mailinglists.com website review

About 779 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.1 s faster on a phone.

56 files are served with short cache lifetimes, so returning visitors download them again (542 KiB).

Your mobile performance score is 38. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

8 third-party services load with your homepage (hsappstatic.net, Hubspot and Google Tag Manager and others), adding 1.9 MB and 1.6 s of main-thread time.

15 files block the first paint until they finish downloading. Deferring or inlining them could save about 750 ms.

hsappstatic.net costs a phone 416 ms of main-thread work and 715 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.

Hubspot costs a phone 386 ms of main-thread work and 376 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.

Google Tag Manager costs a phone 366 ms of main-thread work and 561 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.

A phone's processor spends 3.8 s on main-thread work while loading, 1.9 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

16 long tasks block the main thread while loading, the longest for 291 ms. During a long task the page ignores taps.

About 71 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 150 ms faster on a phone.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 100 ms).

Polyfills for old browsers add 30 KiB JavaScript that modern phones do not need.

1 image could be 21 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

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.

The first text or image appears after 8.3 s on a phone. Good is under 1.8 s.

Your largest element takes 8.3 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “We make data easy.”.

The page becomes fully interactive after 17.8 s. Good is under 3.8 s.

Visually, the page fills in at 8.3 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 832 ms in total while the page loads. Good is under 200 ms.

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

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.

Your homepage downloads 2.3 MB in 121 requests on a phone: scripts 1.8 MB (41), fonts 173 KiB (5) and stylesheets 154 KiB (18). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 0.64 g of CO₂e: 77.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

ARIA dialog and alertdialog nodes should have an accessible name: 1 element on the page fails this check, rated serious by axe-core.

1 text element doesn't have enough contrast against the background to read easily, especially outdoors on a phone.

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

Headings skip levels (h1 → h3 and h3 → h5), which makes the page harder to scan with a screen reader.

Your title is 66 characters, so Google will cut it off around 60: “Marketing Data & Mailing Lists | Accurate, Compliant Audience Data”.

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

4 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

The homepage links to 78 pages on mailinglists.com and 12 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 https://mailinglists.com/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.

https://mailinglists.com/data-products, https://mailinglists.com/business-mailing-lists, https://mailinglists.com/new-business-leads, https://mailinglists.com/industry-data, https://mailinglists.com/uk-business-mailing-lists and https://mailinglists.com/mailinglists-xpress-dun-bradstreet and 6 others have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 47 found) and read each the way a search engine does.

1 third-party cookie is set on load; browsers are restricting these, so whatever relies on them breaks.

2 errors were logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_SOCKET_NOT_CONNECTED”.

1 image is displayed at the wrong aspect ratio, so it looks stretched or squashed.

1 image is served at too low a resolution for sharp phone screens.

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

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

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.

The homepage shows no opening hours. If customers visit or call, show when.

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

The homepage carries about 545 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Hotjar and HubSpot and 2 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 13 cookies (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 41 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.