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taag.bio website review

Visit site (opens in a new tab)Reviewed 31 October 202615 issues · 69 checks

This review found 15 issues worth fixing on taag.bio, 5 of them high impact, across 69 checks. The most urgent: render-blocking requests. 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

Site score

84B

Closest competitors among reviewed websites

Compare side by side
Real-visitor load time (LCP)75th percentile, phones
3.2 s3.2 sSep 19Oct 243.2 s
Show as table
DateReal-visitor load time (LCP)
Sep 19, 20263.2 s
Sep 26, 20263.2 s
Oct 3, 20263.2 s
Oct 10, 20263.2 s
Oct 17, 20263.2 s
Oct 24, 20263.2 s

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

www.taag.bio (opens in a new tab)
Full-page screenshot of taag.bio (phone) rendered by Google PageSpeed Insights

How it loaded on a phone

  1. taag.bio at 0.4 s0.4 s
  2. taag.bio at 0.9 s0.9 s
  3. taag.bio at 1.3 s1.3 s
  4. taag.bio at 1.8 s1.8 s
  5. taag.bio at 2.2 s2.2 s
  6. taag.bio at 2.7 s2.7 s
  7. taag.bio at 3.1 s3.1 s
  8. taag.bio at 3.5 s3.5 s

Speed

3 to fix100

  • Render-blocking requests

    1.1 s

    3 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.1 s.

  • Reduce unused JavaScript

    306 KiB

    About 306 KiB of JavaScript is downloaded but never used on this page.

  • Google Tag Manager adds 211 ms

    211 ms

    Google Tag Manager costs a phone 211 ms of main-thread work and 499 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.

  • 2 third-party services on the page

    2 third-party services load with your homepage (Google Tag Manager and Google Analytics), adding 499 KiB and 211 ms of main-thread time.

  • 3 long tasks on the main thread

    3 long tasks block the main thread while loading, the longest for 77 ms. During a long task the page ignores taps.

  • Legacy JavaScript

    14 KiB

    Polyfills for old browsers add 14 KiB JavaScript that modern phones do not need.

  • 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.

  • Improve image delivery

    5 KiB

    1 image could be 5 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

3 checks passed

  • Mobile performance score: 100

    100/100

    Your mobile performance score is 100. That is in Google's “good” band (90 and up).

  • Main-thread work: 0.7 s

    A phone's processor spends 0.7 s on main-thread work while loading, 342 ms of it running JavaScript. That is comfortably low.

  • Server response: 43 ms

    43 ms

    Your server sent the HTML in 43 ms, well inside Google's 600 ms guideline.

Core Web Vitals

6 to fix33

  • Fails Core Web Vitals for real visitors

    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-user FCP: 3.2 s

    3.2 s

    Real visitors see the first content after 3.2 s (75th percentile). Good is under 1.8 s.

  • Real-user TTFB: 2.0 s

    2.0 s

    Real visitors wait 2.0 s for your server to start answering (75th percentile). Good is under 800 ms.

  • Real-user LCP: 3.3 s

    3.3 s

    Real visitors wait 3.3 s for the largest content to appear (75th percentile). Good is under 2.5 s.

  • Real-user INP: 242 ms

    242 ms

    Real visitors wait 242 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

  • Time to Interactive: 6.5 s

    6.5 s

    The page becomes fully interactive after 6.5 s. Good is under 3.8 s.

  • Largest content (LCP) held steady for real visitors

    -1%

    Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 3.2 s to 3.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

6 checks passed

  • Real-user CLS: 0.00

    0.00

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

  • First Contentful Paint: 1.2 s

    1.2 s

    The first text or image appears after 1.2 s, inside the 1.8 s “good” threshold.

  • Speed Index: 2.1 s

    2.1 s

    Visually, the page fills in at 2.1 s (Speed Index), inside the 3.4 s “good” threshold.

  • Cumulative Layout Shift: 0

    0

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

  • Largest Contentful Paint: 1.2 s

    1.2 s

    Your largest element renders in 1.2 s on a phone, inside Google's 2.5 s “good” threshold. The largest element is the text “Someday, every biological risk will be detected before it b…”.

  • Total Blocking Time: 49 ms

    49 ms

    Scripts block the page for only 49 ms while loading. Good is under 200 ms.

Images and page weight

100

  • About 0.3 g of CO₂ per visit

    0.26 g

    By the Sustainable Web Design model, a visit to your homepage emits about 0.26 g of CO₂e: 30.8 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

4 checks passed

  • Page weight: 928 KiB in 32 requests

    928 KiB

    Your homepage downloads 928 KiB in 32 requests on a phone: scripts 761 KiB (18), HTML 51 KiB (1) and images 43 KiB (4). That is a lean page.

  • 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

Google 100100
2 checks passed

  • Every image has alt text

    All 5 images in the HTML carry an alt attribute.

  • 42 automated accessibility rules passed

    axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 42 WCAG 2.2 A/AA and best-practice rules on the phone render: 42 passed and 0 failed. Automated rules catch about a third of accessibility problems; the rest need manual testing.

SEO

1 to fixGoogle 10096

  • No robots.txt

    There is no robots.txt at taag.bio/robots.txt, the first file search crawlers ask for.

  • 31 internal links, 8 external

    The homepage links to 31 pages on taag.bio and 8 external pages.

7 checks passed

  • Meta description: 155 characters

    Your meta description is 155 characters: “Molecular diagnostics, intelligent lab software, and TAAG services help you find biological risks before they disrupt f…”.

  • One H1 headline

    Your main headline reads: “Detect biological risk early, before it spreadsSomeday, every biological risk will be detected before it becomes a prob…”.

  • Title: 47 characters

    Your title is a healthy 47 characters: “Detect biological risk early, before it spreads”.

  • Canonical URL set

    The canonical URL is https://www.taag.bio/en.

  • Structured data in place

    Structured data found: LocalBusiness, Organization and WebSite.

  • Open Graph tags complete

    Open Graph tags are complete, so shared links show a title, description and image.

  • XML sitemap found

    Your XML sitemap is reachable at https://www.taag.bio/sitemap.xml.

AI search readiness

100
2 checks passed

  • Organization data: 6 of 6 facts

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

  • Text is in the HTML

    Your server sends the page's text in the HTML (279 words), so crawlers that don't run JavaScript still read it.

Other pages

1 to fix75

  • 2 linked pages are broken

    Your homepage links to https://www.taag.bio/en/insights and https://www.taag.bio/en/AboutUs, which answer with an error. Visitors hit a dead end and search engines drop them.

  • 2 pages slow to respond

    https://www.taag.bio/en/customized and https://www.taag.bio/en/TxA took over 3 s to send their HTML from our server.

  • 15 internal pages checked

    We fetched 15 pages linked from your homepage and read each the way a search engine does.

6 checks passed

  • Canonical URLs point to themselves

    No page we checked hands its ranking to a different URL.

  • Every page has a meta description

    All 4 pages that loaded have a meta description.

  • Titles are unique

    Every page we checked has its own title.

  • Every page has an H1

    Each page we checked has a main headline.

  • 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

Google 100100
3 checks passed

  • No console errors

    No JavaScript errors were logged while the page loaded on a phone.

  • Tap targets are thumb-sized

    12 of 13 tappable elements near the top are at least 24 px.

  • Mobile viewport set

    The page declares a mobile viewport.

Content and conversion

3 to fix81

  • No phone number on the homepage

    A local customer looking to call finds no phone number on the homepage. Add one, ideally as a tap-to-call link.

  • Thin social proof

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

  • Only about 188 words

    The homepage has only about 188 words of visible text; thin pages give Google and first-time buyers little to go on.

  • No opening hours

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

  • No form on the homepage

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

  • No map or directions link

    There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

  • No risk reducer

    No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

5 checks passed

  • Clear next step on the first screen

    On a phone, the first screen shows a clear next step: “TALK TO AN EXPERT”.

  • 2 calls to action

    The homepage has 2 calls to action, for example “Talk to an Expert” and “Contact”.

  • Analytics in place

    Analytics detected: Google Tag Manager and Google Analytics.

  • Direct contact links

    Visitors can reach you directly: 0 phone links and 1 email link.

  • LocalBusiness structured data

    Your homepage describes the business with LocalBusiness JSON-LD, so search engines and AI assistants can read its address, hours and phone reliably.

Privacy and tracking

1 to fix

  • 1 tracker load before any consent

    1

    Before a visitor clicks anything, the page loads Google Tag Manager (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.

  • 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.

  • 1 other company contacted

    Loading the homepage contacts 1 host 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 taag.bio, because details like these could help someone attack a site. Every review keeps them private, whatever they found.

Upkeep, stack and company

Stack

Framework
Next.js
Analytics
Google Analytics | Google Tag Manager
Hosting
Oracle Cloud

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

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