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tso.co website review
Visit site (opens in a new tab)Reviewed 10 November 202634 issues · 86 checks
This review found 34 issues worth fixing on tso.co, 8 of them high impact, across 86 checks. The most urgent: reduce unused JavaScript. Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.
- Homepage
- Phone render
- Links and pages
- Google PageSpeed
Google PageSpeed Insights (opens in a new tab), mobile
Site score
87B- #6,984 of 98,445 reviewed websitesbeats 90%
- #3,943 of 53,747 online storesbeats 89%
- #3,825 of 48,754 Shopify storesbeats 88%
Closest competitors among Shopify stores
Compare side by sideShow as table
| Date | Real-visitor load time (LCP) |
|---|---|
| May 23, 2026 | 1.3 s |
| May 30, 2026 | 1.3 s |
| Jun 6, 2026 | 1.3 s |
| Jun 13, 2026 | 1.4 s |
| Jun 20, 2026 | 1.5 s |
| Jun 27, 2026 | 1.7 s |
| Jul 4, 2026 | 1.7 s |
| Jul 11, 2026 | 1.7 s |
| Jul 18, 2026 | 1.7 s |
| Jul 25, 2026 | 1.5 s |
| Aug 1, 2026 | 1.5 s |
| Aug 8, 2026 | 1.5 s |
| Aug 15, 2026 | 1.4 s |
| Aug 22, 2026 | 1.4 s |
| Aug 29, 2026 | 1.5 s |
| Sep 5, 2026 | 1.5 s |
| Sep 12, 2026 | 1.6 s |
| Sep 19, 2026 | 1.6 s |
| Sep 26, 2026 | 1.6 s |
| Oct 3, 2026 | 1.5 s |
| Oct 10, 2026 | 1.5 s |
| Oct 17, 2026 | 1.5 s |
| Oct 24, 2026 | 1.4 s |
| Oct 31, 2026 | 1.5 s |
| Nov 7, 2026 | 1.5 s |
Show as table
| Date | Real-visitor tap response (INP) |
|---|---|
| May 23, 2026 | 129 ms |
| May 30, 2026 | 129 ms |
| Jun 6, 2026 | 135 ms |
| Jun 13, 2026 | 136 ms |
| Jun 20, 2026 | 137 ms |
| Jun 27, 2026 | 137 ms |
| Jul 4, 2026 | 131 ms |
| Jul 11, 2026 | 135 ms |
| Jul 18, 2026 | 131 ms |
| Jul 25, 2026 | 129 ms |
| Aug 1, 2026 | 130 ms |
| Aug 8, 2026 | 130 ms |
| Aug 15, 2026 | 131 ms |
| Aug 22, 2026 | 137 ms |
| Aug 29, 2026 | 143 ms |
| Sep 5, 2026 | 146 ms |
| Sep 12, 2026 | 154 ms |
| Sep 19, 2026 | 161 ms |
| Sep 26, 2026 | 154 ms |
| Oct 3, 2026 | 162 ms |
| Oct 10, 2026 | 162 ms |
| Oct 17, 2026 | 162 ms |
| Oct 24, 2026 | 162 ms |
| Oct 31, 2026 | 162 ms |
| Nov 7, 2026 | 162 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
Speed
Reduce unused JavaScript
3.1 s · 660 KiBAbout 660 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 3.1 s faster on a phone.
Improve image delivery
650 ms · 783 KiB12 images could be 783 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 650 ms faster on a phone.
Mobile performance score: 60
60/100Your mobile performance score is 60. Pages that score under 90 lose visitors before the first paint.
8 third-party services on the page
8 third-party services load with your homepage (Google Tag Manager, Affirm and Klaviyo and others), adding 2.2 MB and 761 ms of main-thread time.
Use efficient cache lifetimes
750 ms · 196 KiB9 files are served with short cache lifetimes, so returning visitors download them again (196 KiB).
Google Tag Manager adds 314 ms
314 msGoogle Tag Manager costs a phone 314 ms of main-thread work and 550 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.
Main-thread work: 2.7 s
A phone's processor spends 2.7 s on main-thread work while loading, 1.5 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.
Klaviyo adds 118 ms
118 msKlaviyo costs a phone 118 ms of main-thread work and 1.1 MB 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.
2,004 HTML elements
The page has 2,004 HTML elements. Above 1,500, rendering and every interaction get slower on phones.
Shopify adds 47 ms
47 msShopify costs a phone 47 ms of main-thread work and 363 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.
7 long tasks on the main thread
7 long tasks block the main thread while loading, the longest for 249 ms. During a long task the page ignores taps.
Render-blocking requests
100 ms10 files block the first paint until they finish downloading. Deferring or inlining them could save about 100 ms.
Reduce unused CSS
50 ms · 10 KiBAbout 10 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 50 ms faster on a phone.
Legacy JavaScript
25 KiBPolyfills for old browsers add 25 KiB JavaScript that modern phones do not need.
Minify CSS
7 KiB7 KiB could be saved by minifying CSS.
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.
Minify JavaScript
4 KiB4 KiB could be saved by minifying JavaScript.
1 checks passed
Server response: 16 ms
16 msYour server sent the HTML in 16 ms, well inside Google's 600 ms guideline.
Core Web Vitals
Largest Contentful Paint: 17.6 s
17.6 sYour largest element takes 17.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Avalanche Grey 2026 Ford F250 on a 8" TSO Mini Cradle 4 Lin…”.
Time to Interactive: 18.7 s
18.7 sThe page becomes fully interactive after 18.7 s. Good is under 3.8 s.
Speed Index: 8.8 s
8.8 sVisually, the page fills in at 8.8 s (Speed Index). Good is under 3.4 s.
Tap response (INP) got 26% slower for real visitors
+26%Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 129 ms to 162 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).
First Contentful Paint: 2.1 s
2.1 sThe first text or image appears after 2.1 s on a phone. Good is under 1.8 s.
Total Blocking Time: 256 ms
256 msScripts block taps and scrolling for 256 ms in total while the page loads. Good is under 200 ms.
Largest content (LCP) got 10% slower for real visitors
+10%Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' largest content (lcp) went from 1.3 s to 1.5 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).
7 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: 1.2 s
1.2 sReal visitors wait 1.2 s for the largest content to appear (75th percentile). Good is under 2.5 s.
Real-user INP: 121 ms
121 msReal visitors wait 121 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.
Real-user CLS: 0.00
0.00For real visitors the layout shifts by 0.00 (75th percentile). Good is under 0.1.
Real-user FCP: 1.0 s
1.0 sReal visitors see the first content after 1.0 s (75th percentile). Good is under 1.8 s.
Real-user TTFB: 360 ms
360 msReal visitors wait 360 ms for your server to start answering (75th percentile). Good is under 800 ms.
Cumulative Layout Shift: 0
0The layout barely moves while loading (CLS 0, good is under 0.1).
Images and page weight
Page weight: 4.5 MB in 282 requests
4.5 MBYour homepage downloads 4.5 MB in 282 requests on a phone: images 1.6 MB (21), scripts 1.6 MB (98) and other files 958 KiB (125). Under 2 MB keeps phones on slow connections fast.
8 images in older formats
8 images (770 KiB) are 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.
8 images below the first screen load straight away
8 images further down the page (770 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.
1 image far larger than shown
133 KiB1 image is downloaded at several times the size a phone draws it, for example IMG_6482.jpg at 1,000 px wide, shown at 175 px. Resized copies would save about 133 KiB.
About 1.3 g of CO₂ per visit
1.27 gBy the Sustainable Web Design model, a visit to your homepage emits about 1.27 g of CO₂e: 152.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.
Accessibility
12 text elements with low contrast
12 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.
Scrollable region must have keyboard access (1 element)
Scrollable region must have keyboard access: 1 element on the page fails this check, rated serious by axe-core.
All page content should be contained by landmarks (3 elements)
All page content should be contained by landmarks: 3 elements on the page fail this check, rated moderate by axe-core.
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.
Elements with visible text labels do not have matching accessible names.
Elements with visible text labels do not have matching accessible names. (1 element).
2 checks passed
Every image has alt text
All 12 images in the HTML carry an alt attribute.
56 automated accessibility rules passed
axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 60 WCAG 2.2 A/AA and best-practice rules on the phone render: 56 passed and 4 failed. 3 mores need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.
SEO
Title is short (17 characters)
Your title is only 17 characters: “TSO Manufacturing”. Between 30 and 65 characters leaves room to say what you do and for whom.
Meta description is short (62 characters)
Your meta description is only 62 characters: “We're making customization accessible to the everyday builder.”. 70 to 160 characters is enough to sell the click.
2 links crawlers can't follow
2 links have no real href, so search engines can't follow them.
70 internal links, 11 external
The homepage links to 70 pages on tso.co and 11 external pages.
6 checks passed
One H1 headline
Your main headline reads: “Love What You Drive.”.
Canonical URL set
The canonical URL is https://tso.co/.
Structured data in place
Structured data found: AutoPartsStore and WebSite.
Open Graph tags complete
Open Graph tags are complete, so shared links show a title, description and image.
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://tso.co/sitemap.xml.
AI search readiness
No Organization structured data
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.
3 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.
Text is in the HTML
Your server sends the page's text in the HTML (3,025 words), so crawlers that don't run JavaScript still read it.
llms.txt published
The site publishes https://tso.co/llms.txt (6 KiB, 8 links), a plain-text guide to the site for AI tools.
Other pages
1 page without a title
https://tso.co/customer_authentication/redirect has no <title>, so Google invents the link text in results.
1 linked page hidden from search
https://tso.co/customer_authentication/redirect is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.
11 pages without a meta description
https://tso.co/customer_authentication/redirect, https://tso.co/collections/suspension, https://tso.co/collections/frame-overlays, https://tso.co/collections/traction-bars, https://tso.co/collections/mud-flaps and https://tso.co/collections/emblems and 5 others have no meta description, so Google writes the search snippet from whatever text it finds.
2 pages without an H1
https://tso.co/customer_authentication/redirect and https://tso.co/pages/tso-about-us have 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 29 found) and read each the way a search engine does.
3 checks passed
Linked pages load
All 15 pages we checked loaded without an error.
Canonical URLs point to themselves
No page we checked hands its ranking to a different URL.
Titles are unique
Every page we checked has its own title.
Best practices
3 checks passed
No console errors
No JavaScript errors were logged while the page loaded on a phone.
Tap targets are thumb-sized
54 of 57 tappable elements near the top are at least 24 px.
Mobile viewport set
The page declares a mobile viewport.
Content and conversion
Local business without LocalBusiness data
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.
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.
About 1,029 words of copy
The homepage carries about 1,029 words of visible text.
8 checks passed
Clear next step on the first screen
On a phone, the first screen shows a clear next step: “Call (423) 524-9311” and “or talk to a builder · (423) 524-9311 →”.
14 calls to action
The homepage has 14 calls to action, for example “Shop by Vehicle”, “Shop by Category” and “Shop All”.
6 short forms
6 short forms (1 field at most) are right on the homepage.
Social proof on the page
Social proof on the homepage: 1 customer or partner logo, a star rating and “Over 35,000+ Customers”.
Analytics in place
Analytics detected: Google Tag Manager and Google Analytics.
Direct contact links
Visitors can reach you directly: 3 phone links and 0 email links.
Opening hours shown
Your opening hours are on the homepage.
Phone number on the homepage
Your phone number is on the homepage as a tap-to-call link.
Privacy and tracking
6 trackers load before any consent
6Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Klaviyo and Meta Pixel and 1 more (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.
20 cookies set on arrival
20Opening the homepage sets 20 cookies, 1 of them by other companies (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.
39 other companies contacted
Loading the homepage contacts 39 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 tso.co, 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 10 apps. Each one is code from another company running for your shoppers.
Apps your storefront loads
Triplewhale · Klaviyo Email Marketing Sms · Affirm · Zipifypages · Forms · Rivo Loyalty Rewards Referrals · govx.com · gorgias.chat · socialsnowball.io · 9gtb.com
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
- Framework
- jQuery
- E-commerce
- Shopify
- Analytics
- Google Analytics | Google Tag Manager
- Hosting
- Shopify
Upkeep, stack, hiring and company data from programmable.info
Go beyond the website
What your $25 Growth Playbook adds
This review found 34 issues on tso.co, including 16 speed issues, 3 SEO issues and 1 conversion gap. That is the website alone. The full Growth Playbook pairs these findings with what your customers say in public reviews and communities and what your closest competitors do better, then turns everything into at least 20 prioritised ideas, each with the evidence behind it, a step-by-step playbook, a metric and an owner.
- 28 research agents read your site, reviews, competitors, communities and public filings
- Customer review mining (G2, Capterra, Trustpilot and more) and voice-of-pain analysis in your buyers’ own words
- Competitor intelligence with battlecards for your closest rivals
- Ideal customer profile, buyer segments and buying-stage funnel
- Ranked channels, outreach sequences and content angles
- Live Reddit threads where buyers ask for what you sell, with draft replies
- Earned media and PR openings
- At least 20 ideas with evidence, a step-by-step playbook, metric, owner, effort and impact, grouped into this week, this quarter, big bets and wildcards, plus a 30/60/90-day roadmap
- PDF, Markdown, CSV, Notion and Linear exports, and a shareable page your team can track progress on
- Refresh the playbook later to see what changed
14-day money-back guarantee: not happy for any reason, email us within 14 days and we refund in full.