reefnutrition.com website review

About 820 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.1 s faster on a phone.

6 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.4 s.

A phone's processor spends 4.3 s on main-thread work while loading, 1.3 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

22 images could be 663 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 600 ms faster on a phone.

Your mobile performance score is 51. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (route.com, Shopify and rechargecdn.com and others), adding 1.7 MB and 770 ms of main-thread time.

24 files are served with short cache lifetimes, so returning visitors download them again (601 KiB).

About 76 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

6 long tasks block the main thread while loading, the longest for 352 ms. During a long task the page ignores taps.

route.com costs a phone 277 ms of main-thread work and 542 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.

Shopify costs a phone 230 ms of main-thread work and 526 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 2,321 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Polyfills for old browsers add 7 KiB JavaScript that modern phones do not need.

6 KiB could be saved by minifying CSS.

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.

3 KiB could be saved by minifying JavaScript.

Your largest element takes 9.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the element shown below.

The page becomes fully interactive after 17.9 s. Good is under 3.8 s.

The layout shifts by 0.321 while loading, so content jumps under the reader's thumb. Good is under 0.1.

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

The first text or image appears after 2.1 s on a phone. Good is under 1.8 s.

Visually, the page fills in at 4.0 s (Speed Index). Good is under 3.4 s.

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

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 85 ms to 86 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 4.5 MB in 298 requests on a phone: scripts 1.6 MB (84), images 1.5 MB (40) and other files 1.0 MB (150). Under 2 MB keeps phones on slow connections fast.

2 images are downloaded at several times the size a phone draws them, for example 1050x750-1_4c4f3c7b-d240-400e-a555-fb265428e7c2.jpg at 1,050 px wide, shown at 342 px. Resized copies would save about 118 KiB.

1 image further down the page (116 KiB) download before anyone scrolls to it. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 1.28 g of CO₂e: 153.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

2 buttons have no accessible name, so screen readers announce just “button”.

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

Elements must only use permitted ARIA attributes: 1 element on the page fails this check, rated serious by axe-core.

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

41 images have no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 18 elements on the page fail this check, rated moderate by axe-core.

The viewport tag blocks pinch-zoom, which low-vision visitors rely on.

16 visible links have no text or label, so screen readers cannot say where they go.

3 form fields have no label, so screen readers announce an empty box and autofill guesses.

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

Headings should not be empty: 3 elements on the page fail this check, rated minor by axe-core.

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

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

Your title is 66 characters, so Google will cut it off around 60: “Reef Nutrition | Best Aquarium Food for a Healthy Spectacular Tank”.

There are 4 <h1> headlines (“TDO For Freshwater Animals”, “TDO For Saltwater Animals” and “20 Years”). One clear main headline is easier for people and search engines.

Your meta description is 315 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found (BreadcrumbList, Organization and WebSite) but with 2 problems, for example “Organization: logo is not an absolute URL ("//reefnutrition.com/cdn/shop/files/rn_logo_large_58644d…”.

7 links have no real href, so search engines can't follow them.

The homepage links to 383 pages on reefnutrition.com and 9 external pages.

Your Organization JSON-LD is missing sameAs (social profiles), description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

We fetched 15 pages linked from your homepage (of 125 found) and read each the way a search engine does.

40 of 72 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

The page uses 1 deprecated browser API that will stop working in future browsers (“Unload event listeners are deprecated and will be removed.”).

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

Social proof on the homepage: 95 testimonial or review blocks. 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 1,597 words of visible text.

Before a visitor clicks anything, the page loads Amplitude, Google Ads, Google Analytics, Google Tag Manager and Meta Pixel (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 15 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 32 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.