https://bubble.io

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.

H1 heading is missing or duplicated

Every page should have exactly one main heading (H1) that tells Google what the page is about. Missing or multiple H1s confuse search engines and lower your rankings.

OG image missing width and height

Twitter/X, LinkedIn, Telegram, and Discord need the image dimensions declared in your HTML to display the preview correctly. Without them, the preview may be skipped entirely or shown at the wrong size — reducing click-through rate when your link is shared.

Images are missing alt text

Some images have no alt text. Screen readers and search engines lose context, and image search previews are weaker.

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.

Very few internal links on the page

This page has almost no links to other pages on your site. Internal links help Google discover and understand your site structure, and help visitors navigate. Most substantive pages should link to at least 3–5 related pages.

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.

X-Frame-Options header missing

Your site can be embedded in an invisible iframe on another website. Attackers use this technique (called "clickjacking") to trick your users into clicking things without realising it.

API key found in page HTML

A secret API key is visible in your page's HTML source code. Anyone can view-source your page and steal it — this is actively exploited by bots that scrape the web looking for this.

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.

Cookie set without HttpOnly flag

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

Third-party tracking scripts detected

Your site loads scripts from third-party tracking services. Each tracker adds latency, can access cookies/localStorage, and represents a privacy surface. More trackers = slower page + more GDPR liability.

No cookie consent mechanism detected

Your site loads tracking scripts (Google Analytics, Meta Pixel, etc.) but no cookie consent banner was found. GDPR and similar laws require informed consent before tracking EU visitors — fines can reach €20M.

No privacy policy link found

A privacy policy link is legally required in most jurisdictions if you collect any user data. It also builds trust with visitors who want to understand how their data is handled.

Viewport blocks user scaling

Your site prevents users from zooming in on mobile. This is a serious accessibility issue — many people with visual impairments rely on zoom. Apple and Google also penalise this in their quality guidelines.

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.

Not enough readable text content

This page has only about 3 readable words after ignoring scripts and styles. That may be too little context for AI systems and search engines.

No llms.txt file

An llms.txt file can help AI systems understand which product pages and context to prefer.

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.

No semantic HTML landmarks found

AI agents and screen readers navigate pages using semantic HTML landmarks. Without them, your content structure is invisible to machines.

Page has very little readable content in raw HTML

AI crawlers and search engines fetch raw HTML before running JavaScript. If your page has little visible text in the HTML, they see an almost-empty page.

Images missing alt text (accessibility)

Some images have no alt attribute at all. Screen readers will say "image" with no context, or skip the image entirely. This is an unambiguous accessibility failure.

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.