firstalert.com website review

17 files are served with short cache lifetimes, so returning visitors download them again (338 KiB).

8 third-party services load with your homepage (Google Tag Manager, Optimizely and Crazy Egg and others), adding 1.2 MB and 903 ms of main-thread time.

Your mobile performance score is 70 (desktop: 80). Pages that score under 90 lose visitors before the first paint.

About 587 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 300 ms faster on a phone.

6 files block the first paint until they finish downloading. Deferring or inlining them could save about 800 ms.

Google Tag Manager costs a phone 665 ms of main-thread work and 672 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 2.5 s on main-thread work while loading, 1.4 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

About 31 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.

9 long tasks block the main thread while loading, the longest for 180 ms. During a long task the page ignores taps.

3 images could be 65 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.

4 KiB could be saved by minifying CSS.

The page becomes fully interactive after 16.0 s. Good is under 3.8 s.

Visually, the page fills in at 9.0 s (Speed Index). Good is under 3.4 s.

Your largest element takes 4.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Shop the most trusted name in fire safety today”.

The first text or image appears after 2.6 s on a phone. Good is under 1.8 s.

Scripts block taps and scrolling for 234 ms in total while the page loads. Good is under 200 ms.

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' tap response (inp) went from 121 ms to 128 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 1.4 s to 1.3 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 3.4 MB in 342 requests on a phone: scripts 1.5 MB (65), other files 1.3 MB (231) and images 374 KiB (26). Under 2 MB keeps phones on slow connections fast.

1 image (42 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 0.97 g of CO₂e: 116.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

ARIA attributes must conform to valid values: 1 element on the page fails this check, rated critical by axe-core.

4 elements have a tabindex above 0, which scrambles the keyboard order.

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

All page content should be contained by landmarks: 2 elements on the page fail this check, rated moderate by axe-core.

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.

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

Headings skip levels (h2 → h4), which makes the page harder to scan with a screen reader.

Your title is 68 characters, so Google will cut it off around 60: “First Alert Fire Safety Products | Most Trusted Brand in Fire Safety”.

1 link use generic text like “click here” or “learn more”, which tells Google nothing about the page behind it.

The homepage links to 74 pages on firstalert.com and 34 external pages.

/collections/all has no meta description, so Google writes the search snippet from whatever text it finds.

We fetched 15 pages linked from your homepage (of 39 found) and read each the way a search engine does.

9 of 33 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

3 errors were logged to the browser console while the page loaded, for example “Uncaught Bazaarvoice is not configured for the domain www.firstalert.com.”.

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

HSTS is set, but max-age is 91 days; one year is the recommended minimum.

1 link go through two or more redirects, for example https://www.resideo.com/.

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.

X-XSS-Protection is set to “1; mode=block”; the header is deprecated and can introduce bugs. Use 0 or remove it.

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

firstalert.com is registered until Dec 2026. Make sure auto-renew is on and the card on file is current.

firstalert.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.

Social proof on the homepage: 2 trust badges. Pairing it with named testimonials or customer logos makes it far more convincing.

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.

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 385 words of visible text.

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 Google Ads, Google Analytics and Google Tag Manager (measured from a US location before any click). A consent tool (TrustArc) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 22 cookies, 1 of them by other companies (measured from a US location before any click).

Loading the homepage contacts 24 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.