Tools

Free SEO tools.

Use NavSEO diagnostics to frame the problem, focused ViWeb utilities to collect technical evidence, and trusted external platforms for search data, performance, research, and validation.

5NavSEO diagnostics
6curated ViWeb utilities
8trusted external platforms
0required NavSEO login

NavSEO diagnostics

First-party checklists and workbenches that turn reported signals into a clearer priority and next action.

External utilities

ViWeb-hosted SEO utilities.

For focused technical checks already maintained by ViWeb, open the working utility directly. These links leave NavSEO and were verified on July 12, 2026.

Inputs entered there are handled outside NavSEO. Avoid submitting confidential URLs or data.

External · ViWeb · Crawl access

Robots.txt Tester

Fetch or paste robots.txt, inspect directive groups and sitemap declarations, and test a URL for a specific crawler user agent.

External · ViWeb · Sitemap inventory

Sitemap URL Extractor

Extract URLs across sitemap files and nested sitemap indexes for migration checks, crawl planning, content inventories, and indexation audits.

External · ViWeb · Redirect evidence

Redirect Checker

Trace a URL through every HTTP status and destination to find chains, incorrect redirects, and broken migration paths.

External · ViWeb · Security header evidence

HeaderSec HTTP Header Scanner

Scan HSTS, CSP, clickjacking, MIME sniffing, cookie attributes, cross-origin isolation, and avoidable information leakage.

External platforms

Trusted external SEO platforms.

A compact set of official and established platforms for measurement, performance, research, page inspection, and structured data. Access labels and destination links were verified on July 12, 2026.

These providers handle any account, URL, or data submitted on their sites. Review their terms before sharing sensitive information.

Free with login · Google · Search performance and indexing

Google Search Console

Review search performance, indexing, sitemap processing, Core Web Vitals, and crawl-related reports for verified properties.

Last verified .

Free · Google · Core Web Vitals evidence

PageSpeed Insights

Compare available field data with lab performance, Core Web Vitals, and diagnostic opportunities for a public page.

Last verified .

Free with login · Microsoft · Behavior analytics

Microsoft Clarity

Use heatmaps and session recordings to investigate how visitors interact with important landing and conversion pages.

Last verified .

Freemium · Ahrefs · Keyword and backlink research

Ahrefs Free SEO Tools

Use one maintained entry point for Ahrefs keyword, backlink, authority, toolbar, and site-owner tools.

Last verified .

Freemium · Wappalyzer · Technology identification

Wappalyzer

Identify website technologies and use browser or workflow integrations to support platform, rendering, and migration research.

Last verified .

Free · Google · Rich result eligibility

Google Rich Results Test

Test a public URL or code sample for Google-supported rich result eligibility and inspect detected structured data.

Last verified .

Free · Schema.org · Schema markup validation

Schema.org Validator

Validate Schema.org markup from a fetched page or pasted code and inspect recognized entities and properties.

Last verified .

How to use this toolkit

Start with a NavSEO diagnostic when the constraint is unclear. Use a focused ViWeb utility when a known technical signal needs evidence. Use a trusted platform when the task depends on search-engine data, behavioral data, an established research index, or provider-specific validation. Treat checklist scores as editorial heuristics and compare reported answers with observable results.

Deeper review

Turn tool results into an audit plan.

If a checklist surfaces issues but the priority order is unclear, request a focused SEO audit.