https://replicate.com

Largest Contentful Paint is too slow

Your page's main image or headline takes more than 2.5 seconds to show up. Visitors see a blank or half-loaded page, and most will leave before it finishes loading.

First Contentful Paint is slow

Your page takes more than 1.8 seconds before showing any content at all. Visitors stare at a blank screen and may leave before your site even starts to appear.

Performance score is below 70

Your site scores poorly on Google's performance test. Slow sites rank lower in search results and convert significantly fewer visitors into customers.

Page title length is not optimal

Your page title is either too short to be descriptive, or too long and gets cut off in Google search results with "...". Both reduce click-through rates.

Meta description length is not optimal

Your meta description is either too short (under 100 chars) or too long (over 165 chars). Google typically shows 100–165 characters. Too short leaves value on the table; too long gets cut off with "…".

Canonical URL differs from page URL

Your canonical tag points to a slightly different URL than the page you're on (e.g., with/without trailing slash, or a different path). Google will treat the canonical URL as the "real" version and may not index this one.

Open Graph title missing

When someone shares your link on social media or messaging apps, no title appears — just a blank card or raw URL. This drastically reduces engagement with shared links.

Open Graph description missing

When someone shares your link, no description shows under the title. Social media cards look incomplete and get fewer clicks than ones with clear descriptions.

Open Graph image missing

When someone shares your link on Twitter or Telegram, no image appears. This cuts click-through rates by up to 3×.

Open Graph URL missing

Social platforms and crawlers have no explicit canonical sharing URL for this page. This can weaken preview consistency across channels.

Images are missing dimensions

Images without dimensions can cause layout shifts while the page loads. That hurts Core Web Vitals and makes the page feel unstable.

No structured data (JSON-LD) found

No Schema.org JSON-LD blocks were found on this page. Structured data helps Google understand your content and display rich results. It also improves AI search visibility.

No analytics tracking detected

You can't improve what you don't measure. Without analytics you have no visibility into traffic, user behavior, or conversion goals.

Primary topic not found in title or H1

Your title tag and H1 are the strongest signals Google uses to understand what your page is about. If your main topic isn't there, you won't rank for it.

sitemap.xml exists but contains no URLs

Your sitemap.xml is empty. Search engines and AI crawlers use sitemaps to discover pages — an empty sitemap provides no benefit.

Content Security Policy missing

There's no policy controlling what scripts and resources your page can load. Without this, an attacker who injects any code into your page can do anything — steal cookies, redirect users, exfiltrate data.

Missing Permissions-Policy header

Without a Permissions-Policy header, any script on your page can access the camera, microphone, geolocation, and other sensitive browser features. This is a defence-in-depth security header that limits exposure if you get XSS.

No CAA DNS record

Without a CAA record, any certificate authority in the world can issue an SSL certificate for your domain. A CAA record restricts which CAs are allowed.

Cookie set without HttpOnly flag

Without HttpOnly, JavaScript on the page (including injected scripts from XSS attacks) can read your cookies, including session tokens.

No web app manifest found

Your site has no web app manifest. Without it, users who add your site to their home screen on Android get a generic browser icon and no app-like experience. It also helps Chrome show the "Add to Home Screen" prompt.

Phone numbers not linked for tap-to-call

Phone numbers on your page are plain text — mobile users cannot tap to call. Wrapping them in <a href="tel:+1234567890"> lets users call directly from the page, which significantly increases conversion on mobile.

No structured data (Schema.org)

AI assistants and search engines use structured data to understand what your product is. Without it, they have less reliable context.

Heading hierarchy is broken

The page outline skips heading levels. That makes machine parsing and assistive reading less reliable.

llms.txt has no product description

Your llms.txt exists but doesn't explain what your product is. AI systems use the description to understand your site context.

No content date signal found

Perplexity and Google AI Overview weight fresh content significantly higher. Without a date signal, your page may be treated as potentially outdated — reducing how often AI systems cite it in answers.

First paragraph too short for AI citation

AI systems like ChatGPT, Claude, and Perplexity extract the beginning of your page as citation passages. A short or absent opening paragraph means they have little useful content to cite, reducing how often your page appears in AI answers.

Form inputs missing labels

Some form fields have no label. Screen reader users cannot tell what the field is for. Placeholder text is not a substitute — it disappears when you start typing.

Buttons without accessible label

Some buttons (icon buttons, hamburger menus, close buttons) have no accessible name. Screen readers will say "button" with no context — users cannot tell what clicking the button does.

No skip navigation link

Keyboard and screen reader users have to tab through every navigation item on every page to reach the main content. A "skip to content" link at the top of the page lets them jump directly to the main area.

Low Lighthouse accessibility score

Your site scores poorly on automated accessibility tests. This means real users — people using screen readers, keyboard navigation, or who need high contrast — likely struggle to use your site.