Website review, no card needed
silverbackos.com website review
Visit site (opens in a new tab)Reviewed 9 November 202617 issues · 75 checks
This review found 17 issues worth fixing on silverbackos.com, 3 of them high impact, across 75 checks. The most urgent: 4 text elements with low contrast. 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
88BClosest 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
3.5 s
4.1 s
4.7 s
silverbackos.com does not allow embedding, so this is Google's rendering of the page.
Speed
Reduce unused JavaScript
280 ms · 50 KiBAbout 50 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 · 13 KiBPolyfills for old browsers add 13 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.
Render-blocking requests
100 ms1 file blocks the first paint until they finish downloading. Deferring or inlining it could save about 100 ms.
1 long task on the main thread
1 long task block the main thread while loading, the longest for 86 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.
3 checks passed
Mobile performance score: 94
94/100Your mobile performance score is 94. That is in Google's “good” band (90 and up).
Main-thread work: 0.5 s
A phone's processor spends 0.5 s on main-thread work while loading, 191 ms of it running JavaScript. That is comfortably low.
Server response: 2 ms
2 msYour server sent the HTML in 2 ms, well inside Google's 600 ms guideline.
Core Web Vitals
Speed Index: 4.0 s
4.0 sVisually, the page fills in at 4.0 s (Speed Index). Good is under 3.4 s.
Largest Contentful Paint: 2.7 s
2.7 sYour largest element takes 2.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Silverback is the world's most advanced AI performance oper…”. Most of its time is element render delay (3.0 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.
4 checks passed
Time to Interactive: 2.7 s
2.7 sThe page is fully interactive after 2.7 s.
Cumulative Layout Shift: 0
0The layout barely moves while loading (CLS 0, good is under 0.1).
First Contentful Paint: 0.9 s
0.9 sThe first text or image appears after 0.9 s, inside the 1.8 s “good” threshold.
Total Blocking Time: 36 ms
36 msScripts block the page for only 36 ms while loading. Good is under 200 ms.
Images and page weight
About 0.1 g of CO₂ per visit
0.11 gBy the Sustainable Web Design model, a visit to your homepage emits about 0.11 g of CO₂e: 13.0 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.
1 checks passed
Page weight: 392 KiB in 27 requests
392 KiBYour homepage downloads 392 KiB in 27 requests on a phone: scripts 223 KiB (16), fonts 134 KiB (5) and HTML 14 KiB (1). That is a lean page.
Accessibility
4 text elements with low contrast
4 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.
All page content should be contained by landmarks (24 elements)
All page content should be contained by landmarks: 24 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 1 image in the HTML carry an alt attribute.
34 automated accessibility rules passed
axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 37 WCAG 2.2 A/AA and best-practice rules on the phone render: 34 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.silverbackos.com/sitemap.xml, so Google discovers your pages only by following links.
No robots.txt
There is no robots.txt at silverbackos.com/robots.txt, the first file search crawlers ask for.
15 internal links, 0 external
The homepage links to 15 pages on silverbackos.com and 0 external pages.
3 checks passed
Meta description: 148 characters
Your meta description is 148 characters: “The AI operating system for high-performers. Digital Twin, Life Score, AI Coach, Morning Brief — everything you need to…”.
One H1 headline
Your main headline reads: “The AI ThatRuns Your Life”.
Title: 33 characters
Your title is a healthy 33 characters: “Silverback — Human Performance OS”.
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 /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 (725 words), so crawlers that don't run JavaScript still read it.
Other pages
5 pages share a meta description
/legal/privacy, /legal/terms, /legal/cookies, /legal/health-disclaimer and /legal/ai-disclaimer use the same meta description. A description written for each page earns more clicks.
5 internal pages checked
We fetched 5 pages linked from your homepage and read each the way a search engine does.
7 checks passed
Linked pages load
All 5 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 5 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 5 pages that loaded have a <title>.
Best practices
2 checks passed
No console errors
No JavaScript errors were logged while the page loaded on a phone.
Mobile viewport set
The page declares a mobile viewport.
Security and trust
No Content-Security-Policy
No Content-Security-Policy header, the main browser-side defence against injected scripts.
Deprecated X-XSS-Protection
X-XSS-Protection is set to “1; mode=block”; the header is deprecated and can introduce bugs. Use 0 or remove it.
No security.txt
There is no /.well-known/security.txt telling researchers how to report a security problem to you.
7 checks passed
Served over HTTPS
The homepage is served over HTTPS (silverbackos.com).
Valid certificate (50 days left)
The certificate from Let's Encrypt · YR2 verifies for silverbackos.com and is valid for another 50 days.
Protected from clickjacking
X-Frame-Options or a frame-ancestors policy stops other sites framing yours.
HSTS enabled
Strict-Transport-Security is set, so browsers always use https.
http:// redirects to https
http://silverbackos.com redirects to the secure version.
HTTP/2
The server speaks HTTP/2, so browsers load many files over one connection.
All 10 links work
All 10 links checked from your homepage (10 internal, 0 external) answered without errors.
Domain and trust
Domain registered 3 months ago
3 monthssilverbackos.com was registered in Jul 2026 through GoDaddy.com, LLC. Spam filters and search engines treat brand-new domains more cautiously, so expect email and rankings to take a few months to settle.
DNSSEC is off
silverbackos.com's DNS answers are not signed. DNSSEC stops attackers forging them to send visitors or email elsewhere; most registrars switch it on in a click, though most sites still run without it.
2 checks passed
Certificate issuers are restricted
CAA records allow only pki.goog, sectigo.com, globalsign.com and letsencrypt.org to issue certificates for silverbackos.com, so a mis-issued certificate from anyone else is refused.
Registered until Jul 2027
silverbackos.com is registered until Jul 2027.
Content and conversion
No social proof
No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.
No analytics detected
No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.
No form on the homepage
There is no form on the homepage, so every lead has to click through to another page first.
About 652 words of copy
The homepage carries about 652 words of visible text.
4 checks passed
Clear next step on the first screen
On a phone, the first screen shows a clear next step: “Get Started” and “Start Free →”.
5 calls to action
The homepage has 5 calls to action, for example “Get Started”, “Start Free →” and “Start Pro”.
Direct contact links
Visitors can reach you directly: 0 phone links and 1 email link.
Risk reducer mentioned
A guarantee or risk reducer (money-back, free trial, no credit card or similar) is mentioned on the page.
Email authentication
No SPF record
silverbackos.com has no SPF record, so mail servers can't tell which servers may send email as you. Your mail lands in spam more often, and anyone can send mail pretending to be you.
No DKIM key on the usual selectors
We found no DKIM key on the selectors the big email providers use. If you send through one of them, turning on DKIM signing improves delivery.
Domain receives no email
silverbackos.com has no MX record, so it receives no email. SPF -all and DMARC reject still matter: they stop others sending mail as you.
Email authentication score: 40/100
Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.
1 checks passed
DMARC policy: quarantine
DMARC tells receivers to quarantine mail that fails authentication, and sends you reports.
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 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).
Upkeep, stack and company
No signs of neglect in what was checked: the copyright year, CMS and plugin versions, and jQuery.
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 17 issues on silverbackos.com, including 2 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.