appdynamics.com website review

Google Tag Manager costs a phone 1.5 s of main-thread work and 1.6 MB of downloads while your page loads. That alone is enough to make taps feel slow. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

9 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.5 s.

Your mobile performance score is 43 (desktop: 66). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 7.6 s on main-thread work while loading, 5.3 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Google Tag Manager, reddit and signalfx.com and others), adding 2.3 MB and 2.8 s of main-thread time.

About 1,015 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 600 ms faster on a phone.

34 files are served with short cache lifetimes, so returning visitors download them again (650 KiB).

20 long tasks block the main thread while loading, the longest for 500 ms. During a long task the page ignores taps.

reddit costs a phone 459 ms of main-thread work and 26 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.

About 89 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.

The page has 1,774 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Polyfills for old browsers add 66 KiB JavaScript that modern phones do not need.

1 image could be 22 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

9 KiB JavaScript is shipped twice across bundles.

8 KiB could be saved by minifying JavaScript.

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

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 visitors wait 4.2 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 4.1 s (75th percentile). Good is under 1.8 s.

The page becomes fully interactive after 30.9 s. Good is under 3.8 s.

Your largest element takes 7.9 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “AppD + Splunk”.

Scripts block taps and scrolling for 1.5 s in total while the page loads. Good is under 200 ms.

Visually, the page fills in at 6.5 s (Speed Index). Good is under 3.4 s.

Real visitors wait 350 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Real visitors wait 1.7 s for your server to start answering (75th percentile). Good is under 800 ms.

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

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

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 335 ms to 356 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 4.1 s to 4.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 4.1 MB in 312 requests on a phone: scripts 2.8 MB (75), images 594 KiB (111) and fonts 367 KiB (3). Under 2 MB keeps phones on slow connections fast.

1 image (49 KiB) is 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.

4 images further down the page (128 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 1.17 g of CO₂e: 140.7 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

7 elements use ARIA attributes their role does not allow, which confuses screen readers.

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

1 image has no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 43 elements on the page fail this check, rated moderate by axe-core.

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

1 visible link has no text or label, so screen readers cannot say where it goes.

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

Your meta description is 170 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found ((untyped) and NewsArticle) but with 3 problems, for example “block has no @type”.

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

The homepage links to 135 pages on appdynamics.com and 29 external pages.

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.

There is no /llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

We fetched 15 pages linked from your homepage (of 107 found) and read each the way a search engine does.

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

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

1 error was logged to the browser console while the page loaded, for example “Cannot read properties of undefined (reading 'addEventListener')”.

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

X-Content-Type-Options: nosniff is missing, so browsers may guess file types.

Opening https://appdynamics.com goes through 2 redirects before the homepage loads.

1 link go through two or more redirects, for example http://help.splunk.com/.

No Referrer-Policy header, so full URLs can leak to the sites you link to.

No Permissions-Policy header to switch off camera, microphone and location for embedded content.

splunk.com is registered until Dec 2026. Make sure auto-renew is on and the card on file is current.

splunk.com has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

splunk.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.

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

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 574 words of visible text.

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.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, LinkedIn Insight and Meta Pixel and 2 mores (measured from a US location before any click). A consent tool (OneTrust) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 13 cookies (measured from a US location before any click).

Loading the homepage contacts 40 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.