jpetazzo.github.io website review

2 files block the first paint until they finish downloading. Deferring or inlining them could save about 400 ms.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

2 files are served with short cache lifetimes, so returning visitors download them again (3 KiB).

Visually, the page fills in at 3.5 s (Speed Index). Good is under 3.4 s.

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.

By the Sustainable Web Design model, a visit to your homepage emits about 0.00 g of CO₂e: 0.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

72 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

<html> element must have a lang attribute: 1 element on the page fails this check, rated serious by axe-core.

The page has no <main> landmark, so screen-reader users cannot jump straight to the content.

All page content should be contained by landmarks: 1 element on the page fails this check, rated moderate by axe-core.

The <html> element has no lang attribute, so screen readers may read the page in the wrong voice and accent.

No meta description, so Google writes its own snippet from whatever text it finds.

Your title is only 5 characters: “index”. Between 30 and 65 characters leaves room to say what you do and for whom.

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.

No Open Graph image (also missing: og:title, og:description), so links shared on LinkedIn, Slack or Facebook show no preview picture.

No XML sitemap at https://jpetazzo.github.io/sitemap.xml, so Google discovers your pages only by following links.

There is no robots.txt at jpetazzo.github.io/robots.txt, the first file search crawlers ask for.

No favicon is declared in the HTML, so browser tabs and Google's mobile results may show a generic icon.

No twitter:card tag. X falls back to Open Graph, which is incomplete here.

The homepage links to 142 pages on jpetazzo.github.io and 22 external pages.

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.

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.

/2025/11/19/patching-kube-dns-corefile-terraform, /2025/09/18/conferences-speaker-mentoring, /2025/09/09/conferences-speakers-lineup, /2024/07/26/cloudflare-images-overcharge-billing, /2024/05/12/understanding-kubernetes-dns-hostnetwork-dnspolicy-dnsconfigforming and /2024/04/29/six-months-with-wayland-sway-i3 and 9 others have no meta description, so Google writes the search snippet from whatever text it finds.

We fetched 15 pages linked from your homepage (of 69 found) and read each the way a search engine does.

6 of 16 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: the server responded with a status of 404 ()”.

http://jpetazzo.github.io does not redirect to https, so some visitors land on the insecure version.

2 links to other sites are dead, for example https://botbot.me/freenode/docker/ (520).

No Strict-Transport-Security header, so browsers may still try plain http first on a return visit.

No Content-Security-Policy header, the main browser-side defence against injected scripts.

Neither X-Frame-Options nor a CSP frame-ancestors policy is set, so any site can embed yours in a frame.

X-Content-Type-Options: nosniff is missing, so browsers may guess file types.

4 links go through two or more redirects, for example https://containerjournal.com/2018/12/12/what-is-service-mesh-and-why-do-we-need-it/.

No Referrer-Policy header, so full URLs can leak to the sites you link to.

No Permissions-Policy header to switch off camera, microphone and location for embedded content.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

We found no call-to-action buttons or links (such as “Book a demo” or “Get a quote”) anywhere on the homepage.

No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

There is no form on the homepage, so every lead has to click through to another page first.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 4,156 words of visible text.

jpetazzo.github.io 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.

jpetazzo.github.io 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.

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.

jpetazzo.github.io 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: 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.

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.