Audit every page the way Google renders it.
300+ checks in a real Chromium browser on mobile, tablet and desktop. Your Google data ranks every fix.
Crawls run on your machine. Free, always.Evidence screenshots, not guesswork
$19/mo, or $14/mo billed yearly · 7 days free · No card required
Mobile 78 · Tablet 90 · Desktop 94 — parity gaps surfaced per URL
Inside a real-browser technical SEO audit
Static crawlers read source HTML and miss the rendered page. Spider audits what Googlebot indexes.
Render in a real browser
Every page runs its JavaScript in Chromium on mobile, tablet and desktop. SPAs, lazy content and client-side redirects included.
300+ checks, 23 categories
Crawlability, schema and Core Web Vitals to AEO, llms.txt, local SEO and accessibility. Each with a fix.
Scores you can defend
A weighted page score across nine categories, plus a site score for SSL, robots.txt, sitemap and llms.txt.
Ranked by traffic at risk
GSC and GA4 weight every issue. Your fix list starts with what costs clicks.
One URL, rendered on three devices
Every page is rendered and screenshotted on each device, then scored. Mobile-parity gaps can't hide behind a good desktop score.
Mobile parity gap: −16 vs desktop. Hero image pushes LCP to 4.1s and the theme hides the H1 below 640px — both invisible in a desktop-only audit.
Checks that only exist after rendering
Rendering parity, cloaking, AEO readiness — the signals you can't audit from view-source.
Screenshot evidence per finding
Each page is captured as rendered, per device. Every issue you escalate ships with proof.
Cloaking detection, scored
Each page is fetched twice, plain HTTP and full render. The gap is scored 0–100 to catch hidden content.
AI-search readiness built in
A dedicated AEO category: AI-crawler access, llms.txt completeness, FAQ schema gaps, snippet structure.
Per-device score gaps
Mobile, tablet and desktop each get a score per URL. Parity gaps stop hiding in averages.
Audit-to-audit comparison
Each crawl diffs against the last: new issues, fixed issues, score deltas. Prove a release helped, or catch its regression.
One issue catalog, zero drift
Severity, impact and fix guidance are defined once. Reports, MCP tools and AI always agree.
One page, 300+ checks, 11 report tabs
Every page opens a tabbed report, scored 0–100 per category. Metadata to Core Web Vitals, schema, local SEO and AI search.
Titles, meta descriptions, canonicals, robots directives, indexability
H1–H6 hierarchy, structure, keyword usage
Depth, readability, duplication, E-E-A-T signals, brand mentions
Internal/external, broken links, anchors, orphans, crawl depth
Alt text, dimensions, compression, modern formats, video SEO
JSON-LD validity, required props, rich-result eligibility
Open Graph, Twitter/X cards, share images & dimensions
Core Web Vitals (LCP, INP, CLS), TTFB, render-blocking
AI-crawler access, llms.txt, FAQ schema, snippet structure
LocalBusiness schema, NAP consistency, hours, geo-coordinates
hreflang tags, x-default, return links, language targeting
SSL/HTTPS, HSTS, mobile-friendliness, URL readability, a11y
Every check backed by a screenshot · scored 0–100 per category · covers Google Search & AI-answer-engine best practices
Your agent reads the audit like a teammate
Findings, screenshots, diffs and quick wins. All queryable over MCP.
What broke since the last deploy?
compare_auditsget_page_issuesCompared the last two audits: 3 new issues, 11 fixed, score +4. The new ones are all missing canonicals on /blog templates — one-line fix, want the diff?
Tools your agent gets
start_crawlget_crawl_summaryget_quick_winsget_page_reportcompare_auditsOne-call workflow recipes
- Quick Wins to Spreadsheetrun
- AI SEO Page Reviewrun
Or just type /seo-audit — one of 9 packaged slash commands the Spider ships for Claude Code.
The audit is where the OS starts
Run your first real-browser audit today
Crawl 10,000 pages on Starter, unlimited on Pro. See what HTML-only crawlers miss.
$19/mo, or $14/mo billed yearly · 7 days free · No card required
Explore the full Digispot AI SEO SpiderCommon questions
How is this different from Screaming Frog or Sitebulb?
Three ways. Rendering: every page runs its JavaScript in real Chromium on three devices, so you audit what Google indexes. Prioritization: GSC and GA4 rank every issue by traffic at risk. Action: an MCP server lets your AI agent read findings and fix them. Price helps too: $169/yr vs $279/yr, and crawling is free.
How many pages can I crawl, and what does a crawl cost?
Crawling is free, always. It runs on your machine, so nothing is metered. The Free plan crawls up to 100 pages, mobile only. Starter crawls 10,000 pages on mobile, tablet and desktop. Pro and Agency remove the page limit.
What does 'evidence-backed' actually mean?
Every page is screenshotted as rendered, per device, during the crawl. When the audit flags a layout shift, a hidden H1 or a mobile-parity gap, you and your client see the rendered page beside the finding.
Does it audit for AI search engines too?
Yes, as a first-class check category. The audit validates llms.txt (weighted into your site score), checks if robots.txt blocks AI crawlers like GPTBot or PerplexityBot, flags questions missing FAQ schema, and compares how LLM bots and Googlebot see each page.