Everything You Need to Stay Online

Powerful website monitoring, beautiful status pages, and instant alerts—all in one simple platform. Know before your customers do.

Start Monitoring Free View Pricing

Free forever plan available. No credit card required.

Uptime Monitoring

Know the Moment Your Site Goes Down

Monitor your websites and APIs from multiple global locations. Get instant alerts when something goes wrong—before your customers even notice.

  • 1-minute check intervals on paid plans
  • HTTP/HTTPS monitoring with custom headers
  • Multi-region checks from US, EU, and APAC
  • Custom status codes and keyword validation
api.example.com
Operational

Uptime

99.98%

Response

186ms

Checks

4,320

US-East EU-West APAC

SSL Certificate

example.com

Status Valid
Expires Mar 15, 2026
Days Remaining 87 days
Issuer Let's Encrypt

Alert set: Notify 30 days before expiry

SSL Monitoring

Never Let an SSL Certificate Expire

Expired SSL certificates break trust and tank your SEO. Webalert monitors your certificates and alerts you well before they expire.

  • Automatic detection of SSL certificate expiry dates
  • Configurable alerts at 30, 14, 7, and 1 day before expiry
  • Certificate chain validation for complete security
  • Issuer tracking to verify certificate authority
Performance Tracking

Track Response Times Over Time

Slow websites lose customers. Monitor your response times, spot performance degradation early, and prove your reliability to stakeholders.

  • Historical charts for 30-day, 60-day, and 1-year trends
  • Average, min, and max response time stats
  • Uptime percentage calculated from check history
  • Export data for reports and stakeholder presentations

Response Time (30 days)

245ms

Avg

245ms

Min

142ms

Max

892ms

Uptime

99.98%

Acme Inc Status

All systems operational

Website
Operational
API
Operational
Database
Degraded

status.acme.com

Status Pages

Turn Outages Into Trust

When issues happen, transparency wins. Give your customers a branded status page so they see you're on it—reducing support tickets and building confidence.

  • Branded status pages with your logo and colors
  • Custom domains like status.yourdomain.com
  • Real-time updates synced with your monitors
  • Subscriber notifications for status updates
Incident Management

Manage Incidents & Maintenance Windows

Keep your customers informed during outages and planned maintenance. Post updates, track incident timelines, and notify subscribers automatically.

  • Create incidents with status updates and timelines
  • Schedule maintenance windows in advance
  • Automatic notifications to status page subscribers
  • Pause alerts during planned maintenance

Incident History

Database connectivity issue Resolved

Intermittent connection drops affecting API responses.

Dec 18, 2025 • Duration: 23 min

Scheduled Maintenance Upcoming

Database migration and performance upgrades.

Dec 22, 2025 • 02:00 - 04:00 UTC

Change Detection

checkout.example.com

Change Detected

- <button class="checkout-btn">

Removed element

+ <button class="buy-now-btn">

Added element

Content hash changed from a3f8c2 to 7b2e91

Detected Dec 19, 2025 at 14:32 UTC

Change Detection

Know When Your Content Changes

Catch unexpected changes to your pages. Detect when third-party scripts, defacements, or accidental edits alter your critical content or DOM structure.

  • Content change detection via hash comparison
  • DOM structure monitoring for critical elements
  • Instant alerts when unexpected changes occur
  • Defacement detection for security monitoring
Business Plan

Detect SEO Cloaking & Hacked Sites

SEO cloaking is when a website shows different content to search engines than to regular visitors. This is often a sign of a hacked site, malware injection, or black hat SEO tactics—and you need to know about it immediately.

  • Googlebot comparison — fetch pages as both a regular user and Googlebot
  • DOM structure hashing — compare page structure, not just text
  • Instant security alerts — catch hacked sites before Google flags you
  • Protect your SEO — avoid search engine penalties from cloaking

Security Alert

example.com

Cloaking Detected
Different Content Detected

Your page shows different content to Googlebot than to regular visitors.

Browser Hash

a3f8c2...

Googlebot Hash

7b2e91...

Recommendation: Investigate immediately for malware, spam injection, or unauthorized redirects.

Detected Jan 11, 2026 at 14:32 UTC

Starter Plan

Catch Slowdowns Before Outages

Don't wait for your site to go down. Get alerted when response times exceed your threshold, so you can fix performance issues before they impact users.

  • Configurable thresholds — set any value in milliseconds
  • Consecutive check validation to avoid false positives
  • Smart deduplication — one alert per slow period
  • All notification channels — email & Slack on all plans; SMS, Discord, webhooks on paid
⚠️

Slow Response Alert

Monitor: api.yoursite.com
Avg Response: 1,847ms
Threshold: 1,000ms
Consecutive: 3 checks
99.94% / 99.9%

Current uptime vs SLA target

Error Budget Within budget
35% used
28 min remaining Resets in 5 days
Business Plan

Track Your SLA & Error Budget

Set uptime targets like 99.9% and know exactly how much downtime you can afford. Monitor your error budget in real-time and make data-driven decisions about releases and maintenance.

  • Custom SLA targets — 99.99%, 99.9%, 99.5%, or any value
  • Error budget tracking — see remaining downtime allowance
  • 30-day rolling window — track performance over time
  • Dashboard widget — at-a-glance SLA compliance status

# README.md

Uptime badge example Production API
Uptime badge example Website

[![Uptime](https://api.web-alert.io/badge/123.svg)](https://yoursite.com)

All Plans

Show Off Your Uptime

Embed beautiful uptime badges in your README, landing page, or documentation. Build trust with users by transparently displaying your reliability.

  • Shields.io-style badges that look great everywhere
  • 24h, 7d, or 30d periods — choose what to display
  • Copy-paste snippets for Markdown and HTML
  • Free marketing — every badge links back to your site

Get Alerts Where You Work

Webalert integrates with your existing tools. Get notified via email and Slack on all plans; SMS and webhooks on paid—so you never miss an incident.

Email

All plans

SMS

All plans

Webhooks

Starter & up

Slack

Starter & up

Built for Teams Like Yours

Whether you're a solo developer, an agency managing dozens of clients, or an enterprise with critical infrastructure—Webalert scales with you.

SaaS Companies

Keep your app online and customers happy. Status pages build trust while you resolve issues fast.

eCommerce

Every second of downtime is lost revenue. 1-minute checks catch issues before they cost you sales.

Agencies

Monitor all your client sites from one dashboard. Deliver proactive support that sets you apart.

Developers

Focus on building, not firefighting. Get alerted instantly and integrate with your existing workflow.

Startups

Start free, scale as you grow. Professional monitoring without enterprise pricing.

Internal Tools

Monitor internal dashboards, APIs, and services. Keep your team productive with reliable uptime.

Ready to Keep Your Sites Online?

Join 650+ users that trust Webalert to monitor their websites, alert them instantly, and keep their customers informed.

Start Monitoring Free
Free forever plan
No credit card required
3 monitors included