Site Audit
SEO audit tool for finding technical issues fast
Crawl a site, collect page-level technical signals, and optionally run Lighthouse checks for performance, SEO, accessibility, and best-practice issues.
Free SERP simulator
Preview how a title and meta description render on Google, with pixel widths. No signup required.
What you can do
- 01
Run a site crawl
Inspect pages for status codes, titles, meta descriptions, headings, indexability signals, image alt coverage, links, response time, and optional Lighthouse findings.
- 02
Prioritize issues
Review crawled pages and optional Lighthouse results so the team can focus on visible page and performance problems.
- 03
Drill into affected URLs
Move into URLs with missing titles, metadata, heading and image-alt signals, status-code issues, response-time data, or optional Lighthouse findings.
Data you can act on
- Crawled URLs
- Coverage
- Page fields
- Checks
- Affected pages
- Scope
- Audit history
- Progress
Use cases
- Audit a new site before publishing SEO work.
- Find technical issues after a migration or redesign.
- Export crawled page data and Lighthouse findings for developers and content teams.
Why OpenSEO
- A practical crawler built into the same workspace as keyword and domain research.
- Open-source implementation for teams that want to inspect or extend the audit flow.
- Simple reports that expose page-level signals and optional Lighthouse findings instead of relying only on a generic score.
The Site Audit Strategy Library
Practitioner strategies for turning a crawl into scheduled work. Each guide includes a full walkthrough and a copy-paste MCP prompt.
The technical SEO audit checklist that ends in fixes
Triage 1,180 findings down to the 35 that stop a page being seen.
Write an audit report the client will actually act on
Six sections that tie each finding to a page, a cost, and an owner.
Index bloat: when the fix is deleting pages
Check what Google actually indexed before you remove anything.
Related features
FAQ
What does the OpenSEO site audit tool check?
Status codes, titles, meta descriptions, headings, indexability signals, image alt coverage, links, and response time for every crawled page. Enable Lighthouse and each page also gets performance, SEO, accessibility, and best-practice issues.
Is OpenSEO a free SEO audit tool?
For smaller sites, yes: the free plan includes site audits up to 50 pages per crawl. Larger crawls need a paid plan, starting at $10/month. OpenSEO is also open source and self-hostable.
Who should use OpenSEO Site Audit?
It is useful for founders, marketers, agencies, and developers who need a shared crawl report and optional Lighthouse issue export.
Try OpenSEO
The open source alternative to bloated, expensive, legacy SEO tools.