Features

Everything we check.In plain English.

One scan runs 25 engines across your whole site in a real browser, covering AI search, SEO, speed, security, accessibility and code quality. Then AI writes the fixes, SEO rewrites and GEO plan for your site. Pick a question below to see how it all works.

Example reportexample.com · 48 pages

76/ 100

Overall site health

One score, broken down by discipline. Tap a row to see what’s behind it.

audit engines: 25
checks on every page: 74
disciplines in one report: 7
from URL to results: ~2 min

Explore by question

What do you want to know about your site?

Each question is answered by a group of engines. See what they check, what they report and how you fix it.

01 / 074 engines · 12 checks

AI search readiness

Can ChatGPT, Claude and Perplexity find, read and quote your site?

Full guide

Open any engine to see exactly how it works.

How it works
- Active HTTP Bot Probes. Emulates GPTBot, ClaudeBot & PerplexityBot headers to detect silent drops.
- Edge WAF Trapper. Catches Cloudflare Bot Management 403 blocks that static robots.txt scrapers miss.
- RFC-9309 Matrix. Validates longest-match allow and disallow rule precedence across AI agents.
How it works
- Word Count Parity. Compares pre-rendered server HTML directly against the fully hydrated client DOM.
- Empty Shell Trapper. Flags client-only React, Vue, Next.js, and Angular JS-only shells with 0 tokens.
- No-JS Crawlability. Verifies critical semantic body content is parseable without client JS execution.
How it works
- 5-Tier Discovery Scan. Discovers manifests across /llms.txt, /.well-known/llms.txt, and /llms-full.txt.
- Link Health Verification. Executes concurrent HTTP 200 checks across all manifest-linked documentation URLs.
- Token Budget Estimator. Estimates model context window consumption and generates copy-paste starter manifests.
How it works
- Knowledge Graph Resolution. Audits Schema.org sameAs links to Wikidata, Wikipedia, LinkedIn & Crunchbase.
- Direct-Answer Density. Measures direct-answer extractability and expands collapsed FAQ accordions for RAG.
- E-E-A-T Signal Audit. Assesses author attribution, editorial freshness, and authoritative external citations.

AI fixes · SEO · GEO

Then AI writes the fix, for your site.

Once the engines finish, AI reads your measured results and writes three things for your developers and your content team. No templates: it uses your real URLs, headings, selectors and stack.

Plus a plain-English summary at the top of your report, with a priority plan ranked by impact and effort, and quick wins.

AI fixCriticalPerformance

Hero image delays Largest Contentful Paint

Your homepage hero is a 1.2 MB PNG the browser finds late, so mobile LCP lands at 3.4s — over Google’s 2.5s threshold.

before

<img src="/images/hero-home.png" class="hero__img">

after · html

<!-- <head>: start the hero download early -->
<link rel="preload" as="image"
      href="/images/hero-home.webp" fetchpriority="high">

<!-- Hero: modern format, fixed size, no lazy-load -->
<img src="/images/hero-home.webp" class="hero__img"
     alt="Freshly roasted coffee beans"
     width="1280" height="720" fetchpriority="high">

target section.hero > img.hero__imgHigh confidence

Example output for a sample site. Yours is written from your own scan results.

Grounded in your scan

It only works from what the engines measured. No invented issues, URLs or scores.

Fits your stack

It spots your host and framework, like Vercel, Netlify, Cloudflare or Next.js, and writes config for that platform.

No duplicates or filler

It skips schema your pages already have and strips placeholder text before it reaches you.

Safe with any page

Text from your pages is treated as data, never as instructions to the AI.

The free preview includes the AI summary and a sample of the SEO and GEO rewrites. The full report has every code fix, rewrite, llms.txt and JSON-LD block. AI suggestions are a strong starting point: review code against your stack before you ship it.

After the scan

What you can do with your results.

A scan doesn’t end with a score. Here’s what you can do with the report once it’s ready.

1CriticalAdd a Content-Security-Policy
2HighServe the hero image as AVIF
3Quick winAdd alt text to 6 images

01 · Fix

Know exactly what to do first.

Every finding ranked critical, high or quick win
AI code fixes with your real selectors, in your stack
SEO rewrites, a tailored llms.txt and JSON-LD to paste in

02 · Understand

See how your whole site fits together.

Interactive internal link graph with orphan pages
Crawl explorer: filter every page, export to CSV
AI retrieval simulator shows how AI reads each page

Try a brand

03 · Share

Hand a polished report to anyone.

PDF report with score, grade and every fix
White-label with your logo and colours (Agency plans)
Emailed when the scan finishes, plus CSV & JSON exports

04 · Track

Prove the fixes actually worked.

Every scan saved in your audit records
Re-audit any domain in one click
Scheduled weekly or monthly re-scans (monthly plans)

Honest about blocked sites. If a firewall or bot challenge answers instead of your site, the scan stops and tells you how to allow it. We never score a challenge page.

The full list

Every engine, at a glance.

Looking for something specific? Search or filter, then open any engine for the full detail. All of them run on every scan.

Showing 25 of 25 engines

How we compare

One scan instead of four tools.

Speed, SEO, accessibility and AI search usually mean stitching reports together. BugViso puts them in one.

Capability	BugViso	Lighthouse	Ahrefs	Screaming Frog
Core Web Vitals & Speed	Yes	Yes	No	No
Technical SEO (Tags, Meta)	Yes	Yes	Yes	Yes
Accessibility (WCAG)	Yes	Yes	No	No
AI Search Readiness (GEO 2.0 & llms.txt)Only BugViso	Yes	No	No	No
Edge WAF Bot Probing (Cloudflare 403)Only BugViso	Yes	No	No	No
SSR vs CSR Content Parity for AIOnly BugViso	Yes	No	No	No
Client-side Hydration Checks	Yes	No	No	No
Backlink Analysis	Yes	No	Yes	No
Branded PDF Reports	Yes	No	No	No

See what all 25 engines find on your site.

Paste a domain. In about two minutes you’ll have a score, a ranked fix list and the code to ship it.

BugViso — Free Website Audit for SEO, Speed, Accessibility & Security BugViso runs a deep, automated audit of any website — Core Web Vitals and page speed, SEO and structured data, accessibility (WCAG 2.1 AA), security and TLS, mobile experience, visual QA, duplicate content, internal links, backlinks and AI search readiness (GEO) — and delivers a prioritised, branded PDF report. Run an instant website audit · See everything BugViso scans · Blog & Guides · About BugViso JavaScript is required for the interactive audit experience.