siteone-crawler
SiteOne Crawler is a Rust-based website analysis and crawling tool that performs SEO, security, accessibility, and performance audits across Windows, macOS, and Linux. It generates HTML audit reports, offline clones, and Markdown exports with quality scoring and CI/CD integration.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | janreges/siteone-crawler |
| Owner | janreges |
| Primary language | Rust |
| License | MIT — OSI-approved |
| Stars | 789 |
| Forks | 71 |
| Open issues | 15 |
| Latest release | v2.5.1 (2026-06-27) |
| Last updated | 2026-06-29 |
| Source | https://github.com/janreges/siteone-crawler |
What siteone-crawler is
Cross-platform native binary written in Rust with async I/O and multi-threaded crawling; supports bulk URL crawling, sitemap processing, custom filtering, stress testing via configurable workers, and multiple output formats (HTML, JSON, text, Markdown). Includes optional browser rendering and AI assistant integration.
Get the siteone-crawler source
Clone the repository and explore it locally.
git clone https://github.com/janreges/siteone-crawler.gitcd siteone-crawler# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Single native binary with zero runtime dependencies simplifies deployment but requires platform-specific binary downloads (x64 and arm64 for Windows, macOS, Linux).
- Quality scoring across 5 categories (Performance, SEO, Security, Accessibility, Best Practices) is automated; thresholds for CI/CD gates must be set based on team standards.
- Bulk crawling requires careful rate limiting (--max-reqs-per-sec) and worker concurrency (--workers) to avoid overwhelming target infrastructure.
- robots.txt is respected by default; ensure crawl scope aligns with site policy and legal requirements (especially for multi-domain clones).
- SMTP mailer integration requires valid credentials and network access; test email delivery in staging before production use.
When to avoid it — and what to weigh
- Limited CLI Comfort — While an interactive wizard and GUI exist, the core tool is CLI-first; teams uncomfortable with command-line interfaces should evaluate the separate GUI app first.
- JavaScript-Heavy Single-Page Apps (without browser mode) — The crawler performs static HTML analysis by default; JavaScript-rendered content requires the optional browser rendering feature (not described in detail in provided data).
- Real-time Monitoring & Alerting — SiteOne is designed for one-time or scheduled crawls with report export; it is not a continuous monitoring or alerting platform.
- Proprietary Security Scanning — The tool focuses on web quality analysis (SEO, accessibility, performance); it does not replace dedicated vulnerability scanning or penetration testing tools.
License & commercial use
MIT License (permissive, open-source). Allows commercial use, modification, and distribution under the terms of the MIT License.
MIT License explicitly permits commercial use. No proprietary restrictions on deployment, customization, or resale of derived products. Recommend verifying no additional commercial terms or support agreements are required for production use.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Strong |
| License clarity | Clear |
| Deployment complexity | Low |
| DEV.co fit | Good |
| Assessment confidence | High |
Tool is designed to analyze security posture of target websites (reports security issues), not to establish its own security. Crawling respects robots.txt to avoid unauthorized scanning. SMTP credentials for email reporting should be managed securely (environment variables or secrets management). Browser rendering mode (optional) introduces additional attack surface; verify third-party dependencies if used. No publicly disclosed vulnerabilities or security audits mentioned in provided data.
Alternatives to consider
Screaming Frog SEO Spider
Commercial desktop crawler with similar SEO/accessibility audit features; larger feature set but requires paid license and higher resource usage.
Lighthouse (Google)
Free, built into Chrome DevTools; lighter-weight for single-page audits but lacks bulk crawling, offline cloning, and Markdown export capabilities.
Sitebulb
Commercial crawler with advanced SEO and technical analysis; comparable scope but proprietary and higher cost.
Build on siteone-crawler with DEV.co software developers
Download the free SiteOne Crawler binary, run the interactive wizard, or integrate it into your CI/CD pipeline to block low-quality deployments and generate actionable audit reports.
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siteone-crawler FAQ
Does SiteOne crawl JavaScript-rendered content?
Can I integrate this into my CI/CD pipeline?
What are the resource requirements?
Is this suitable for large websites?
Work with a software development agency
From first prototype to production, DEV.co delivers software development services around tools like siteone-crawler. Our software development agency staffs experienced software developers and web developers for custom software development, web development, integrations, and ongoing support across open-source testing and beyond.
Ready to audit your website at scale?
Download the free SiteOne Crawler binary, run the interactive wizard, or integrate it into your CI/CD pipeline to block low-quality deployments and generate actionable audit reports.