ErrorLens is an AI-powered website analysis and optimization platform.

How does ErrorLens work?

ErrorLens scans websites and error logs to identify issues and provide AI-powered recommendations.

AI-powered · real-time · production-ready

Stop guessing.
Fix errors fast.
Build with confidence.

ErrorLens analyzes your error logs with AI — identifying root causes, counting occurrences, and generating exact code fixes in seconds.

Analyze your first log free →See how it works

Trusted by 4,200+ engineers at fast-moving teams

errorlens — production.log⚡ ANALYZING

input — raw error log

1[2024-12-01 10:22:41] ERROR PaymentService

2java.lang.NullPointerException

3 at PaymentService.process(PaymentService.java:42)

4 at OrderController.checkout(OrderController.java:88)

6[2024-12-01 10:22:43] WARN ConnectionPool

7Pool exhausted — waiting for connection

8 timeout=30000ms pool.size=10

10ERROR PaymentService (×147 more occurrences)

11INFO Retry attempt 1/3...

⚡ errorlens analysis

CRITICAL×148 occurrences

NullPointerException

customer.getPaymentMethod() returns null during guest checkout — missing null guard at line 42

HIGH×34 occurrences

ConnectionPool Exhaustion

Pool size (10) too small for concurrent load — connections not released after errors

MEDIUM×12 occurrences

Retry Storm

Cascading retries amplifying failures — no exponential backoff configured

From error to fix
in three steps

No setup. No configuration. Just drop in your logs and get actionable intelligence immediately.

ErrorLens Demo Walkthrough⚡ DEMO VIDEO

Upload or Paste

Drag & drop any log file — .log .txt .json .csv .xml — or paste your stack trace. Supports up to 500K characters per analysis.

AI Analyzes

Our AI parses every line, counts exact occurrences, identifies distinct error types, and traces root causes — in seconds, not hours.

Get Code Fixes

Receive side-by-side before/after code patches for every error, inferred from your stack traces, with numbered steps and prevention tips.

Point it at a URL.
Get a full audit instantly.

No browser extension. No code changes. Paste any public URL and ErrorLens fetches the page, inspects its HTML and security headers, and returns a categorized audit with actionable fixes — in seconds.

Security Headers

Audits CSP, HSTS, X-Frame-Options, and 6 other headers. Flags inline event handlers and mixed-content loads that expose your users.

Accessibility

WCAG 2.1 violations: missing alt text, unlabelled inputs, empty buttons, absent lang attribute, and broken ARIA roles.

Performance

Render-blocking scripts, images without dimensions, large inline styles, and missing async/defer slowing your page load.

SEO

Missing title tags, absent meta descriptions, broken canonicals, missing Open Graph tags, and non-descriptive link text.

HTML Quality

Deprecated elements, invalid nesting, duplicate IDs, and semantic misuse that breaks rendering or assistive technology.

Broken Links

Placeholder hrefs, javascript:void(0) without role, and #anchor references pointing nowhere.

Mobile Friendliness

Missing viewport meta tag, unresponsive elements, font sizes too small, and touch targets that are difficult to tap on mobile devices.

Privacy & Compliance

Missing cookie consent, absent privacy policy links, insecure form submissions, and GDPR/CCPA compliance gaps.

Everything your team needs
to build without fear

Severity Ranking

Errors ranked Critical → High → Medium → Low, sorted by occurrence count. The most impactful issue always surfaces first.

AUTO-SORTED

Occurrence Counting

Exact count of how many times each distinct error appears. Know whether you're facing a rare edge case or a systemic failure.

ACCURATE COUNTS

Root Cause Analysis

Goes beyond the symptom. Identifies the underlying code path, missing null check, misconfiguration, or resource leak.

DEEP ANALYSIS

Code Patch Suggestions

Side-by-side before/after diffs inferred from your stack traces — even without seeing your source code. Works across 40+ languages.

40+ LANGUAGES

Team Collaboration

Share analysis history across your organization. Every team member sees the same ranked errors, root causes, and fixes.

MULTI-USER

Analysis History

Every analysis is saved and searchable. Track trends, filter by severity, and see which engineer caught what — full audit trail.

FULL HISTORY

Loved by teams who move fast

“We had a production incident at 2am. ErrorLens identified the root cause — a missing null check in the payment flow — in 6 seconds. We shipped the fix in 12 minutes.”

Alex Mercer

Staff Engineer · FinTech

“The before/after code diffs are genuinely impressive. It inferred our exact service architecture from the stack trace and gave us patches that worked first try.”

Sanjay Kumar

CTO · SaaS Platform

“Our junior developers used to spend hours on stack traces. Now they paste the log, get the analysis, and ship the fix. It levelled up the entire team's debugging ability.”

Julia Lopez

Engineering Lead · Scale-up

Simple, honest pricing
no surprises

Start free. Upgrade when your team grows. No per-seat traps.

Free

^$0

forever · no credit card

Get started free

25 analyses / month

1 team member

7-day history

Core analysis + root cause

Code patch suggestions

API access

Starter

^$14

per month · cancel anytime

Get started with Starter →

75 analyses / month

1 team member

30-day history

Code patch suggestions

API access

Team collaboration

Slack alerts

Pro

^$29

per month · cancel anytime

Get started with Pro →

150 analyses / month

5 team members

90-day history

Code patch suggestions

Team collaboration

API + Slack alerts

Webhooks

SSO and SAML

Team

^$69

per month · cancel anytime

Get started with Team →

500 analyses / month

15 team members

1-year history

Code patch suggestions

Webhooks + API

Advanced analytics

Priority support

SSO and SAML

Enterprise

Custom

tailored to your org

Talk to sales →

Unlimited analyses

Unlimited members

Unlimited history

SSO and SAML

Data residency

SCIM provisioning

Audit logs

99.9% SLA

All paid plans include $0.06/analysis overage · no surprise bills · cancel anytime

How ErrorLens compares

ErrorLens vs. top error monitoring platforms — last updated May 2026

Feature	ErrorLens	Sentry	Datadog	Rollbar
AI root cause analysis	Automatic, per error	Basic (Sentry AI beta)	Manual only	Manual only
Code fix suggestions	Before/after diff	Suggestions only	Not included	Not included
Any log format	Text, JSON, XML, images	SDK-only ingestion	Agent required	SDK-only ingestion
Free tier analyses/month	25 analyses	5K errors tracked	14-day trial only	5K occurrences/month
Paid entry price	$14/month	$26/month	$15+/host/month	$19/month
Privacy — no SDK required	Paste or upload log	Requires SDK install	Requires agent	Requires SDK install

Full support Partial/limited Available with caveats Not available· Competitor data based on publicly available pricing.

Stop guessing.Fix errors fast.Build with confidence.

From error to fixin three steps

Point it at a URL.Get a full audit instantly.

Everything your team needsto build without fear

Loved by teams who move fast

Simple, honest pricingno surprises

How ErrorLens compares

Your next incidentresolved in seconds

Stop guessing.
Fix errors fast.
Build with confidence.

From error to fix
in three steps

Point it at a URL.
Get a full audit instantly.

Everything your team needs
to build without fear

Simple, honest pricing
no surprises

Your next incident
resolved in seconds