Home/Features/JavaScript Error Monitoring
CONSOLE ERRORS, CAUGHT EARLY

Catch JavaScript errors before your support inbox does.

Every crawl loads your pages in a real headless browser and records uncaught exceptions and console errors, diffed against your last scan so you see new errors, not the ones you already know about.

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◇ WHAT WE CHECK
Uncaught exceptions captured during the crawl
Console errors per page
New-vs-resolved error diffing against your last scan
// HOW IT WORKS
01

Add your site

Paste a URL — Fortely fingerprints your framework, host, sitemap, and robots.txt in seconds.

02

Pick a schedule

Choose how often to scan, from every 4 hours to weekly, and a mobile / desktop / both device profile.

03

Get alerted on regressions

Every scan is diffed against your last baseline — you only hear about what actually changed.

Crawl-based error detection, not runtime tracking

Fortely isn't a replacement for a runtime error tracker like Sentry — it doesn't see every real visitor's session. What it does is load every selected page in a real headless browser on your schedule and record what breaks, so a bad deploy that throws console errors on your homepage or checkout page gets flagged on the next scan, not whenever a user happens to report it.

// FAQ
Is this the same as Sentry or a runtime error tracker?+
No — Fortely audits your pages on a schedule with a headless browser, it doesn't instrument real user sessions. It's a good early-warning layer alongside runtime tracking, not a replacement for it.
Does it catch errors only real users would trigger?+
It catches errors that occur while loading and rendering the page itself, which covers a large share of deploy-related regressions, but not errors that only fire on specific user interactions.
How do I know if an error is new?+
Every scan is diffed against your previous baseline, so the dashboard separates new errors from ones that were already there.
// RELATED
Performance & Core Web Vitals MonitoringBroken Link CheckerAccessibility Monitoring
◇ 90+ CHECKS · EVERY SCHEDULED CRAWL

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