v0 is a UI generator. SEO meta, OG cards, security headers, accessibility wiring and content-quality checks aren't in scope for v0 — they are for us.
v0 is brilliant at turning a prompt into a beautifully styled section. It doesn't write your <head>, doesn't generate OG images, doesn't audit headers, and won't flag that the contrast on your hero text fails WCAG AA. We do all of that.
Each pattern is written from public-page audit evidence and ships with a one-line fix suggestion in the report.
v0 components rarely include a Metadata export. Every route inherits ‘Create Next App’ or whatever you forgot to overwrite in the root layout.
Without an explicit og:image route or static asset, your Slack/X/LinkedIn previews look generic and untrustworthy.
v0 emits Lucide icons without aria-hidden, so a screen reader reads ‘Sparkles button Sparkles arrow-right’ before the actual label.
v0 leans on text-muted-foreground for body copy. On the default Tailwind palette this drops below WCAG AA on light backgrounds.
Vercel's defaults are decent but you still need a CSP if you embed third-party scripts. We grade your headers and tell you the exact rule to add.
v0 defaults to client components even when the section is static. Hurts FCP, hurts crawlability, and breaks streaming SSR.
v0 previews at desktop. On a real iPhone SE viewport, primary CTAs frequently end up below the fold.
‘Acme Inc.’, ‘Lorem ipsum’ and ‘john@example.com’ ship to production more often than you'd think.
Check these before you share your link. The full PageLens AI audit catches everything else.
This covers the basics. A full PageLens AI scan checks hundreds of rules across 10 categories — including the ones that are hard to spot manually.
After your scan, download the Markdown report and use this prompt with your AI builder to fix everything automatically.
I generated this UI with v0 and deployed to Vercel. PageLens AI found these issues. Fix each one in my Next.js App Router codebase: [paste findings here]
Paste the live URL of your v0-built site. Pick how many pages to scan.
Real headless Chrome visits every page, captures screenshots, reads the rendered HTML and headers, then a vision-capable AI writes the findings.
Severity-ranked findings, screenshots, fix suggestions, security headers grade, PDF export, share link.
Start free, get Primary Scan from $1, or subscribe from $9/mo for continuous monitoring.
Primary Scan
$1
Up to 1 pages
Fix & Verify Pack
$9
Up to 1 pages
Launch Pack
$29
Up to 15 pages
Data-Safe Launch Pack
$79
Up to 25 pages
Not ready to scan your v0 build yet?
Get the practical pre-launch checklist by email, with the same builder and launch context preserved for your Primary Scan or Launch Pack link.
More relevant, not less. We scan your live site — whatever you've shipped. Heavy customisation usually introduces new issues v0 wouldn't have generated.
Yes — we use a real Chromium browser, so the page is fully rendered (RSC, streaming, suspense) before we capture HTML and screenshots.
Free instant check - no signup. Primary Scan from $1, Launch Pack from $29: fix with your AI builder, re-scan, and prove it improved.