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0of1.com website review
Visit site (opens in a new tab)Reviewed 9 November 20268 issues · 72 checks
This review found 8 issues worth fixing on 0of1.com, 3 of them high impact, across 72 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
92AClosest competitors among reviewed websites
Compare side by sideOne score from every part of this review. How it works
Speed
Render-blocking requests
150 ms1 file blocks the first paint until they finish downloading. Deferring or inlining it could save about 150 ms.
1 long task on the main thread
1 long task block the main thread while loading, the longest for 91 ms. During a long task the page ignores taps.
Reduce unused JavaScript
29 KiBAbout 29 KiB of JavaScript is downloaded but never used on this page.
Legacy JavaScript
14 KiBPolyfills for old browsers add 14 KiB JavaScript that modern phones do not need.
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: 100
100/100Your mobile performance score is 100. That is in Google's “good” band (90 and up).
Main-thread work: 0.3 s
A phone's processor spends 0.3 s on main-thread work while loading, 142 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
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.
6 checks passed
Speed Index: 2.3 s
2.3 sVisually, the page fills in at 2.3 s (Speed Index), inside the 3.4 s “good” threshold.
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.
Largest Contentful Paint: 0.8 s
0.8 sYour largest element renders in 0.8 s on a phone, inside Google's 2.5 s “good” threshold. The largest element is the text “Product, architecture, code, and the hard calls in between.”.
Total Blocking Time: 33 ms
33 msScripts block the page for only 33 ms while loading. Good is under 200 ms.
Time to Interactive: 1.9 s
1.9 sThe page is fully interactive after 1.9 s.
Images and page weight
About 0.06 g of CO₂ per visit
0.06 gBy the Sustainable Web Design model, a visit to your homepage emits about 0.06 g of CO₂e: 7.6 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: 228 KiB in 17 requests
228 KiBYour homepage downloads 228 KiB in 17 requests on a phone: scripts 155 KiB (8), fonts 55 KiB (3) and other files 7 KiB (4). 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.
1 checks passed
33 automated accessibility rules passed
axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 34 WCAG 2.2 A/AA and best-practice rules on the phone render: 33 passed and 1 failed. 1 more need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.
SEO
No canonical URL
No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.
5 internal links, 0 external
The homepage links to 5 pages on 0of1.com and 0 external pages.
7 checks passed
Meta description: 152 characters
Your meta description is 152 characters: “You think. I build. Constant-time founder support from Dom — technical co-founder, hands-on engineering, and affordable…”.
One H1 headline
Your main headline reads: “Product, architecture, code, and the hard calls in between.”.
Title: 41 characters
Your title is a healthy 41 characters: “O(1) — Technical Co-Founder, as a Service”.
Structured data in place
Structured data found: Organization and Person.
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.0of1.com/sitemap.xml.
AI search readiness
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
Your robots.txt lets the crawlers behind ChatGPT search, Claude and Perplexity read the site and cite it in answers.
Organization data: 5 of 6 facts
Your Organization JSON-LD gives name, url, logo, description and contact details; sameAs (social profiles) would complete it.
Other pages
2 pages with very little text
/work and /notes have 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.
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
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.
No clickjacking protection
Neither X-Frame-Options nor a CSP frame-ancestors policy is set, so any site can embed yours in a frame.
No X-Content-Type-Options
X-Content-Type-Options: nosniff is missing, so browsers may guess file types.
No Referrer-Policy
No Referrer-Policy header, so full URLs can leak to the sites you link to.
No Permissions-Policy
No Permissions-Policy header to switch off camera, microphone and location for embedded content.
No security.txt
There is no /.well-known/security.txt telling researchers how to report a security problem to you.
6 checks passed
Served over HTTPS
The homepage is served over HTTPS (0of1.com).
Valid certificate (42 days left)
The certificate from Let's Encrypt · YR1 verifies for 0of1.com and is valid for another 42 days.
HSTS enabled
Strict-Transport-Security is set, so browsers always use https.
http:// redirects to https
http://0of1.com redirects to the secure version.
HTTP/2
The server speaks HTTP/2, so browsers load many files over one connection.
All 5 links work
All 5 links checked from your homepage (5 internal, 0 external) answered without errors.
Domain and trust
DNSSEC is off
0of1.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.
3 checks passed
Domain is 10 years old
10 years0of1.com was registered in Sep 2016 through NameCheap, Inc.. An established domain carries more trust with email providers and search engines.
Certificate issuers are restricted
CAA records allow only sectigo.com, globalsign.com, letsencrypt.org and pki.goog to issue certificates for 0of1.com, so a mis-issued certificate from anyone else is refused.
Registered until Sep 2027
0of1.com is registered until Sep 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.
Only about 25 words
The homepage has only about 25 words of visible text; thin pages give Google and first-time buyers little to go on.
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.
3 checks passed
Clear next step on the first screen
On a phone, the first screen shows a clear next step: “Start a conversation →”.
1 call to action
The homepage has 1 call to action, for example “Start a conversation →”.
Direct contact links
Visitors can reach you directly: 0 phone links and 2 email links.
Email authentication
No DMARC policy
0of1.com has no DMARC record, so nothing tells receivers what to do with mail that fails SPF or DKIM. Gmail and Yahoo require DMARC from bulk senders.
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.
Email authentication score: 35/100
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
SPF in place (~all)
An SPF record lists your sending servers and marks other mail as suspicious (~all): “v=spf1 include:zoho.com ~all”.
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 8 issues on 0of1.com, including 1 SEO issue and 3 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.