LogLens

LogLens analyzes CDN and web-server access logs as they arrive, providing SEO, crawler, security, and performance insights. It verifies claimed bots against providers’ published IP ranges, with coverage stated as more than 200 bots. SEO monitoring relates crawler activity to sitemaps, Google Search Console data, and robots.txt changes. Security detectors cover automated hacking probes, bot impersonation surges, and exposed secrets in URLs. The service describes 16 anomaly detectors; alerts identify affected IPs, paths, and crawlers. Alert intervals depend on plan: hourly on Free, every 30 minutes on Solo, and every five minutes on Starter and above. Real-time sources include Cloudflare, AWS CloudFront, Vercel, Kinsta, Shopify, Apache, and Nginx. Users can also upload Apache, Nginx, CloudFront, or Events CSV logs without using the monthly request quota. LogLens has a free plan with 500K requests/month, one website, and 30 days of history. Paid plans start at $19/mo, and a 14-day full-access trial requires no credit card.

LogLens combines live log analysis with crawler verification, SEO context, and security detectors. Its free plan has limits on request volume, website count, history, and alert frequency; paid plans start at $19/mo.

LogLens may suit technical SEO teams, agencies, developers, DevOps leads, ecommerce managers, and security-conscious SEO teams. Its crawler, security, and performance monitoring may also fit teams managing web and CDN logs.

LogLens is a real-time access-log analysis service for teams tracking search crawlers, security signals, and site performance. It best suits technical SEO, DevOps, and ecommerce teams that need verified crawler data across live sources or imported logs. Its breadth is useful, but request and site caps make plan choice central to the fit.

Overview

LogLens checks claimed bots against providers’ published IP ranges and says it covers more than 200 bots. It connects live crawler activity to sitemaps, Google Search Console data, and robots.txt changes, giving SEO teams more context than raw request counts. Its security detectors also flag automated hacking probes, bot impersonation surges, and secrets exposed in URLs.

The service describes 16 anomaly detectors. Alerts identify affected IPs, paths, and crawlers, but cadence varies by tier: hourly on Free, every 30 minutes on Solo, and every five minutes on Starter and above. That makes lower tiers less suitable when timely response matters.

Key features

Live sources and imports

Real-time sources include Cloudflare, AWS CloudFront, Vercel, Kinsta, Shopify, Apache, and Nginx. Users can upload Apache, Nginx, CloudFront, or Events CSV logs, and those imports do not count against the monthly request quota. The mix supports both ongoing monitoring and review of existing logs, though real-time ingestion still depends on plan limits.

SEO and security context

Sitemap and Google Search Console integration helps relate crawler behavior to site structure and search data. Crawler segmentation and crawl-waste reports add useful SEO context; the detectors for probes, bot impersonation, and exposed URL secrets broaden the appeal to security-conscious teams. Data is stored in AWS eu-west-2 (London), encrypted in transit and at rest, and is not sold or aggregated across customers. A DPA is available on request.

Pricing

Free costs $0/month and includes 500K requests per month, one website, 30 days of history, real-time analytics, bot and AI crawler detection, and 10 AI answers per month. Its hourly alerts and small quota suit a low-volume site or initial evaluation, not frequent monitoring across multiple properties.

Solo is $19/month, or $190/year billed annually (save 20%). It raises the quota to 5M requests per month and history to six months, and adds sitemap and GSC integration, email and Slack alerts, CSV export, and unlimited users. It remains limited to one website, with up to three at $10/month each. The 30-minute alert cadence is a compromise for teams that need more context than Free but not the five-minute response of higher tiers.

Starter is $49/month, or $490/year billed annually (save 20%). It includes 20M requests per month, five websites (up to 10 at $10/month each), one year of history, a public API, webhook integrations, and unlimited users. Five-minute alerts make it the more practical entry point for teams that need faster notification or API workflows.

Growth is $149/month, or $1,490/year billed annually (save 20%), for 100M requests per month, 15 websites (up to 30 at $10/month each), two years of history, priority support, and unlimited users. Pro is $499/month, or $4,990/year billed annually (save 20%), and raises those allowances to 500M requests, 50 websites plus unlimited extras at $10/month each, and four years of history; it also includes dedicated support and unlimited users. These tiers fit larger operations that need sustained volume, longer retention, and stronger support, but their prices are substantial for a single small site.

Enterprise has custom pricing for 500M+ requests, with custom request volume and retention, unlimited everything, SSO/SAML, a DPA and custom MSA, an uptime SLA, a dedicated CSM, and Slack. It is aimed at organizations that need tailored scale and contractual support rather than a fixed quota.

The 14-day full-access trial requires no credit card. After it expires, data remains for seven more days before deletion unless the account is claimed. Paid-plan overage protection is opt-in, costs $2 per extra million requests, and has a user-set cap; without it, real-time ingestion pauses at quota while alerting continues. That distinction matters for teams relying on uninterrupted collection.

Platforms

LogLens supports web, API, and self-hosted use, and accepts log uploads. That range gives technical teams deployment and ingestion options beyond a web-only workflow.

Who it's for

Technical SEO teams, SEO agencies, AI-GEO specialists, developers and DevOps leads, ecommerce managers, and security-conscious SEO teams are the clearest fits. It is less compelling for a user who only needs occasional offline log inspection or cannot justify ongoing costs for quota-based live monitoring.

Pros and cons

• Pros: Bot verification against published IP ranges across more than 200 bots helps distinguish genuine crawlers from impersonators.
• Pros: SEO integrations, crawl-waste reports, and security detectors put crawler activity in broader operational context.
• Pros: CSV imports do not consume monthly request quota, and unlimited users on paid plans avoid per-seat constraints.
• Cons: Free is capped at 500K requests, one site, 30 days of history, and hourly alerts, limiting its usefulness for ongoing multi-site monitoring.
• Cons: Faster five-minute alerts begin at Starter, while Solo alerts every 30 minutes.
• Cons: Over-quota real-time ingestion pauses unless paid users opt in to capped overages.

Alternatives

For a locally run, open-source option, SEO Log Auditor is free under the MIT license and supports Linux, macOS, web, and Windows. Choose SEOMER for quick page checks and limited daily usage, with a free tier and a $5.00 one-time 5k TOK top-up. Mac users wanting a free tool with no subscription or in-app purchase can consider Nirengi Log Analyzer, which requires macOS 14.4 or later.

Screaming Frog SEO Log File Analyser offers a free tier limited to 1,000 log event lines and one project, with a paid annual plan; it is a better match when a desktop workflow is preferred. For free browser-based log analysis with no sign-up, no paid tier, and no server-side size limit, consider Crawl Lab. Log File Bot Traffic Cost Analyzer is free and offers browser triage under 500 MB, exact CLI analysis from 500 MB to 50 GB, and BigQuery for 50 GB or more.

Patrick Stox Log File Analyzer is a free, no-sign-up web option that accepts multiple files and streams large logs in chunks. Windows users considering a paid suite can look at Easy SEO Log File Analyzer Pro, whose CrawlRhino SEO Suite costs £3.99/month and covers four SEO tools with one licence key for up to three devices. For more options, see the SEO Log File Analysis Tools list.

Verdict

LogLens is a strong choice for teams that need live, verified crawler monitoring tied to SEO and security signals, especially when imports, multiple data sources, or API and self-hosted options matter. The main reason to look elsewhere is its quota-driven cost and slower alerts on the cheaper tiers; users seeking occasional free log review have simpler alternatives.