1 of 10
+47% organic traffic in 90 days
“The full-site audit caught 200+ issues that Semrush missed. We fixed the top 20 and our organic traffic climbed 47% in three months. Ridiculous ROI for a free tool.”
Marcus T.
Head of SEO · B2B SaaS
Free Forever · 100+ SEO Audits · No credit card
Free SEO Audit Tool
Complete Website Audit
Complete website SEO audit in 30 seconds. 100+ audits. Built to rank on Google AND get cited in AI search.
First audit can take ~20s to spin up — every one after starts instantly.
Free ForeverNo credit cardBuilt for Google + AI search
Rank everywhere
Top of Google. Cited by every AI.
Modern SEO needs both — and we audit for both.
google.com/search?q=how+to+rank+on+top+of+google
how to rank on top of google
A AllImagesVideosNewsShoppingMaps MoreTools
About 412,000,000 results (0.39 seconds)
AI OverviewSearch Labs
To rank on top of Google, pair technical SEO with AI-search visibility — InstaRank SEO scores all three on any URL.
instarankseo.com
semrush.com
ahrefs.commoz.comInstaRank SEO
https://instarankseo.com
4.9(1,204)·Free·100+ checks
The following results are illustrative competitor entries and are not interactive.
Semrush
https://www.semrush.com › blog › how-to-rank
Ahrefs
https://ahrefs.com › blog › how-to-rank
Moz
https://moz.com › beginners-guide-to-seo
People also ask
Rank #1 on Google
That brand cited at the top is AI search visibility — InstaRank scores every page for citations in ChatGPT, AI Overviews, Perplexity, Gemini & Claude.
Comprehensive Audit
Every SEO signal. One audit.
100+ SEO audits across 23 categories — technical, on-page, backlinks, content quality, E-E-A-T & AI search — severity-ranked, not raw data.
instarankseo.com/audit
Live96/ 100
apiserpent.comExcellent
Crawled
247
Issues
0
Fix-time
Done
Technical SEO88
On-page SEO76
Page speed58
AI visibility81
Top fixes
0 issues · sorted by impact
- fixedFixed
Largest Contentful Paint exceeds 4s on 7 pages
Defer the hero image + preload the LCP font subset.
- fixedFixed
12 pages missing meta descriptions
Auto-generate from page content, then review before publish.
- fixedFixed
3 images over 500 KB served without compression
Serve WebP at the rendered size to cut ~1.2 MB.
Fix issues. Rank higher.
Keywords & Backlinks
Start keyword research.Find backlink opportunities.Rank organically.
There's nothing more powerful than ranking organically.
instarankseo.com/keyword-research
LiveResearch→
Write→
Links→
Outreach→
Rank
Keyword opportunities
412 found · top 712.2k total volumeavg KD 392 quick wins (KD<30)
- free SEO audit tool2.4k$3.10Transactional open38
- semrush alternative1.1k$6.40Commercial51
- website seo checker4.9k$2.80Transactional47
- how to rank on chatgpt620$1.20Informational27
- ai overview optimization410$1.90Informational22
- seo audit free online1.9k$2.40Transactional41
- core web vitals test2.1k$1.50Informational33
Winning pick: “free SEO audit tool” · 2.4k vol · KD 38Track rank →
Win the right keywords
Organic growth engine
Keyword workflow
Turn one seed keyword into topic clusters.
Enter a seed, generate three qualified keywords with search volume, intent, and SERP difficulty, then expand each into content topics.
free seo audit toolResearch keywords
Keywords to topics
topics ready1
free seo audit tool
2.4kToolBest free SEO audit tools
Free audit checklist
Audit tool comparison
2
ai seo checker
1.8kAIAI SEO checker guide
ChatGPT visibility audit
AI search readiness
3
technical seo audit
1.2kAuditTechnical SEO checklist
Fix crawl issues
Indexing audit guide
Backlink workflow
Turn referring domains into outreach.
Scan your backlink profile, surface referring-domain prospects, reveal the contact, and draft outreach.
Ref domains to outreach
outreach ready1DR 91
searchenginejournal.com
free SEO audit tools
Contact found
Maya Chen · editor@searchenginejournal.com
2DR 90
backlinko.com
seo tools list
3DR 91
producthunt.com
new SEO software
For developers & agencies
API access + white-label reports.
Run every audit programmatically, then ship the report under your own brand — both included with InstaRank Pro.
21 documented endpoints
Every standalone SEO audit is a single REST call — robots.txt, meta tags, canonical, sitemap, page speed, E-E-A-T, LLM optimization, a domain-value endpoint and 12 more.
60 requests / minute
Pro-tier rate limit with monthly credit pools. Rate-limit headers on every response (X-RateLimit-Remaining, Retry-After) so you can pace cleanly.
Auth via API key (1-min setup)
X-API-Key header — generate from your dashboard, drop into any HTTP client. No OAuth, no JWT, no setup ceremony.
curl · /api/v1/checks/meta-tags
200 OK · 1.2sRequest
$ curl -X POST https://instarankseo.com/api/v1/checks/meta-tags \ -H "X-API-Key: ir_live_••••••••••••" \ -H "Content-Type: application/json" \ -d '{"url": "example.com"}'
Response
{ "score": 82, "checkName": "meta-tags", "issues": [ { "severity": "warning", "message": "Title tag too long (74 chars)" }, { "severity": "info", "message": "Missing og:image" } ], "data": { /* full meta-tag breakdown */ } }
Simple, transparent pricing.
Start free. Upgrade when your audits go beyond 1,000 pages.
Save 20%
Free
Try every audit on any URL
$0/forever
No credit card required
- 100+ individual SEO audits
- Full website audit, up to 1,000 pages
- Sign in to save audits & history
- All 5 SEO categories + AI search
How we stack up
Why teams switch from Semrush + Ahrefs to InstaRank.
Same depth. Better price. Plus AI-search visibility no one else covers.
InstaRankPricing
Free forever + $79/mo Pro
Paid only — from $99 · $129 · $99/mo
Keyword + rank tracking
Daily rank tracking across Google AND 5 AI engines
Google only — AI tracking partial or none
Competitor research
Included — gap analysis + share-of-voice
Core plans only · limited on Moz
Outrank on Google + AI
All top LLMs + one-click in-app fixes
Semrush partial · Ahrefs & Moz: none
Backlink building
Full profile + toxic detection + outreach
Profile only · outreach is a paid add-on
See the full feature-by-feature comparison, or the deep dives: Semrush · Ahrefs · Moz
Guides & insights.
Hands-on playbooks for ranking on Google AND getting cited in ChatGPT, AI Overviews, Perplexity, Gemini, and Claude — plus the latest from our blog.
About
Built by SEO practitioners.
“To make professional SEO accessible to every business, empowering them to compete and succeed in the digital landscape.”
The team
7 people. One mission.
Anurag
Backend LeadBuilds the audit engine and 100k-page cloud crawler.
Anupam
SEO LeadRuns the SEO playbook and ranking experiments.
Shreyan
Design LeadDesigns the visual system — report, homepage, components.
Vikash
Frontend LeadShips the React app — dashboard, canvas, SSE wiring.
Naincy
UX LeadShapes the report UX for non-experts to act on.
Avik
Backend & QA LeadHardens the audit pipeline — 10k-user concurrency and QA.
Vishal
Media HeadLeads brand and media — launch, social, partnerships.
Trusted by SEO + growth teams at
What people say
Loved by SEO teams.
Early users have shipped audits on ~50,000 sites. Here are 10 of their stories.
Reviews coming to
4.5
Coming soon
4.7
Coming soon
9.2/10
Coming soon
Ready to dominate search?
Run a free SEO audit on any URL. 100+ audits.
Free Forever · No credit card · Built for Google + AI search
Last updated:
FAQ
Frequently asked questions.
Everything you need to know about running an SEO audit + AI search optimisation.
What is a website SEO audit?
A website SEO audit is a complete analysis of your site's search engine optimization health. It checks technical factors (robots.txt, sitemaps, canonical URLs, HTTP status codes, page speed, mixed content), on-page factors (meta tags, content quality, keywords, E-E-A-T, internal links), off-page factors (backlinks, social signals), and AI search readiness. InstaRank SEO runs 100+ individual audits spanning technical SEO, on-page, backlinks, content quality, and AI search readiness.
What does InstaRank SEO check in its SEO audit?
InstaRank SEO performs 100+ SEO audits spanning technical SEO (robots.txt, XML sitemaps, canonical URLs, HTTP status codes, URL structure, mixed content, X-Robots-Tag, internal links, page speed), on-page SEO (meta tags, content quality, keywords, E-E-A-T), off-page SEO (backlinks quality, outbound links, social signals), and AI search optimization.
Is InstaRank SEO a free Semrush or Ahrefs alternative?
Yes — InstaRank SEO is the free Semrush and Ahrefs alternative. It runs a complete website SEO audit with the same audit depth as paid tools (Semrush at $99/mo, Ahrefs at $129/mo) but at $0/mo. Includes AI search optimization audits (ChatGPT, AI Overviews, Perplexity, Gemini, Claude) which most paid tools still don't offer.
Is it free to use?
Yes, InstaRank SEO is 100% free. You can run 100+ audits on any URL. A paid InstaRank Pro plan ($79/mo) adds saved projects, scheduled audits, white-label reporting, API access, and priority support.
How long does a website audit take?
InstaRank SEO uses a fast, parallel crawler that runs every audit category simultaneously, so you get a complete SEO audit in seconds rather than waiting on a slow sequential crawl.
How does it help me rank on Google AND in AI search engines?
InstaRank SEO runs both classical SEO ranking audits (technical SEO, on-page, backlinks, content quality) and AI search optimization audits (LLM citation readiness, AI Overview optimization, schema markup, E-E-A-T signals, FAQ markup, heading clarity). Together these help your site rank on Google's 10 blue links AND get cited as a source in ChatGPT, Google AI Overviews, Perplexity, Gemini, Claude.
What is LLM optimization, GEO, and AEO?
LLM optimization — also called GEO (Generative Engine Optimization) and AEO (Answer Engine Optimization) — is the practice of optimizing content to be cited in AI-generated answers from ChatGPT, Google AI Overviews, Perplexity, Gemini, and Claude. InstaRank SEO's LLM optimization checker analyzes content structure, E-E-A-T signals, FAQ markup, heading clarity, factual density, and answer-readiness to help you rank in AI search results.
What is spam score and why does it matter?
Spam score measures how spammy or trustworthy a site appears to search engines based on link profiles, content duplication, keyword stuffing, thin content, and suspicious patterns. A high spam score hurts your rankings. InstaRank SEO's spam score checker analyses multiple signals and gives actionable recommendations to reduce your score.