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jymsupplementscience.com website review

Visit site (opens in a new tab)Reviewed 8 November 202638 issues · 84 checks

This review found 38 issues worth fixing on jymsupplementscience.com, 12 of them high impact, across 84 checks. The most urgent: reduce unused JavaScript. Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.

  1. Homepage
  2. Phone render
  3. Links and pages
  4. Google PageSpeed

Google PageSpeed Insights (opens in a new tab), mobile

Real-visitor load time (LCP)75th percentile, phones
2.0 s1.7 sMay 16Oct 311.9 s
Show as table
DateReal-visitor load time (LCP)
May 16, 20261.7 s
May 23, 20261.7 s
May 30, 20261.8 s
Jun 6, 20261.8 s
Jun 13, 20261.8 s
Jun 20, 20261.9 s
Jun 27, 20261.9 s
Jul 4, 20261.9 s
Jul 11, 20261.9 s
Jul 18, 20261.9 s
Jul 25, 20261.9 s
Aug 1, 20261.9 s
Aug 8, 20261.9 s
Aug 15, 20261.9 s
Aug 22, 20261.8 s
Aug 29, 20261.8 s
Sep 5, 20261.8 s
Sep 12, 20261.8 s
Sep 19, 20261.8 s
Sep 26, 20261.8 s
Oct 3, 20261.7 s
Oct 10, 20261.8 s
Oct 17, 20261.9 s
Oct 24, 20261.9 s
Oct 31, 20261.9 s
Real-visitor tap response (INP)75th percentile, phones
141 ms117 msMay 16Oct 31134 ms
Show as table
DateReal-visitor tap response (INP)
May 16, 2026120 ms
May 23, 2026121 ms
May 30, 2026128 ms
Jun 6, 2026129 ms
Jun 13, 2026129 ms
Jun 20, 2026131 ms
Jun 27, 2026135 ms
Jul 4, 2026137 ms
Jul 11, 2026138 ms
Jul 18, 2026138 ms
Jul 25, 2026137 ms
Aug 1, 2026135 ms
Aug 8, 2026131 ms
Aug 15, 2026130 ms
Aug 22, 2026129 ms
Aug 29, 2026129 ms
Sep 5, 2026129 ms
Sep 12, 2026129 ms
Sep 19, 2026135 ms
Sep 26, 2026136 ms
Oct 3, 2026137 ms
Oct 10, 2026137 ms
Oct 17, 2026135 ms
Oct 24, 2026130 ms
Oct 31, 2026134 ms

Chrome UX Report (opens in a new tab): real Chrome visitors over rolling 28-day periods.

One score from every part of this review. How it works

Full-page screenshot of jymsupplementscience.com (phone) rendered by Google PageSpeed Insights

How it loaded on a phone

  1. jymsupplementscience.com at 0.4 s0.4 s
  2. jymsupplementscience.com at 0.8 s0.8 s
  3. jymsupplementscience.com at 1.1 s1.1 s
  4. jymsupplementscience.com at 1.5 s1.5 s
  5. jymsupplementscience.com at 1.9 s1.9 s
  6. jymsupplementscience.com at 2.3 s2.3 s
  7. jymsupplementscience.com at 2.6 s2.6 s
  8. jymsupplementscience.com at 3.0 s3.0 s

Speed

13 to fix55
  • Reduce unused JavaScript

    3.6 s · 751 KiB

    About 751 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 3.6 s faster on a phone.

  • Use efficient cache lifetimes

    2.2 s · 471 KiB

    31 files are served with short cache lifetimes, so returning visitors download them again (471 KiB).

  • Improve image delivery

    1.1 s · 710 KiB

    12 images could be 710 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 1.1 s faster on a phone.

  • 8 third-party services on the page

    8 third-party services load with your homepage (Shopify, alia-prod.com and rebuyengine.com and others), adding 2.6 MB and 751 ms of main-thread time.

  • Mobile performance score: 55

    55/100

    Your mobile performance score is 55. Pages that score under 90 lose visitors before the first paint.

  • Main-thread work: 4.0 s

    A phone's processor spends 4.0 s on main-thread work while loading, 1.8 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

  • Reduce unused CSS

    300 ms · 82 KiB

    About 82 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 300 ms faster on a phone.

  • Legacy JavaScript

    300 ms · 75 KiB

    Polyfills for old browsers add 75 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 300 ms faster on a phone.

  • Minify JavaScript

    300 ms · 52 KiB

    52 KiB could be saved by minifying JavaScript.

  • Render-blocking requests

    300 ms

    9 files block the first paint until they finish downloading. Deferring or inlining them could save about 300 ms.

  • Shopify adds 172 ms

    172 ms

    Shopify costs a phone 172 ms of main-thread work and 927 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.

  • rebuyengine.com adds 145 ms

    145 ms

    rebuyengine.com costs a phone 145 ms of main-thread work and 724 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.

  • 1,985 HTML elements

    The page has 1,985 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

  • 9 long tasks on the main thread

    9 long tasks block the main thread while loading, the longest for 105 ms. During a long task the page ignores taps.

  • Font display

    50 ms

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

  • Chained critical requests

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

  • Forced reflow

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

1 checks passed
  • Server response: 6 ms

    6 ms

    Your server sent the HTML in 6 ms, well inside Google's 600 ms guideline.

Core Web Vitals

5 to fix100
  • Largest Contentful Paint: 26.6 s

    26.6 s

    Your largest element takes 26.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “JYM Supplement Science”.

  • Time to Interactive: 27.8 s

    27.8 s

    The page becomes fully interactive after 27.8 s. Good is under 3.8 s.

  • Speed Index: 10.3 s

    10.3 s

    Visually, the page fills in at 10.3 s (Speed Index). Good is under 3.4 s.

  • First Contentful Paint: 4.2 s

    4.2 s

    The first text or image appears after 4.2 s on a phone. Good is under 1.8 s.

  • 1 image without width and height

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

  • Tap response (INP) got 10% slower for real visitors

    +10%

    Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 120 ms to 134 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

  • Largest content (LCP) held steady for real visitors

    +7%

    Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' largest content (lcp) went from 1.7 s to 1.9 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

8 checks passed
  • Passes Core Web Vitals for real visitors

    Real Chrome users on phones pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)).

  • Real-user LCP: 1.8 s

    1.8 s

    Real visitors wait 1.8 s for the largest content to appear (75th percentile). Good is under 2.5 s.

  • Real-user INP: 111 ms

    111 ms

    Real visitors wait 111 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

  • Real-user CLS: 0.00

    0.00

    For real visitors the layout shifts by 0.00 (75th percentile). Good is under 0.1.

  • Real-user FCP: 1.1 s

    1.1 s

    Real visitors see the first content after 1.1 s (75th percentile). Good is under 1.8 s.

  • Real-user TTFB: 430 ms

    430 ms

    Real visitors wait 430 ms for your server to start answering (75th percentile). Good is under 800 ms.

  • Total Blocking Time: 185 ms

    185 ms

    Scripts block the page for only 185 ms while loading. Good is under 200 ms.

  • Cumulative Layout Shift: 0

    0

    The layout barely moves while loading (CLS 0, good is under 0.1).

Images and page weight

1 to fix70
  • Page weight: 5.8 MB in 512 requests

    5.8 MB

    Your homepage downloads 5.8 MB in 512 requests on a phone: scripts 2.2 MB (200), images 1.4 MB (30) and other files 1.3 MB (230). Under 2 MB keeps phones on slow connections fast.

  • About 1.6 g of CO₂ per visit

    1.63 g

    By the Sustainable Web Design model, a visit to your homepage emits about 1.63 g of CO₂e: 195.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

3 checks passed
  • Images use modern formats

    Every sizeable image is WebP, AVIF or SVG.

  • Images load when needed

    Images below the first screen wait until the visitor scrolls to them.

  • Images are sized for phones

    No image is downloaded at more than three times the size it is drawn on a phone.

Accessibility

5 to fixGoogle 9694
  • 5 tap targets too small

    5 tap targets are too small or too close together to hit reliably with a finger.

  • 1 text element with low contrast

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

  • 3 links without text

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

  • ARIA role should be appropriate for the element (1 element)

    ARIA role should be appropriate for the element: 1 element on the page fails this check, rated minor by axe-core.

  • Alternative text of images should not be repeated as text (1 element)

    Alternative text of images should not be repeated as text: 1 element on the page fails this check, rated minor by axe-core.

  • Headings skip levels

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

2 checks passed
  • Every image has alt text

    All 18 images in the HTML carry an alt attribute.

  • 52 automated accessibility rules passed

    axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 57 WCAG 2.2 A/AA and best-practice rules on the phone render: 52 passed and 5 failed. 2 mores need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.

SEO

3 to fixGoogle 10088
  • Meta description is long (176 characters)

    Your meta description is 176 characters; Google truncates after about 160, so the end of your pitch is cut.

  • Structured data has 1 problem

    Structured data found (BreadcrumbList, Organization and WebSite) but with 1 problem, for example “WebSite: url is not an absolute URL ("jymsupplementscience.com")”.

  • No social preview image

    No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

  • 149 internal links, 14 external

    The homepage links to 149 pages on jymsupplementscience.com and 14 external pages.

5 checks passed
  • One H1 headline

    Your main headline reads: “JYM Supplement Science”.

  • Title: 44 characters

    Your title is a healthy 44 characters: “Real Science. Real Products. Unreal Results.”.

  • Canonical URL set

    The canonical URL is https://jymsupplementscience.com/.

  • robots.txt in place

    robots.txt is in place and points crawlers to your sitemap.

  • XML sitemap found

    Your XML sitemap is reachable at https://jymsupplementscience.com/sitemap.xml.

AI search readiness

100
4 checks passed
  • AI answer engines may read the site

    Your robots.txt lets the crawlers behind ChatGPT search, Claude and Perplexity read the site and cite it in answers.

  • Organization data: 5 of 6 facts

    Your Organization JSON-LD gives name, url, logo, sameAs (social profiles) and description; contact details would complete it.

  • Text is in the HTML

    Your server sends the page's text in the HTML (815 words), so crawlers that don't run JavaScript still read it.

  • llms.txt published

    The site publishes /llms.txt (6 KiB, 8 links), a plain-text guide to the site for AI tools.

Other pages

3 to fix78
  • 1 page points its canonical at the homepage

    /collections/eos26-25 declares the homepage as its canonical URL, which tells Google it is a copy of the homepage and keeps it out of search results. A site-wide template setting usually causes this.

  • 2 pages share a title

    / and /collections/eos26-25 all use the title “Real Science. Real Products. Unreal Results.”. Search engines can't tell which page to show for a search, so each competes with the others.

  • 1 page without an H1

    /products/pre-jym-preworkout has no <h1> headline, so visitors and search engines get no clear main topic.

  • 15 internal pages checked

    We fetched 15 pages linked from your homepage (of 65 found) and read each the way a search engine does.

4 checks passed
  • Linked pages load

    4 pages of 15 loaded without an error (the rest turned automated requests away).

  • Every page has a meta description

    All 4 pages that loaded have a meta description.

  • No linked page is hidden from search

    None of the pages we checked carries a noindex tag.

  • Every page has a title

    All 4 pages that loaded have a <title>.

Best practices

3 to fixGoogle 7385
  • 6 small tap targets

    6 of 22 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

  • 3 third-party cookies

    3 third-party cookies are set on load; browsers are restricting these, so whatever relies on them breaks.

  • 4 JavaScript errors while loading

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

  • Browser-reported issues

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

1 checks passed
  • Mobile viewport set

    The page declares a mobile viewport.

Content and conversion

4 to fix64
  • No call to action on the first screen

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

  • Thin social proof

    Social proof on the homepage: 1 trust badge. Pairing it with named testimonials or customer logos makes it far more convincing.

  • No analytics detected

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

  • No direct contact details

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

  • About 512 words of copy

    The homepage carries about 512 words of visible text.

3 checks passed
  • 19 calls to action

    The homepage has 19 calls to action, for example “Shop Collections”, “Shop All” and “Subscribe & Save”.

  • 2 short forms

    2 short forms (1 field at most) are right on the homepage.

  • Risk reducer mentioned

    A guarantee or risk reducer (money-back, free trial, no credit card or similar) is mentioned on the page.

Privacy and tracking

1 to fix
  • 7 trackers load before any consent

    7

    Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Klaviyo and Meta Pixel 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.

  • 29 cookies set on arrival

    29

    Opening the homepage sets 29 cookies (measured from a US location before any click).

  • No consent tool detected

    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.

  • 55 other companies contacted

    Loading the homepage contacts 55 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.

Security, domain, email and software versions

The security, domain and email checks, software and plugin versions, and any app with a known security problem are visible only to people at jymsupplementscience.com, because details like these could help someone attack a site. Every review keeps them private, whatever they found.

Apps on your store

Your storefront loads 17 apps. Each one is code from another company running for your shoppers.

Apps your storefront loads

Consentmo Gdpr · Skio Subscriptions Yc S20 · Klaviyo Email Marketing Sms · Easy Variant Images · Bundler Bundles App · Rebuy Personalization Engine · Seo Manager Venntov · Yotpo Loyalty Rewards · Triplewhale · Applovin Shop Integration · Gdpr Backpack · hulkapps.com · govx.com · cloudfront.net · sharethis.com · affiliatly.com · nice-team.net

Apps found in the homepage's code. Apps that only run in checkout or the admin aren't seen, and a headless storefront shows none. App data from programmable.info

Upkeep, stack and company

Stack

E-commerce
Shopify
Hosting
Cloudflare

Company

Headquarters
Westlake Village

Upkeep, stack, hiring and company data from programmable.info

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