speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

Charts Compare Measurement runs Embed a score Open to Work

ibm.com

https://www.ibm.com/

25PERF 77A11Y 73BEST 92SEO ✗AXE ✗CWV

Ranks Overall #1,810 Big Tech #24

Data from Oct 9, 2026, 3:07 AM UTC old, older than this category's 3 days freshness target Measured every 2 days · 23 runs since Aug 28, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

This data is old.

Sites are measured on a rolling schedule, so figures here are the newest successful measurement rather than a reading taken just now. Comparisons against other sites may span different points in time.

This URL redirects to https://www.ibm.com/us-en.

The site’s front door pointing at the page it serves there — a locale or CMS landing path, not a move. The origin is still the address of the site, so history stays under it rather than forking to a path that depends on where the measurement ran. Lighthouse follows the redirect, so the numbers below describe the page actually served; the only cost is an extra hop on each run.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Uses Lit 2.8.0Lit 2.8.0
Akamai Hosted by Akamai

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 25.66 s. Compare this filmstrip against another site.

  1. 3.21 s
  2. 6.42 s
  3. 9.62 s
  4. 12.83 s
  5. 16.04 s
  6. 19.25 s
  7. 22.45 s
  8. 25.66 s

Lighthouse Scores LAB Simulated

25
Performance
no change
77
Accessibility
no change
73
Best Practices
no change
92
SEO
no change

Metrics LAB FIELD

Core Web Vitals: failing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-09 → 2026-10-06), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 28.26 s poor ↑ +189 ms (+0.7%) 21.30 s – 30.25 s 4.47 s poor 42.1% 27.3% 30.6%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 382 ms needs work 48.3% 34% 17.8%
CLS CWV Cumulative Layout Shift 0.060 good → no change 0.034 – 0.060 0.150 needs work 68.9% 16.2% 14.9%
TBT Total Blocking Time 5.77 s poor ↓ -448 ms (-7.2%) 4.15 s – 9.52 s n/a —
FCP First Contentful Paint 16.39 s poor ↑ +137 ms (+0.8%) 8.47 s – 17.70 s 3.47 s poor 35.3% 32.3% 32.5%
Speed Index 16.39 s poor ↓ -929 ms (-5.4%) 14.83 s – 19.76 s n/a —
TTFB Time to First Byte 670 ms good ↓ -25 ms (-3.6%) 643 ms – 709 ms 1.69 s needs work 45% 32.5% 22.5%

LCP Subparts LAB Throttled

The subparts attribute LCP to your server, resource discovery, download, or rendering. They come from one throttled load, the same one as the filmstrip, so they add up to that load’s LCP rather than the simulated Lab LCP above.

resource load delay 13.73 s
resource load duration 4.47 s
time to first byte 1.20 s
element render delay 11 ms

LCP LAB Simulated vs LCP FIELD

Lab 28.26 s
Field p75 4.47 s

The lab LCP is 6.32× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 8.31 MB ↑ +106.8 kB (+1.3%) 7.43 MB – 8.67 MB
Requests 300 ↑ +3 (+1%) 247 – 339
Third-party Weight 4.49 MB ↑ +60.2 kB (+1.4%) 3.87 MB – 4.69 MB
Third-party CPU 1.78 s ↑ +98 ms (+5.8%) 1.08 s – 2.31 s
Unused JS 1.55 MB ↑ +1.6 kB (+0.1%) 1.45 MB – 1.67 MB
Unused CSS 1.82 MB ↑ +1.8 kB (+0.1%) 1.76 MB – 1.82 MB

By resource type

Type Transfer Share Size Requests
script 81% 6.73 MB 153
font 6% 501 kB 8
other 5.7% 475 kB 98
stylesheet 4% 335 kB 8
image 2.7% 223 kB 24
document 0.6% 45.8 kB 6
Total 8.31 MB 300

Third parties 27 entities

Entity Transfer Size Main thread Simulated
IBM Digital Analytics script 3.08 MB 1.26 s
Fastly 394 kB 0 ms
TrustArc 226 kB 34 ms
Adobe Tag Manager 170 kB 61 ms
Google Tag Manager 167 kB 118 ms
All 27 4.49 MB 1.78 s

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

Scripts disabled
As rendered

26.7% of pixels differ — parts of the page change. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric Value Change / range Trend
Main Thread Work 35.80 s ↑ +4333 ms (+13.8%) 21.85 s – 45.04 s
Long Tasks 20 → no change 20 – 20
DOM Elements 2,916 ↑ +1 2,798 – 2,916
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 96 → no change 87 – 96
A11y Failures 8 → no change 7 – 9
A11y Failing Nodes 20 → no change 11 – 20

Main thread work

Task Time Share Duration Simulated
script evaluation 34% 12.15 s
other 26% 9.13 s
style layout 24% 8.64 s
script parse compile 8% 2.94 s
paint composite render 6% 2.05 s
garbage collection 2% 577 ms
parse HTML 1% 319 ms
Total 35.80 s

Axe violations axe-core 4.13.0, full rule set

96 violating nodes across 10 rules, 1652 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 75 nodes
    Offending elements (5 of 75)
    1. c4d-masthead-logo 
      <c4d-masthead-logo data-autoid="c4d--masthead-logo" size="" slot="brand"></c4d-masthead-logo>
    2. .cds--col-lg-6 > div:nth-child(1) 
      <div>
    3. .lead-in 
      <span class="lead-in">
    4. c4d-video-player-container-v7[hide-caption="true"] 
      <c4d-video-player-container-v7 video-id="1_g1ueiz0i" intersection-mode="" aspect-ratio="4x3" playing-mode="inline" hide-caption="true" button-position="bottom-right" href="https://mediacenter.ibm.com…
    5. .cds--col > div:nth-child(1) 
      <div> <!-- ALN semantic override (h2 → p when eyebrow exists) --> <!-- DEFAULT h2 behavior (non-ALN OR no eyebrow) --> <h5 class="expressive-heading-02 ">Recommended for you</h5> </div>
  • critical aria-required-parent — Certain ARIA roles must be contained by particular parents 11 nodes
    Offending elements (5 of 11)
    1. a[kind="primary"][target="_self"] > c4d-button-group-item 
      <c4d-button-group-item target="_self" kind="primary" cta-type="local" data-aem-autoid="aem--leadspace_cta-0" data-video-modal-typ...="media-center" href="https://www.ibm.com/..." data-autoid="c4d--bu…
    2. a[kind="tertiary"][target="_self"] > c4d-button-group-item 
      <c4d-button-group-item target="_self" kind="tertiary" cta-type="local" data-aem-autoid="aem--leadspace_cta-1" data-video-modal-typ...="media-center" href="https://www.ibm.com/..." data-autoid="c4d--b…
    3. c4d-link-list-item-cta 
      <c4d-link-list-item-cta cta-type="local" icon-placement="right" role="listitem" target="_self" data-video-modal-type="media-center" href="https://www.ibm.com/products/offers-and-discounts?lnk=hpfp11u…
    4. c4d-footer-nav-group[title-text="Discover"] 
      <c4d-footer-nav-group title-text="Discover" role="listitem" data-autoid="c4d--footer-nav-group">
    5. c4d-footer-nav-group[title-text="Follow"] 
      <c4d-footer-nav-group title-text="Follow" role="listitem" data-autoid="c4d--footer-nav-group">
  • moderate heading-order — Heading levels should only increase by one 3 nodes
    Offending elements
    1. .expressive-heading-02 
      <h5 class="expressive-heading-02 ">Recommended for you</h5>
    2. .cmp-spotlight-carousel__heading 
      <h5 class="cmp-spotlight-carousel__heading"> Cybersecurity Month spotlight </h5>
    3. c4d-cta-block-item:nth-child(1) > c4d-content-item-heading 
      <c4d-content-item-heading role="heading" aria-level="4" data-autoid="c4d--content-item__heading" slot="heading"> Professional training </c4d-content-item-heading>
  • serious aria-hidden-focus — ARIA hidden element must not be focusable or contain focusable elements 1 node
    Offending element
    1. c4d-promo-banner .banner-content 
      <div class="banner-content" part="content" aria-hidden="true"> <slot></slot> </div>
  • critical aria-required-children — Certain ARIA roles must contain particular children 1 node
    Offending element
    1. c4d-button-group 
      <c4d-button-group class="leadspace-expanded__action leadspace-expanded__action--button-group" data-autoid="c4d--button-group" role="list" style="--c4d--button-group--item-count: 3;">
  • moderate landmark-banner-is-top-level — Banner landmark should not be contained in another landmark 1 node
    Offending element
    1. #truste-consent-track 
      <div id="truste-consent-track" class="tc-track tc-hide ta-show ta-display-block" role="banner">
  • moderate landmark-no-duplicate-banner — Document should not have more than one banner landmark 1 node
    Offending element
    1. #consent_blackbar 
      <div id="consent_blackbar" role="banner" aria-label="consent_blackbar" lang="en">
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en" style="--c4d-sticky-header-height: 49px;">
  • serious link-in-text-block — Links must be distinguishable without relying on color 1 node
    Offending element
    1. a[href="javascript:void(0)"] 
      <a href="javascript:void(0)" onclick="truste.eu.clickListener()">cookie&nbsp;preferences</a>
  • serious list — <ul> and <ol> must only directly contain <li>, <script> or <template> elements 1 node
    Offending element
    1. c4d-link-list[type="vertical"] .c4d--link-list__list--vertical 
      <ul part="list" name="list" class=" c4d--link-list__list--vertical "> <slot></slot> </ul>

Accessibility failures 8 of 32 audits

  • aria-required-parent — `[role]`s are not contained by their required parent element 11 nodes
  • heading-order — Heading elements are not in a sequentially-descending order 3 nodes
  • aria-hidden-focus — `[aria-hidden="true"]` elements contain focusable descendents 1 node
  • aria-required-children — Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. 1 node
  • link-in-text-block — Links rely on color to be distinguishable. 1 node
  • list — Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). 1 node
  • target-size — Touch targets do not have sufficient size or spacing. 1 node
  • landmark-one-main — Document does not have a main landmark. 1 node

Best Practices failures 4 of 19 audits

  • third-party-cookies — Uses third-party cookies 32 items
  • errors-in-console — Browser errors were logged to the console 8 items
  • inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item
  • valid-source-maps — Missing source maps for large first-party JavaScript 17 items

SEO failures 1 of 10 audits

  • crawlable-anchors — Links are not crawlable 2 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 8 console errors

Measurement log

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-10-03 4.51 s 378 ms 0.150 3.61 s 1.75 s
2026-09-26 4.61 s 371 ms 0.150 4.01 s 1.97 s
2026-09-19 4.72 s 364 ms 0.150 4.42 s 2.31 s
2026-09-12 4.85 s 352 ms 0.150 4.77 s 2.85 s
2026-09-05 4.89 s 337 ms 0.150 4.78 s 2.91 s
2026-08-29 4.93 s 323 ms 0.150 4.72 s 2.82 s
2026-08-22 4.95 s 311 ms 0.150 4.72 s 2.80 s
2026-08-15 4.89 s 299 ms 0.150 4.58 s 2.55 s
2026-08-08 4.97 s 295 ms 0.140 4.44 s 2.37 s
2026-08-01 5.09 s 291 ms 0.140 4.33 s 2.21 s
2026-07-25 5.05 s 283 ms 0.140 4.09 s 1.96 s
2026-07-18 5.13 s 287 ms 0.140 4.06 s 1.90 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 9, 2026, 3:07 AM UTC 25 28.26 s 0.060 5.77 s 8.31 MB 3/3 ±6 2,579 +4% 441.2s Wayback
Oct 7, 2026, 2:07 AM UTC 25 28.07 s 0.060 6.21 s 8.20 MB 3/3 ±0 2,381 -4% 437s Wayback
Oct 6, 2026, 7:17 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 247.5s
Oct 3, 2026, 8:50 PM UTC 25 30.13 s 0.037 5.77 s 8.31 MB 3/3 ±0 2,747 +10% 428.9s Wayback
Oct 1, 2026, 12:23 AM UTC 25 28.81 s 0.060 5.66 s 8.17 MB 3/3 ±9 2,419 -3% 445.4s Wayback
Sep 29, 2026, 12:06 AM UTC 25 28.74 s 0.040 6.91 s 8.16 MB 3/3 ±1 2,480 0% 433.3s Wayback
Sep 25, 2026, 4:40 PM UTC 25 28.59 s 0.041 7.73 s 8.24 MB 3/3 ±4 2,510 +1% 435.9s Wayback
Sep 23, 2026, 3:19 PM UTC 25 30.25 s 0.035 5.86 s 8.62 MB 3/3 ±2 3,217 +29% 416.4s Wayback
Sep 21, 2026, 3:02 PM UTC 25 24.58 s 0.034 4.15 s 8.62 MB 3/3 ±2 3,570 +44% 419.5s Wayback
Sep 19, 2026, 8:35 AM UTC 25 28.04 s 0.039 6.43 s 8.67 MB 3/3 ±0 2,462 -1% 444.7s Wayback
Sep 17, 2026, 5:46 AM UTC 25 25.75 s 0.038 7.73 s 8.59 MB 3/3 ±0 2,487 0% 449.8s Wayback
Sep 15, 2026, 12:22 AM UTC 25 26.26 s 0.059 9.52 s 8.61 MB 3/3 ±0 2,484 0% 443.8s Wayback
Sep 14, 2026, 6:05 PM UTC NO_FCP: The page did not paint any content. Please ensure you keep the browser window in the foreground during the load and try again. (NO_FCP) 144.7s
Sep 12, 2026, 7:11 AM UTC 25 23.70 s 0.038 9.40 s 8.29 MB 3/3 ±0 2,469 -1% 459.1s Wayback
Sep 10, 2026, 5:51 AM UTC 25 21.71 s 0.039 7.42 s 7.77 MB 3/3 ±0 2,455 -1% 359.9s Wayback
Sep 8, 2026, 1:08 AM UTC 25 25.20 s 0.058 6.19 s 7.91 MB 3/3 ±1 2,443 -2% 366.3s Wayback
Sep 6, 2026, 12:49 AM UTC 25 21.42 s 0.036 4.54 s 7.83 MB 3/3 ±2 3,278 +32% 349.2s Wayback
Sep 4, 2026, 9:15 PM UTC 25 21.30 s 0.036 5.94 s 7.43 MB 3/3 ±2 2,485 0% 355s Wayback
Sep 3, 2026, 12:06 PM UTC 25 27.16 s 0.034 4.66 s 8.18 MB 3/3 ±0 3,187 +28% 349.3s Wayback
Sep 3, 2026, 1:16 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 187.7s
Sep 1, 2026, 11:15 PM UTC 25 21.83 s 0.037 7.14 s 7.79 MB 3/3 ±0 2,430 -2% 356.3s Wayback
Aug 31, 2026, 9:31 PM UTC 25 25.43 s 0.039 6.47 s 7.87 MB 3/3 ±0 2,463 -1% 357.2s Wayback
Aug 28, 2026, 5:36 PM UTC 25 21.76 s 0.038 7.72 s 8.24 MB 3/3 ±0 2,373 -5% 352.7s Wayback