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startupbuilder.co website review
Visit site (opens in a new tab)Reviewed 10 November 202617 issues · 67 checks
This review found 17 issues worth fixing on startupbuilder.co, 2 of them high impact, across 67 checks. The most urgent: <html> element must have a lang attribute (1 element). Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.
- Homepage
- Phone render
- Links and pages
- Google PageSpeed
Google PageSpeed Insights (opens in a new tab), mobile
Site score
83BClosest competitors among reviewed websites
Compare side by sideOne score from every part of this review. How it works
How it loaded on a phone
0.4 s
0.8 s
1.1 s
1.5 s
1.9 s
2.3 s
2.6 s
3.0 s
Speed
Mobile performance score: 80
80/100Your mobile performance score is 80. Pages that score under 90 lose visitors before the first paint.
Render-blocking requests
500 ms2 files block the first paint until they finish downloading. Deferring or inlining them could save about 500 ms.
Reduce unused JavaScript
280 ms · 141 KiBAbout 141 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 280 ms faster on a phone.
Legacy JavaScript
150 ms · 22 KiBPolyfills for old browsers add 22 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.
Improve image delivery
150 ms · 15 KiB1 image could be 15 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 150 ms faster on a phone.
Use efficient cache lifetimes
150 ms · 10 KiB2 files are served with short cache lifetimes, so returning visitors download them again (10 KiB).
Font display
100 msWeb fonts hide text while they load. Setting font-display: swap shows text immediately (about 100 ms).
3 third-party services on the page
3 third-party services load with your homepage (Google Tag Manager, LinkedIn Ads and Google Fonts), adding 151 KiB and 76 ms of main-thread time.
2 long tasks on the main thread
2 long tasks block the main thread while loading, the longest for 60 ms. During a long task the page ignores taps.
Chained critical requests
Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.
2 checks passed
Main-thread work: 0.4 s
A phone's processor spends 0.4 s on main-thread work while loading, 167 ms of it running JavaScript. That is comfortably low.
Server response: 1 ms
1 msYour server sent the HTML in 1 ms, well inside Google's 600 ms guideline.
Core Web Vitals
Largest Contentful Paint: 5.0 s
5.0 sYour largest element takes 5.0 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Startup founders collaborating on AI product strategy”.
Time to Interactive: 5.0 s
5.0 sThe page becomes fully interactive after 5.0 s. Good is under 3.8 s.
Speed Index: 4.1 s
4.1 sVisually, the page fills in at 4.1 s (Speed Index). Good is under 3.4 s.
Not enough real-visitor data yet
Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.
3 checks passed
Cumulative Layout Shift: 0
0The layout barely moves while loading (CLS 0, good is under 0.1).
First Contentful Paint: 0.8 s
0.8 sThe first text or image appears after 0.8 s, inside the 1.8 s “good” threshold.
Total Blocking Time: 13 ms
13 msScripts block the page for only 13 ms while loading. Good is under 200 ms.
Images and page weight
About 0.2 g of CO₂ per visit
0.19 gBy the Sustainable Web Design model, a visit to your homepage emits about 0.19 g of CO₂e: 22.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.
4 checks passed
Page weight: 670 KiB in 32 requests
670 KiBYour homepage downloads 670 KiB in 32 requests on a phone: scripts 274 KiB (14), fonts 252 KiB (5) and images 75 KiB (3). That is a lean page.
Images use modern formats
Every sizeable image is WebP, AVIF or SVG.
Images load when needed
Images below the first screen wait until the visitor scrolls to them.
Images are sized for phones
No image is downloaded at more than three times the size it is drawn on a phone.
Accessibility
<html> element must have a lang attribute (1 element)
<html> element must have a lang attribute: 1 element on the page fails this check, rated serious by axe-core.
All page content should be contained by landmarks (1 element)
All page content should be contained by landmarks: 1 element on the page fails this check, rated moderate by axe-core.
No page language
The <html> element has no lang attribute, so screen readers may read the page in the wrong voice and accent.
Headings skip levels
Headings skip levels (h1 → h3), which makes the page harder to scan with a screen reader.
2 checks passed
Every image has alt text
All 8 images in the HTML carry an alt attribute.
37 automated accessibility rules passed
axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 40 WCAG 2.2 A/AA and best-practice rules on the phone render: 37 passed and 3 failed. 1 more need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.
SEO
No structured data
No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.
No canonical URL
No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.
No social preview image
No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.
No XML sitemap
No XML sitemap at https://www.startupbuilder.co/sitemap.xml, so Google discovers your pages only by following links.
No robots.txt
There is no robots.txt at startupbuilder.co/robots.txt, the first file search crawlers ask for.
No X (Twitter) card tag
No twitter:card tag. X falls back to Open Graph, which is incomplete here.
11 internal links, 0 external
The homepage links to 11 pages on startupbuilder.co and 0 external pages.
3 checks passed
Meta description: 133 characters
Your meta description is 133 characters: “We help founders and startup teams design, build, and scale high-impact AI products and workflows. Join our selective A…”.
One H1 headline
Your main headline reads: “Product Accelerator for AI Startups”.
Title: 35 characters
Your title is a healthy 35 characters: “Product Accelerator for AI Startups”.
AI search readiness
No Organization structured data
There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.
No llms.txt
There is no https://www.startupbuilder.co/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.
2 checks passed
AI answer engines may read the site
There is no robots.txt, so nothing stops the crawlers behind ChatGPT search, Claude and Perplexity from reading the site and cite it in answers.
Text is in the HTML
Your server sends the page's text in the HTML (644 words), so crawlers that don't run JavaScript still read it.
Other pages
4 internal pages checked
We fetched 4 pages linked from your homepage and read each the way a search engine does.
7 checks passed
Linked pages load
All 4 pages we checked loaded without an error.
Canonical URLs point to themselves
No page we checked hands its ranking to a different URL.
Every page has a meta description
All 4 pages that loaded have a meta description.
Titles are unique
Every page we checked has its own title.
Every page has an H1
Each page we checked has a main headline.
No linked page is hidden from search
None of the pages we checked carries a noindex tag.
Every page has a title
All 4 pages that loaded have a <title>.
Best practices
3 checks passed
No console errors
No JavaScript errors were logged while the page loaded on a phone.
Tap targets are thumb-sized
9 of 9 tappable elements near the top are at least 24 px.
Mobile viewport set
The page declares a mobile viewport.
Content and conversion
Thin social proof
Social proof on the homepage: 4 testimonial or review blocks. Pairing it with named testimonials or customer logos makes it far more convincing.
No direct contact details
No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.
No form on the homepage
There is no form on the homepage, so every lead has to click through to another page first.
No risk reducer
No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.
About 635 words of copy
The homepage carries about 635 words of visible text.
3 checks passed
Clear next step on the first screen
On a phone, the first screen shows a clear next step: “Contact” and “Apply for Accelerator”.
8 calls to action
The homepage has 8 calls to action, for example “Contact”, “Apply for Accelerator” and “Start Founder Signup”.
Analytics in place
Analytics detected: Google Tag Manager and LinkedIn Insight.
Privacy and tracking
2 trackers load before any consent
2Before a visitor clicks anything, the page loads Google Tag Manager and LinkedIn Insight (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.
1 cookie set on arrival
1Opening the homepage sets 1 cookie, 1 of them by other companies (measured from a US location before any click).
No consent tool detected
No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.
4 other companies contacted
Loading the homepage contacts 4 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.
Security, domain, email and software versions
The security, domain and email checks, software and plugin versions, and any app with a known security problem are visible only to people at startupbuilder.co, because details like these could help someone attack a site. Every review keeps them private, whatever they found.
Upkeep, stack and company
Stack
- Framework
- Next.js
- Analytics
- Google Tag Manager
- Hosting
- CloudFront
Upkeep, stack, hiring and company data from programmable.info
Go beyond the website
What your $25 Growth Playbook adds
This review found 17 issues on startupbuilder.co, including 5 speed issues, 5 SEO issues and 2 conversion gaps. That is the website alone. The full Growth Playbook pairs these findings with what your customers say in public reviews and communities and what your closest competitors do better, then turns everything into at least 20 prioritised ideas, each with the evidence behind it, a step-by-step playbook, a metric and an owner.
- 28 research agents read your site, reviews, competitors, communities and public filings
- Customer review mining (G2, Capterra, Trustpilot and more) and voice-of-pain analysis in your buyers’ own words
- Competitor intelligence with battlecards for your closest rivals
- Ideal customer profile, buyer segments and buying-stage funnel
- Ranked channels, outreach sequences and content angles
- Live Reddit threads where buyers ask for what you sell, with draft replies
- Earned media and PR openings
- At least 20 ideas with evidence, a step-by-step playbook, metric, owner, effort and impact, grouped into this week, this quarter, big bets and wildcards, plus a 30/60/90-day roadmap
- PDF, Markdown, CSV, Notion and Linear exports, and a shareable page your team can track progress on
- Refresh the playbook later to see what changed
14-day money-back guarantee: not happy for any reason, email us within 14 days and we refund in full.