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

devin.ai

https://devin.ai/

62PERF 87A11Y 73BEST 100SEO ✗AXE ✓CWV

Ranks Overall #1,668 Developer Tooling #74 AI #6

Data from Oct 16, 2026, 3:35 PM UTC old Measured every 2 days · 21 runs since Sep 1, 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

Next.js Built with Next.js
Uses ReactReact
Vercel Hosted by Vercel

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 11.17 s. Compare this filmstrip against another site.

  1. 1.40 s
  2. 2.79 s
  3. 4.19 s
  4. 5.58 s
  5. 6.98 s
  6. 8.38 s
  7. 9.77 s
  8. 11.17 s

Lighthouse Scores LAB Simulated

62
Performance
↑ +1 (+1.6%)
87
Accessibility
no change
73
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

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

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-17 → 2026-10-14), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 3.55 s needs work ↓ -370 ms (-9.4%) 3.04 s – 5.27 s 1.69 s good 82.4% 4.8% 12.9%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 177 ms good 80.3% 16.5% 3.2%
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0.078 0 good 96.5% 3.2% 0.3%
TBT Total Blocking Time 1.76 s poor ↑ +109 ms (+6.6%) 619 ms – 2.54 s n/a —
FCP First Contentful Paint 1.82 s needs work ↑ +305 ms (+20.1%) significant 1.52 s – 2.87 s 1.27 s good 85.7% 8.4% 5.9%
Speed Index 2.47 s good ↑ +799 ms (+47.8%) significant 1.66 s – 7.45 s n/a —
TTFB Time to First Byte 625 ms good ↑ +5 ms (+0.8%) 613 ms – 3.32 s 503 ms good 86.2% 9.8% 4%

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.

element render delay 2.23 s
time to first byte 567 ms

LCP LAB Simulated vs LCP FIELD

Lab 3.55 s
Field p75 1.69 s

The lab LCP is 2.1× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 2.33 MB ↑ +56.0 kB (+2.5%) 1.74 MB – 2.50 MB
Requests 155 ↑ +6 (+4%) 60 – 155
Third-party Weight 893 kB ↓ -250 B 839 kB – 1.08 MB
Third-party CPU 571 ms ↑ +45 ms (+8.5%) 328 ms – 843 ms
Unused JS 336 kB ↓ -24.3 kB (-6.9%) significant 314 kB – 516 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 48.5% 1.13 MB 27
image 24.5% 569 kB 94
font 20.1% 467 kB 10
document 4.5% 106 kB 1
stylesheet 2% 47.5 kB 3
other 0.4% 9.8 kB 20
Total 2.33 MB 155

Third parties 10 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 547 kB 342 ms
Facebook script 220 kB 136 ms
reddit 50.4 kB 59 ms
unifyintent.com 31.1 kB 6 ms
LinkedIn Ads 22.4 kB 14 ms
All 10 893 kB 571 ms

Without JavaScript

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

Scripts disabled
As rendered

4.7% of pixels differ — they are nearly identical. 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 8.28 s ↑ +809 ms (+10.8%) 2.62 s – 10.28 s
Long Tasks 20 → no change 11 – 20
DOM Elements 2,288 ↑ +48 (+2.1%) 1,158 – 2,288
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 124 ↑ +1 (+0.8%) 1 – 130
A11y Failures 3 → no change 3 – 3
A11y Failing Nodes 131 ↑ +2 (+1.6%) 3 – 131

Main thread work

Task Time Share Duration Simulated
script evaluation 42% 3.50 s
other 30% 2.45 s
style layout 14% 1.17 s
script parse compile 6% 538 ms
paint composite render 5% 387 ms
parse HTML 2% 145 ms
garbage collection 1% 93 ms
Total 8.28 s

Axe violations axe-core 4.13.0, full rule set

124 violating nodes across 2 rules, 886 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 123 nodes
    Offending elements (5 of 123)
    1. .max-w-\[44ch\] 
      <p class="text-16 font-heading text-dt-text-secondary max-w-[44ch]">Devin runs in the cloud or on your machine, tests in its own browser, and won't stop until the PR is ready to merge</p>
    2. .overflow-x-clip.lg\:hidden.relative > .origin-top-left.top-0.left-0 > .h-\[788px\].w-\[1274px\].outline > .w-\[280px\].shadow-product-L2.rounded-xl > .min-h-0.gap-px.flex-1 > .gap-4.min-h-0.px-2 > .gap-px.flex-col.flex:nth-child(1) > .pr-1.pl-2.h-7 > .font-medium.text-text-secondary 
      <span class="font-medium text-text-secondary">Pinned</span>
    3. .overflow-x-clip.lg\:hidden.relative > .origin-top-left.top-0.left-0 > .h-\[788px\].w-\[1274px\].outline > .w-\[280px\].shadow-product-L2.rounded-xl > .min-h-0.gap-px.flex-1 > .gap-4.min-h-0.px-2 > .gap-px.flex-col.flex:nth-child(1) > .h-8.p-1.gap-1:nth-child(11) > span:nth-child(2) 
      <span>More</span>
    4. .overflow-x-clip.lg\:hidden.relative > .origin-top-left.top-0.left-0 > .h-\[788px\].w-\[1274px\].outline > .w-\[280px\].shadow-product-L2.rounded-xl > .min-h-0.gap-px.flex-1 > .gap-4.min-h-0.px-2 > .gap-px.flex-col.flex:nth-child(2) > .pr-1.pl-2.h-7 > .font-medium.text-text-secondary 
      <span class="font-medium text-text-secondary">Participated</span>
    5. .overflow-x-clip.lg\:hidden.relative > .origin-top-left.top-0.left-0 > .h-\[788px\].w-\[1274px\].outline > .w-\[280px\].shadow-product-L2.rounded-xl > .min-h-0.gap-px.flex-1 > .gap-4.min-h-0.px-2 > .gap-px.flex-col.flex:nth-child(2) > .pr-1.pl-2.h-7 > .-ml-1.text-text-disabled 
      <span class="-ml-1 text-text-disabled">12</span>
  • moderate meta-viewport — Zooming and scaling must not be disabled 1 node
    Offending element
    1. meta[name="viewport"] 
      <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">

Accessibility failures 3 of 25 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 126 nodes
  • target-size — Touch targets do not have sufficient size or spacing. 4 nodes
  • meta-viewport — `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. 1 node

Best Practices failures 3 of 19 audits

  • third-party-cookies — Uses third-party cookies 18 items
  • image-aspect-ratio — Displays images with incorrect aspect ratio 1 item
  • inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 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
2026-10-10 1.58 s 171 ms 0 1.26 s 499 ms
2026-10-03 1.42 s 160 ms 0 1.23 s 490 ms
2026-09-26 1.34 s 153 ms 0 1.23 s 482 ms
2026-09-19 1.36 s 150 ms 0 1.25 s 475 ms
2026-09-12 1.42 s 152 ms 0 1.30 s 479 ms
2026-09-05 1.83 s 159 ms 0 1.69 s 492 ms
2026-08-29 2.36 s 163 ms 0 2.19 s 506 ms
2026-08-22 2.86 s 165 ms 0 2.67 s 512 ms
2026-08-15 3.24 s 167 ms 0 3.03 s 509 ms
2026-08-08 3.27 s 166 ms 0 3.02 s 505 ms
2026-08-01 3.28 s 164 ms 0 3.03 s 506 ms
2026-07-25 3.29 s 164 ms 0 3.04 s 504 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 16, 2026, 3:35 PM UTC 62 3.55 s 0 1.76 s 2.33 MB 3/3 ±9 2,456 -1% 133.5s Wayback
Oct 14, 2026, 11:45 AM UTC 61 3.92 s 0 1.66 s 2.27 MB 3/3 ±5 2,474 -1% 130s Wayback
Oct 10, 2026, 11:42 PM UTC 58 4.24 s 0 1.72 s 2.50 MB 3/3 ±28 2,466 -1% 130.2s Wayback
Oct 8, 2026, 5:58 PM UTC 51 3.54 s 0.078 2.52 s 2.32 MB 2/3 ±13 2,375 -5% 116.7s Wayback
Oct 6, 2026, 1:07 PM UTC 50 5.27 s 0 1.39 s 2.47 MB 3/3 ±12 2,470 -1% 126.7s Wayback
Oct 1, 2026, 8:35 PM UTC 66 3.04 s 0 1.69 s 2.29 MB 3/3 ±32 2,474 -1% 133.7s Wayback
Sep 29, 2026, 6:15 PM UTC 64 3.04 s 0.061 2.54 s 2.30 MB 3/3 ±4 2,408 -3% 119s Wayback
Sep 26, 2026, 6:52 PM UTC 57 4.24 s 0 1.81 s 2.28 MB 3/3 ±24 2,462 -1% 131.5s Wayback
Sep 24, 2026, 1:15 PM UTC 62 4.37 s 0 1.04 s 1.77 MB 3/3 ±26 2,387 -4% 90.8s Wayback
Sep 22, 2026, 9:11 AM UTC 61 4.44 s 0 1.13 s 1.77 MB 2/3 ±0 2,390 -4% 75.1s Wayback
Sep 20, 2026, 5:52 AM UTC 63 4.51 s 0 913 ms 1.76 MB 3/3 ±6 2,497 0% 87.5s Wayback
Sep 18, 2026, 3:21 AM UTC 60 4.39 s 0.073 1.07 s 1.76 MB 3/3 ±31 2,279 -8% 89.6s Wayback
Sep 15, 2026, 11:25 PM UTC 62 4.23 s 0 1.13 s 1.75 MB 2/3 ±5 2,467 -1% 81.2s Wayback
Sep 13, 2026, 11:07 PM UTC 67 3.94 s 0 862 ms 1.78 MB 2/3 ±0 2,344 -6% 77.7s Wayback
Sep 11, 2026, 8:36 PM UTC 61 4.52 s 0 1.03 s 1.90 MB 2/3 ±1 2,432 -2% 231.9s Wayback
Sep 9, 2026, 8:28 PM UTC 71 3.93 s 0 619 ms 1.75 MB 2/3 ±6 3,349 +35% 38.6s Wayback
Sep 7, 2026, 7:09 PM UTC 65 4.23 s 0 841 ms 1.74 MB 2/3 ±1 2,479 0% 34.9s Wayback
Sep 5, 2026, 3:07 AM UTC 67 3.93 s 0 848 ms 1.74 MB 2/3 ±1 2,677 +8% 35.2s Wayback
Sep 3, 2026, 10:23 PM UTC 72 3.38 s 0 770 ms 1.74 MB 2/3 ±1 2,856 +15% 41.6s Wayback
Sep 2, 2026, 8:32 PM UTC 63 4.08 s 0 1.05 s 2.05 MB 2/3 ±0 2,467 -1% 40.2s Wayback
Sep 1, 2026, 5:39 PM UTC 65 4.38 s 0 834 ms 1.88 MB 3/3 ±2 2,357 -5% 44.6s Wayback