cio.com website review

18 files block the first paint until they finish downloading. Deferring or inlining them could save about 3.0 s.

A phone's processor spends 9.4 s on main-thread work while loading, 6.1 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (YouTube, Google Tag Manager and onthe.io and others), adding 4.5 MB and 3.5 s of main-thread time.

About 2.6 MB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 150 ms faster on a phone.

32 files are served with short cache lifetimes, so returning visitors download them again (1.3 MB).

YouTube costs a phone 957 ms of main-thread work and 2.8 MB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

Your mobile performance score is 50. Pages that score under 90 lose visitors before the first paint.

About 232 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 600 ms faster on a phone.

Google Tag Manager costs a phone 753 ms of main-thread work and 551 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

onthe.io costs a phone 631 ms of main-thread work and 18 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

Polyfills for old browsers add 192 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 300 ms faster on a phone.

3 images could be 128 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 300 ms faster on a phone.

permutive.app costs a phone 391 ms of main-thread work and 184 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

20 long tasks block the main thread while loading, the longest for 393 ms. During a long task the page ignores taps.

Facebook costs a phone 350 ms of main-thread work and 255 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

The page has 2,397 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).

7 KiB could be saved by minifying JavaScript.

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.

4 KiB could be saved by minifying CSS.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Real visitors wait 2.2 s for your server to start answering (75th percentile). Good is under 800 ms.

The page becomes fully interactive after 33.2 s. Good is under 3.8 s.

Visually, the page fills in at 10.6 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 1.2 s in total while the page loads. Good is under 200 ms.

The first text or image appears after 3.0 s on a phone. Good is under 1.8 s.

Real visitors wait 2.9 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors wait 209 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 126 ms to 187 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Real visitors see the first content after 2.8 s (75th percentile). Good is under 1.8 s.

Your largest element takes 3.8 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Image”.

1 image have no width and height attributes, so the layout jumps as each one loads.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 2.3 s to 2.3 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 6.7 MB in 259 requests on a phone: scripts 5.3 MB (73), images 392 KiB (48) and stylesheets 346 KiB (23). Under 2 MB keeps phones on slow connections fast.

1 image (32 KiB) is 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.

By the Sustainable Web Design model, a visit to your homepage emits about 1.89 g of CO₂e: 226.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

1 element hidden from screen readers can still receive keyboard focus.

Links must have discernible text: 1 element on the page fails this check, rated serious by axe-core.

1 image has no alt text, which hurts accessibility and image search.

Document should not have more than one banner landmark: 1 element on the page fails this check, rated moderate by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 1 element on the page fails this check, rated moderate by axe-core.

Page should contain a level-one heading: 1 element on the page fails this check, rated moderate by axe-core.

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

1 form field has no label, so screen readers announce an empty box and autofill guesses.

Elements with visible text labels do not have matching accessible names. (31 elements).

There is no <h1>, so neither visitors nor Google get a clear main headline.

No twitter:card tag. X falls back to Open Graph, which is set, so this is minor.

The homepage links to 186 pages on cio.com and 34 external pages.

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.

robots.txt blocks GPTBot, ClaudeBot, Google-Extended, Applebot-Extended and CCBot, which collect pages to train models. That's a legitimate choice and doesn't by itself stop the site appearing in AI answers, which the crawlers above handle.

/contributor-content is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.

/events and /contributor-content have no meta description, so Google writes the search snippet from whatever text it finds.

/contributor-content has no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 94 found) and read each the way a search engine does.

5 errors were logged to the browser console while the page loaded, for example “consentManager is not defined”.

Chrome logged issues while loading the page (“Cookie”).

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

8 links go through two or more redirects, for example http://pubads.g.doubleclick.net/gampad/clk?id=7457894118&iu=/8456/IDG.G_B2B_CIO.com.

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

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.

cio.com has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

cio.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.

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

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

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 1,518 words of visible text.

DMARC is set to p=none, so mail pretending to be cio.com is still delivered. Reports are on, so moving to quarantine is the next step.

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.

Before a visitor clicks anything, the page loads Amazon Ads, Google Ads, Google Analytics, Google Tag Manager and LinkedIn Insight and 6 mores (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.

Opening the homepage sets 37 cookies, 2 of them by other companies (measured from a US location before any click).

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.

Loading the homepage contacts 67 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.