spot changes instantly.
Smart Comparison
Our intelligent algorithm ignores minor rendering differences while flagging meaningful visual changes.
Flexible Scheduling
Choose how often to capture—from every few minutes to daily. Match frequency to your deployment schedule.
Capture History
Browse a timeline of past screenshots up to 30 days. See exactly when changes occurred and compare any two captures side-by-side.
Privacy Controls
Keep screenshots private. Privacy is key to our infrastructure design ensuring only you have access to your data.
Email Alerts
Get notified the moment a visual change exceeds your tolerance threshold. No more discovering broken layouts days later.
Spot the difference instantly
Our comparison view highlights exactly what changed between captures.
Visual diffs that make sense
When something changes, we don't just tell you—we show you. Side-by-side comparison with pixel-perfect highlighting of differences. No more hunting through screenshots to find what broke.
Try It FreeSet up in minutes, not hours
Getting started is simple. No complex configuration required.
Add Your URL
Enter any webpage you want to monitor. Works with public sites and password-protected pages.
Set Your Baseline
Capture your first screenshot and mark it as the "known-good" baseline for future comparisons.
Configure Alerts
Set your tolerance threshold and schedule. We'll email you when changes exceed your limits.
Relax
We watch your pages 24/7. Review captures anytime and update baselines as your site evolves.
Why pay when you can get it free?
Everything you need and more, without the enterprise price tag.
| Features |
Free
Free
Essential monitoring, no cost
|
Solo
£7.50/mo
For personal projects and freelancers
|
Plus
£30.00/mo
Most popular
Best value for growing teams
|
Premium
£90.00/mo
Maximum insight at maximum speed
|
|---|---|---|---|---|
| Uptime monitors | 2 from 15 mins |
15 from 5 mins |
100 from 1 min |
250 from 30 secs |
| Server monitors | 1 | 8 | 60 | 150 |
| Screenshot monitors | 1 from 12 hours 3 day history |
5 from 1 hour 7 day history |
30 from 10 mins 14 day history |
100 from 5 mins 30 day history |
| DNS redirects | 1 | 10 | 75 | 150 |
| Short links | Unlimited | Unlimited | Unlimited | Unlimited |
| Email alerts | ✓ | ✓ | ✓ | ✓ |
Frequently asked questions
Everything you need to know about Screenshot Monitoring.
Yes! We offer a limited screenshot monitoring service completely free. More features are available in our paid plans.
We capture screenshots on your schedule and compare them against your baseline image. You set a tolerance threshold—changes below that percentage are ignored, while larger differences trigger alerts.
You control the sensitivity. Set a tolerance percentage (e.g., 1%, 5%, 10%) and we'll only alert when changes exceed that threshold. Perfect for ignoring minor rendering differences while catching real issues.
We retain your capture history for 30 days. Old captures beyond our retention period are automatically purged.
Stop guessing. Start seeing.
Join developers and QA teams who trust NerdTools to catch visual bugs.
Free forever. No credit card required.