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captainsubmit.com website review
Visit site (opens in a new tab)Reviewed 11 November 202626 issues · 76 checks
This review found 26 issues worth fixing on captainsubmit.com, 10 of them high impact, across 76 checks. The most urgent: render-blocking requests. 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
79CClosest competitors among reviewed websites
Compare side by sideOne score from every part of this review. How it works
How it loaded on a phone
0.6 s
1.2 s
1.8 s
2.4 s
3.0 s
3.6 s
4.2 s
4.8 s
Speed
Render-blocking requests
1.3 s12 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.3 s.
Mobile performance score: 62
62/100Your mobile performance score is 62. Pages that score under 90 lose visitors before the first paint.
Reduce unused CSS
750 ms · 143 KiBAbout 143 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 750 ms faster on a phone.
Reduce unused JavaScript
450 ms · 92 KiBAbout 92 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 450 ms faster on a phone.
Improve image delivery
283 KiB4 images could be 283 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.
4 long tasks on the main thread
4 long tasks block the main thread while loading, the longest for 172 ms. During a long task the page ignores taps.
Legacy JavaScript
150 ms · 12 KiBPolyfills for old browsers add 12 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.
Font display
50 msWeb fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).
Minify JavaScript
14 KiB14 KiB could be saved by minifying JavaScript.
Minify CSS
13 KiB13 KiB could be saved by minifying CSS.
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.
Forced reflow
Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.
1 third-party service on the page
1 third-party service load with your homepage (Google Fonts), adding 1 KiB and 0 ms of main-thread time.
2 checks passed
Main-thread work: 1.6 s
A phone's processor spends 1.6 s on main-thread work while loading, 262 ms of it running JavaScript. That is comfortably low.
Server response: 13 ms
13 msYour server sent the HTML in 13 ms, well inside Google's 600 ms guideline.
Core Web Vitals
Largest Contentful Paint: 8.4 s
8.4 sYour largest element takes 8.4 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the element shown below.
Time to Interactive: 8.6 s
8.6 sThe page becomes fully interactive after 8.6 s. Good is under 3.8 s.
Speed Index: 6.5 s
6.5 sVisually, the page fills in at 6.5 s (Speed Index). Good is under 3.4 s.
First Contentful Paint: 3.2 s
3.2 sThe first text or image appears after 3.2 s on a phone. Good is under 1.8 s.
30 images without width and height
30 images have no width and height attributes, so the layout jumps as each one loads.
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.
2 checks passed
Total Blocking Time: 145 ms
145 msScripts block the page for only 145 ms while loading. Good is under 200 ms.
Cumulative Layout Shift: 0
0The layout barely moves while loading (CLS 0, good is under 0.1).
Images and page weight
Page weight: 3.8 MB in 45 requests
3.8 MBYour homepage downloads 3.8 MB in 45 requests on a phone: media 2.1 MB (1), images 804 KiB (11) and fonts 431 KiB (3). Under 2 MB keeps phones on slow connections fast.
3 images far larger than shown
191 KiB3 images are downloaded at several times the size a phone draws them, for example izys-logo.png at 700 px wide, shown at 119 px. Resized copies would save about 191 KiB.
4 images in older formats
4 images (373 KiB) are JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.
1 image below the first screen load straight away
1 image further down the page (102 KiB) download before anyone scrolls to it. Adding loading="lazy" lets the first screen load first.
About 1.1 g of CO₂ per visit
1.09 gBy the Sustainable Web Design model, a visit to your homepage emits about 1.09 g of CO₂e: 130.8 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.
Accessibility
19 text elements with low contrast
19 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.
Scrollable region must have keyboard access (2 elements)
Scrollable region must have keyboard access: 2 elements on the page fail this check, rated serious by axe-core.
Elements must only use permitted ARIA attributes (1 element)
Elements must only use permitted ARIA attributes: 1 element on the page fails this check, rated serious by axe-core.
All page content should be contained by landmarks (50 elements)
All page content should be contained by landmarks: 50 elements on the page fail this check, rated moderate by axe-core.
No main landmark
The page has no <main> landmark, so screen-reader users cannot jump straight to the content.
2 checks passed
Every image has alt text
All 42 images in the HTML carry an alt attribute.
35 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: 35 passed and 5 failed. 3 mores need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.
SEO
Title is long (75 characters)
Your title is 75 characters, so Google will cut it off around 60: “Logiciels métier & applications sur mesure pour PME et TPE | Captain Submit”.
Meta description is long (200 characters)
Your meta description is 200 characters; Google truncates after about 160, so the end of your pitch is cut.
36 internal links, 1 external
The homepage links to 36 pages on captainsubmit.com and 1 external page.
6 checks passed
One H1 headline
Your main headline reads: “De l'idéeau produit”.
Canonical URL set
The canonical URL is https://www.captainsubmit.com/.
Structured data in place
Structured data found: FAQPage, ItemList, Organization, WebPage and WebSite.
Open Graph tags complete
Open Graph tags are complete, so shared links show a title, description and image.
robots.txt in place
robots.txt is in place and points crawlers to your sitemap.
XML sitemap found
Your XML sitemap is reachable at https://www.captainsubmit.com/sitemap.xml.
AI search readiness
4 checks passed
AI answer engines may read the site
Your robots.txt lets the crawlers behind ChatGPT search, Claude and Perplexity read the site and cite it in answers.
Organization data: 6 of 6 facts
Your Organization JSON-LD gives name, url, logo, sameAs (social profiles), description and contact details.
Text is in the HTML
Your server sends the page's text in the HTML (1,196 words), so crawlers that don't run JavaScript still read it.
llms.txt published
The site publishes https://www.captainsubmit.com/llms.txt (9 KiB, 12 links), a plain-text guide to the site for AI tools.
Other pages
3 pages point its canonical at the homepage
https://www.captainsubmit.com/about, https://www.captainsubmit.com/blogs and https://www.captainsubmit.com/contact declare the homepage as their canonical URL, which tells Google they are copies of the homepage and keeps them out of search results. A site-wide template setting usually causes this.
1 page without an H1
https://www.captainsubmit.com/realisations has no <h1> headline, so visitors and search engines get no clear main topic.
1 page with very little text
https://www.captainsubmit.com/contact has under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.
15 internal pages checked
We fetched 15 pages linked from your homepage (of 18 found) and read each the way a search engine does.
5 checks passed
Linked pages load
14 pages of 15 loaded without an error (the rest turned automated requests away).
Every page has a meta description
All 14 pages that loaded have a meta description.
Titles are unique
Every page we checked has its own title.
No linked page is hidden from search
None of the pages we checked carries a noindex tag.
Every page has a title
All 14 pages that loaded have a <title>.
Best practices
3 JavaScript errors while loading
3 errors were logged to the browser console while the page loaded, for example “Loading the stylesheet 'https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap' vio…”.
Browser-reported issues
Chrome logged issues while loading the page (“Content security policy”).
2 checks passed
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
No call to action on the first screen
On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.
Local business without LocalBusiness data
Your homepage shows a street address but no LocalBusiness JSON-LD, so Google and AI assistants have to guess your address, hours and phone from the page text.
No phone number on the homepage
A local customer looking to call finds no phone number on the homepage. Add one, ideally as a tap-to-call link.
No analytics detected
No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.
No opening hours
The homepage shows no opening hours. If customers visit or call, show when.
No form on the homepage
There is no form on the homepage, so every lead has to click through to another page first.
No map or directions link
There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.
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 1,189 words of copy
The homepage carries about 1,189 words of visible text.
3 checks passed
1 call to action
The homepage has 1 call to action, for example “[email protected]”.
Social proof on the page
Social proof on the homepage: 30 customer or partner logos, a star rating and “40+ Clients”.
Direct contact links
Visitors can reach you directly: 0 phone links and 1 email link.
Privacy and tracking
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.
1 other company contacted
Loading the homepage contacts 1 host run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.
1 checks passed
No known trackers before consent
No known advertising or analytics trackers load before a visitor clicks anything (measured from a US location before any click).
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 captainsubmit.com, 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
- Hosting
- Vercel
Upkeep, stack, hiring and company data from programmable.info
Go beyond the website
What your $25 Growth Playbook adds
This review found 26 issues on captainsubmit.com, including 10 speed issues, 2 SEO issues and 4 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.