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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.

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heyflow.com

https://heyflow.com/

46PERF 93A11Y 77BEST 69SEO !AXE !CWV

Ranks Overall #1,694 Built Awesome #1,090

Data from Oct 3, 2026, 11:37 PM UTC old Measured once a week · 7 runs since Aug 20, 2026

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

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

Stack

Eleventy 3.1.2 Built with Eleventy 3.1.2
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

46
Performance
↓ -2 (-4.2%)
93
Accessibility
no change
77
Best Practices
no change
69
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 (2026-09-04 → 2026-10-01), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 20.11 s poor ↑ +14345 ms (+249%) 5.76 s – 21.94 s 2.49 s good 75.4% 8.3% 16.4%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 450 ms needs work 48.6% 30.6% 20.9%
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0.030 0.020 good 98.6% 0.8% 0.6%
TBT Total Blocking Time 1.68 s poor ↑ +37 ms (+2.3%) 1.35 s – 1.94 s n/a —
FCP First Contentful Paint 1.33 s good ↓ -9 ms (-0.7%) 1.10 s – 1.34 s 2.02 s needs work 70.7% 11.5% 17.9%
Speed Index 4.34 s needs work ↓ -747 ms (-14.7%) 4.34 s – 7.73 s n/a —
TTFB Time to First Byte 645 ms good ↑ +31 ms (+5%) 614 ms – 645 ms 1.34 s needs work 64.3% 15.6% 20.1%

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

resource load delay 995 ms
element render delay 496 ms
time to first byte 121 ms

LCP LAB Simulated vs LCP FIELD

Lab 20.11 s
Field p75 2.49 s

The lab LCP is 8.06× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 8.89 MB ↓ -659.9 kB (-7.1%) 8.01 MB – 15.51 MB
Requests 158 ↑ +2 (+1.3%) 156 – 201
Third-party Weight 3.65 MB ↑ +19.7 kB (+0.6%) 3.61 MB – 6.94 MB
Third-party CPU 406 ms ↓ -29 ms (-6.7%) 369 ms – 565 ms
Unused JS 719 kB ↑ +8.8 kB (+1.3%) 574 kB – 732 kB
Unused CSS 18.1 kB ↑ +68 B (+0.4%) 18.1 kB – 19.3 kB

By resource type

Type Transfer Share Size Requests
image 40% 3.55 MB 80
media 38.5% 3.42 MB 1
script 20% 1.78 MB 40
font 0.8% 67.2 kB 2
document 0.6% 50.9 kB 4
other 0.2% 18.9 kB 30
Total 8.89 MB 158

Third parties 14 entities

Entity Transfer Size Main thread Simulated
Cloudinary image 2.58 MB 0 ms
Google Tag Manager 337 kB 49 ms
Facebook 296 kB 154 ms
Hubspot 131 kB 85 ms
Usercentrics CMP 94.0 kB 14 ms
All 14 3.65 MB 406 ms

Page health

Metric Value Change / range Trend
Main Thread Work 10.57 s ↓ -1667 ms (-13.6%) 10.57 s – 13.48 s
Long Tasks 20 → no change 20 – 20
DOM Elements 1,365 ↑ +94 (+7.4%) significant 1,005 – 1,365
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 → no change 1 – 2
A11y Failures 3 → no change 3 – 3
A11y Failing Nodes 10 ↑ +1 (+11.1%) 9 – 10

Main thread work

Task Time Share Duration Simulated
script evaluation 36% 3.75 s
other 25% 2.60 s
style layout 22% 2.31 s
paint composite render 10% 1.05 s
script parse compile 6% 640 ms
garbage collection 1% 145 ms
parse HTML 1% 70 ms
Total 10.57 s

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 1716 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 3 of 29 audits

  • target-size — Touch targets do not have sufficient size or spacing. 8 nodes
  • list — Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). 1 node
  • svg-img-alt — SVG elements with an `img` role do not have an accessible text alternative 1 node

Best Practices failures 3 of 20 audits

  • third-party-cookies — Uses third-party cookies 17 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 7 items

SEO failures 1 of 10 audits

  • is-crawlable — Page is blocked from indexing 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 2.89 s 448 ms 0.020 2.16 s 1.53 s
2026-09-19 4.18 s 441 ms 0.030 3.24 s 2.33 s
2026-09-12 3.70 s 415 ms 0.020 2.86 s 2.11 s
2026-09-05 3.17 s 432 ms 0.020 2.32 s 1.66 s
2026-08-29 2.87 s 462 ms 0.020 2.12 s 1.36 s
2026-08-22 2.26 s 493 ms 0.020 1.74 s 872 ms
2026-08-15 2.35 s 555 ms 0.020 1.80 s 862 ms
2026-08-08 2.60 s 495 ms 0.020 1.87 s 924 ms
2026-08-01 2.48 s 441 ms 0.020 1.76 s 907 ms
2026-07-25 2.27 s 467 ms 0.020 1.73 s 880 ms
2026-07-18 2.77 s 473 ms 0.030 2.13 s 1.38 s
2026-07-11 2.37 s 548 ms 0.030 2.14 s 1.35 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 3, 2026, 11:37 PM UTC 46 20.11 s 0 1.68 s 8.89 MB 3/3 ±7 2,467 -1% 73.7s Wayback
Sep 26, 2026, 9:56 PM UTC 48 5.76 s 0 1.64 s 9.57 MB 3/3 ±9 2,388 -4% 65.8s Wayback
Sep 19, 2026, 7:16 PM UTC 45 20.75 s 0 1.71 s 8.01 MB 3/3 ±5 2,490 0% 74.4s Wayback
Sep 12, 2026, 6:12 PM UTC 42 8.72 s 0 1.83 s 11.44 MB 3/3 ±2 2,476 0% 135.9s Wayback
Sep 5, 2026, 3:54 PM UTC 40 21.94 s 0.028 1.94 s 12.65 MB 3/3 ±7 2,511 +1% 118.5s Wayback
Aug 29, 2026, 12:29 PM UTC 43 11.64 s 0 1.35 s 15.51 MB 3/3 ±3 2,389 -4% 120.2s Wayback
Aug 20, 2026, 11:25 PM UTC 42 20.63 s 0.030 1.57 s 12.41 MB 3/3 ±7 2,482 0% 65.2s Wayback

Embed this score

Use this web component to show heyflow.com's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site!

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://heyflow.com/"></speedlify2-score>