Googlebot and AI crawlers
Compare Googlebot with GPTBot, ClaudeBot, PerplexityBot and other AI agents on the same scale.
Native macOS SEO analysis
Your logs. Your Mac. Your insights.
Turn raw server logs into usable insight about Googlebot, AI crawlers, crawl budget and technical SEO. Your files are processed on your own machine and never uploaded.
2.4MRequests analyzed
41Available reports
100%On device
0Logs uploaded
SEO server log analysis
See what crawlers actually do.
Nirengi is a native macOS application built for technical SEO specialists, consultants, publishers, SaaS and e-commerce teams. It turns crawl behaviour, errors, coverage, content freshness and bandwidth into evidence without sending sensitive infrastructure data to the cloud.
Errors and crawl waste
Find 404s, 5xx responses, redirects, soft-404 candidates, parameter waste and robots.txt problems.
Coverage and freshness
Compare your sitemap with observed traffic to discover uncrawled, orphaned or neglected URLs.
Verified bot identity
Separate supported search bots from spoofed traffic using reverse and forward DNS checks.
Large-file engine
Process millions of lines in parallel, switching to a disk-backed path automatically when needed.
Portable, account-free reports
Filter the results and share them as CSV or as a single-file HTML report.
The complete capability map
41 reports organized for SEO decisions.
| Report group | Reports | Highlighted analyses |
|---|---|---|
| Crawler identity | 5 | Bot analysis, categories, daily crawling, mobile/desktop split and DNS verification |
| AI crawlers | 2 | AI bot activity split by training, search-index and user-triggered roles |
| Crawl budget | 7 | Most crawled URLs, crawl waste, HTML/asset and bandwidth reports |
| Technical errors | 8 | 404, 5xx, 3xx, other 4xx, soft-404, inconsistent status codes and robots.txt violations |
| Coverage and freshness | 6 | Uncrawled sitemap URLs, orphan pages, crawl frequency and freshness score |
| Visitor traffic | 8 | Time series, anomalies, referrers, organic sources, request rate and content types |
| Category analysis | 5 | Category summary, bot breakdowns, uncrawled categories and a category × bot matrix |
From files to decisions
Focused analysis in four steps.
Select your logs
Open a single file or a rotated group from the macOS file picker.
Add context
Add an optional site URL, sitemap, category list and DNS verification.
Analyze locally
Watch progress, warnings and elapsed time while the parallel engine runs.
Review and export
Use the dashboards and filters, then export the result as CSV or HTML.
Automatic format detection
One analyzer for modern server logs.
| Source | Supported format |
|---|---|
| Apache and Nginx | Combined, CLF, vhost_combined and custom trailing fields |
| IIS | W3C Extended Log File Format |
| AWS CloudFront | Standard tab-separated access logs |
| Cloudflare | Logpush HTTP request data (NDJSON) |
| Nginx, Caddy and Traefik | JSON Lines / NDJSON access logs |
| AWS ALB | Application Load Balancer access logs |
Measured at production scale
Built for logs measured in gigabytes.
On an Apple M4 Mac with 16 GB of memory, a Release build processed a 15.4 GB production log in 40 seconds. Results vary by hardware, storage, format and the features you enable.
- Input lines
- 50.9M
- Measured time
- 40 sec
- Per second
- 1.26M
- Peak memory
- 3.6 GiB
Frequently asked questions
What to know before you analyze.
Does Nirengi upload my server logs?
No. The files you select are processed locally inside the macOS App Sandbox; the app has no account, advertising or telemetry.
When does it use network access?
Only for sitemap or robots.txt retrieval, DNS bot verification and product or support links you initiate yourself.
Can I share the results?
Yes. Export tables as CSV, or the whole report as a single self-contained HTML file that needs no cloud account.
Is Nirengi free?
Version 1.0 is completely free, with no subscription or in-app purchase.