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gremlin.com website review
Visit site (opens in a new tab)Reviewed 25 October 202635 issues · 108 checks
This review found 35 issues worth fixing on gremlin.com, 15 of them high impact, across 108 checks. The most urgent: render-blocking requests. Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.
Read the full growth playbook for Gremlin
- Homepage
- Phone render
- Links and pages
- Google PageSpeed
Google PageSpeed Insights (opens in a new tab), mobile
Site score
70CClosest competitors among SaaS websites
Compare side by sideShow as table
| Date | Real-visitor load time (LCP) |
|---|---|
| May 2, 2026 | 4.0 s |
| May 9, 2026 | 3.8 s |
| May 16, 2026 | 3.8 s |
| May 23, 2026 | 3.7 s |
| May 30, 2026 | 3.5 s |
| Jun 6, 2026 | 3.5 s |
| Jun 13, 2026 | 3.4 s |
| Jun 20, 2026 | 3.4 s |
| Jun 27, 2026 | 3.9 s |
| Jul 4, 2026 | 3.9 s |
| Jul 11, 2026 | 3.9 s |
| Jul 18, 2026 | 4.2 s |
| Jul 25, 2026 | 3.7 s |
| Aug 1, 2026 | 3.5 s |
| Aug 8, 2026 | 3.5 s |
| Aug 15, 2026 | 3.6 s |
| Aug 22, 2026 | 3.6 s |
| Aug 29, 2026 | 3.7 s |
| Sep 5, 2026 | 3.9 s |
| Sep 12, 2026 | 3.7 s |
| Sep 19, 2026 | 3.7 s |
| Sep 26, 2026 | 3.8 s |
| Oct 3, 2026 | 3.7 s |
| Oct 10, 2026 | 3.8 s |
| Oct 17, 2026 | 4.2 s |
Show as table
| Date | Real-visitor tap response (INP) |
|---|---|
| May 2, 2026 | 109 ms |
| May 9, 2026 | 113 ms |
| May 16, 2026 | 113 ms |
| May 23, 2026 | 110 ms |
| May 30, 2026 | 94 ms |
| Jun 6, 2026 | 88 ms |
| Jun 13, 2026 | 86 ms |
| Jun 20, 2026 | 86 ms |
| Jun 27, 2026 | 95 ms |
| Jul 4, 2026 | 95 ms |
| Jul 11, 2026 | 100 ms |
| Jul 18, 2026 | 106 ms |
| Jul 25, 2026 | 99 ms |
| Aug 1, 2026 | 131 ms |
| Aug 8, 2026 | 138 ms |
| Aug 15, 2026 | 141 ms |
| Aug 22, 2026 | 145 ms |
| Aug 29, 2026 | 130 ms |
| Sep 5, 2026 | 130 ms |
| Sep 12, 2026 | 148 ms |
| Sep 19, 2026 | 136 ms |
| Sep 26, 2026 | 140 ms |
| Oct 3, 2026 | 132 ms |
| Oct 10, 2026 | 125 ms |
| Oct 17, 2026 | 132 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
How it loaded on a phone
0.6 s
1.1 s
1.7 s
2.2 s
2.8 s
3.3 s
3.9 s
4.5 s
gremlin.com does not allow embedding, so this is Google's rendering of the page.
Speed
Render-blocking requests
7.0 s27 files block the first paint until they finish downloading. Deferring or inlining them could save about 7.0 s.
Reduce unused JavaScript
2.1 s · 734 KiBAbout 734 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.1 s faster on a phone.
Mobile performance score: 28
28/100Your mobile performance score is 28 (desktop: 47). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.
Main-thread work: 7.7 s
A phone's processor spends 7.7 s on main-thread work while loading, 3.8 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.
Use efficient cache lifetimes
100 ms · 8.3 MB62 files are served with short cache lifetimes, so returning visitors download them again (8.3 MB).
8 third-party services on the page
8 third-party services load with your homepage (Google Tag Manager, website-files.com and JSDelivr CDN and others), adding 10.4 MB and 1.8 s of main-thread time.
website-files.com adds 428 ms
428 mswebsite-files.com costs a phone 428 ms of main-thread work and 9.4 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.
Reduce unused CSS
690 ms · 207 KiBAbout 207 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 690 ms faster on a phone.
Google Tag Manager adds 732 ms
732 msGoogle Tag Manager costs a phone 732 ms of main-thread work and 306 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.
20 long tasks on the main thread
20 long tasks block the main thread while loading, the longest for 417 ms. During a long task the page ignores taps.
JSDelivr CDN adds 170 ms
170 msJSDelivr CDN costs a phone 170 ms of main-thread work and 342 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.
Duplicated JavaScript
100 ms · 22 KiB22 KiB JavaScript is shipped twice across bundles. Google estimates it would make the page about 100 ms faster on a phone.
Font display
100 msWeb fonts hide text while they load. Setting font-display: swap shows text immediately (about 100 ms).
Improve image delivery
51 KiB3 images could be 51 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.
Legacy JavaScript
17 KiBPolyfills for old browsers add 17 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.
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 msYour server sent the HTML in 6 ms, well inside Google's 600 ms guideline.
Core Web Vitals
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 LCP: 5.1 s
5.1 sReal visitors wait 5.1 s for the largest content to appear (75th percentile). Good is under 2.5 s.
Real-user FCP: 4.8 s
4.8 sReal visitors see the first content after 4.8 s (75th percentile). Good is under 1.8 s.
Real-user TTFB: 2.2 s
2.2 sReal visitors wait 2.2 s for your server to start answering (75th percentile). Good is under 800 ms.
First Contentful Paint: 8.4 s
8.4 sThe first text or image appears after 8.4 s on a phone. Good is under 1.8 s.
Largest Contentful Paint: 12.4 s
12.4 sYour largest element takes 12.4 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Most teams learn where they're fragile as things break. Gre…”.
Time to Interactive: 22.9 s
22.9 sThe page becomes fully interactive after 22.9 s. Good is under 3.8 s.
Total Blocking Time: 2.1 s
2.1 sScripts block taps and scrolling for 2.1 s in total while the page loads. Good is under 200 ms.
Speed Index: 9.1 s
9.1 sVisually, the page fills in at 9.1 s (Speed Index). Good is under 3.4 s.
Real-user INP: 208 ms
208 msReal visitors wait 208 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.
3 images without width and height
3 images have no width and height attributes, so the layout jumps as each one loads.
Tap response (INP) got 16% slower for real visitors
+16%Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 109 ms to 132 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).
Largest content (LCP) held steady for real visitors
+3%Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 4.0 s to 4.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).
2 checks passed
Real-user CLS: 0.02
0.02For real visitors the layout shifts by 0.02 (75th percentile). Good is under 0.1.
Cumulative Layout Shift: 0
0The layout barely moves while loading (CLS 0, good is under 0.1).
Images and page weight
Page weight: 11.9 MB in 179 requests
11.9 MBYour homepage downloads 11.9 MB in 179 requests on a phone: media 8.1 MB (2), scripts 1.8 MB (79) and fonts 840 KiB (34). Under 2 MB keeps phones on slow connections fast.
1 image far larger than shown
52 KiB1 image is downloaded at several times the size a phone draws it, for example 6a2a25daa224aef6b62d6b8b_5b4c39cf1914e4d6f98f065e96472eb8_Ho at 1,280 px wide, shown at 342 px. Resized copies would save about 52 KiB.
About 3.4 g of CO₂ per visit
3.38 gBy the Sustainable Web Design model, a visit to your homepage emits about 3.38 g of CO₂e: 405.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.
2 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.
Accessibility
10 text elements with low contrast
10 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.
All page content should be contained by landmarks (81 elements)
All page content should be contained by landmarks: 81 elements on the page fail this check, rated moderate by axe-core.
No main landmark
The page has no <main> landmark, so screen-reader users cannot jump straight to the content.
2 links without text
2 visible links have no text or label, so screen readers cannot say where they go.
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 103 images in the HTML carry an alt attribute.
49 automated accessibility rules passed
axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 54 WCAG 2.2 A/AA and best-practice rules on the phone render: 49 passed and 5 failed. 3 mores need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.
SEO
Structured data has 1 problem
Structured data found (Organization and SoftwareApplication) but with 1 problem, for example “SoftwareApplication: url is not an absolute URL ("/")”.
1 link with vague text
1 link use generic text like “click here” or “learn more”, which tells Google nothing about the page behind it.
76 internal links, 8 external
The homepage links to 76 pages on gremlin.com and 8 external pages.
7 checks passed
Meta description: 145 characters
Your meta description is 145 characters: “Reduce downtime, improve resilience, and protect revenue. Gremlin helps teams see where systems will fail, fix them fir…”.
One H1 headline
Your main headline reads: “Stop guessing about your reliability. Start proving it.”.
Title: 64 characters
Your title is a healthy 64 characters: “Enterprise Reliability Management & Resilience Testing | Gremlin”.
Canonical URL set
The canonical URL is https://www.gremlin.com/.
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://www.gremlin.com/sitemap.xml.
AI search readiness
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, description and contact details; sameAs (social profiles) would complete it.
Text is in the HTML
Your server sends the page's text in the HTML (1,867 words), so crawlers that don't run JavaScript still read it.
llms.txt published
The site publishes /llms.txt (98 KiB, 892 links), a plain-text guide to the site for AI tools.
Other pages
1 page slow to respond
/product took over 3 s to send its HTML from our server.
15 internal pages checked
We fetched 15 pages linked from your homepage (of 54 found) and read each the way a search engine does.
7 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.
Every page has a meta description
All 15 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 15 pages that loaded have a <title>.
Best practices
2 JavaScript errors while loading
2 errors were logged to the browser console while the page loaded, for example “Error: <svg> attribute width: Expected length, "auto".”.
Missing source maps
Large scripts ship without source maps.
2 checks passed
Tap targets are thumb-sized
6 of 7 tappable elements near the top are at least 24 px.
Mobile viewport set
The page declares a mobile viewport.
Security and trust
No X-Content-Type-Options
X-Content-Type-Options: nosniff is missing, so browsers may guess file types.
No Referrer-Policy
No Referrer-Policy header, so full URLs can leak to the sites you link to.
No Permissions-Policy
No Permissions-Policy header to switch off camera, microphone and location for embedded content.
No security.txt
There is no /.well-known/security.txt telling researchers how to report a security problem to you.
8 checks passed
Served over HTTPS
The homepage is served over HTTPS (gremlin.com).
Valid certificate (41 days left)
The certificate from Google Trust Services · WE1 verifies for gremlin.com and is valid for another 41 days.
Protected from clickjacking
X-Frame-Options or a frame-ancestors policy stops other sites framing yours.
Content-Security-Policy set
A Content-Security-Policy is set, the main browser-side defence against injected scripts.
HSTS enabled
Strict-Transport-Security is set, so browsers always use https.
http:// redirects to https
http://gremlin.com redirects to the secure version.
HTTP/2 and HTTP/3
The server speaks HTTP/2 and advertises HTTP/3, so browsers load many files over one connection.
All 47 links work
All 47 links checked from your homepage (40 internal, 7 external) answered without errors.
Domain and trust
DNSSEC is off
gremlin.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.
3 checks passed
Domain is 26 years old
26 yearsgremlin.com was registered in May 2000 through Amazon Registrar, Inc.. An established domain carries more trust with email providers and search engines.
Certificate issuers are restricted
CAA records allow only pki.goog, amazon.com and letsencrypt.org to issue certificates for gremlin.com, so a mis-issued certificate from anyone else is refused.
Registered until May 2027
gremlin.com is registered until May 2027.
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 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.
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.
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.
About 1,339 words of copy
The homepage carries about 1,339 words of visible text.
4 checks passed
Clear next step on the first screen
On a phone, the first screen shows a clear next step: “BOOK A DEMO”.
7 calls to action
The homepage has 7 calls to action, for example “Pricing”, “Contact usGet in touch with Gremlin.” and “CONTACT US”.
Social proof on the page
Social proof on the homepage: 6 testimonial or review blocks, 13 customer or partner logos, 6 trust badges and “100M customers”.
Analytics in place
Analytics detected: Google Analytics and HubSpot.
Email authentication
DMARC is monitor-only (p=none)
DMARC is set to p=none, so mail pretending to be gremlin.com is still delivered. Reports are on, so moving to quarantine is the next step.
Email authentication score: 70/100
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.
2 checks passed
SPF in place (~all)
An SPF record lists your sending servers and marks other mail as suspicious (~all): “v=spf1 include:servers.mcsv.net include:aspmx.pardot.com include:_spf.google.com include:mail.zendesk.com include:mktom…”.
DKIM signing found
A DKIM key is published (selector “google”, “k1” and “s1”), so receivers can verify mail really came from you.
Privacy and tracking
5 trackers load before any consent
5Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, HubSpot and LinkedIn Insight (measured from a US location before any click). A consent tool (HubSpot cookie banner) is installed; check it blocks these until visitors agree where the law requires it.
13 cookies set on arrival
13Opening the homepage sets 13 cookies (measured from a US location before any click).
40 other companies contacted
Loading the homepage contacts 40 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.
1 checks passed
Consent tool: HubSpot cookie banner
A consent management tool (HubSpot cookie banner) loads with the page.
Upkeep, stack and company
No signs of neglect in what was checked: the copyright year, CMS and plugin versions, and jQuery.
Stack
- CMS
- Webflow
- Framework
- Tailwind CSS
- Analytics
- Google Analytics
Hiring
- Hiring
- 4 open roles
- Teams
- Engineering (2), Marketing (1), Sales (1)
- Job board
- greenhouse
- Careers page
- www.gremlin.com/team (opens in a new tab)
Upkeep, stack, hiring and company data from programmable.info
Go beyond the website
What your $25 Growth Playbook adds
This review found 35 issues on gremlin.com, including 22 speed issues, 2 SEO issues and 3 conversion gaps. 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.