speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time — measured continuously.

Measurement runs · Embed a score ·

remix.run

https://remix.run/

61 100 100 100 –AXE ✗CWV

Data from Aug 23, 2026, 8:28 AM UTC 13h old

Site Generators #18 · 3 measurements · since Aug 21, 2026

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-25 → 2026-08-21). This is what Google measures you on.

LCP 1.86 s good
INP 339 ms needs-improvement
CLS 0.010 good

Scores

61
Performance
↓ -1 (-1.6%)
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Filmstrip Lighthouse, mobile

How the page drew during the measured load, at 8 points across 44.51 s.

  1. 5.56 s
  2. 11.13 s
  3. 16.69 s
  4. 22.25 s
  5. 27.82 s
  6. 33.38 s
  7. 38.95 s
  8. 44.51 s

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.80 s 1.39 s ↑ +406 ms (+29.1%) 1.39 s 1.80 s
CLS Cumulative Layout Shift 0.002 0.002 → no change 0.002 0.002
TBT Total Blocking Time 170.10 s 172.13 s ↓ -2029 ms (-1.2%) 170.10 s 172.13 s
FCP First Contentful Paint 1.80 s 1.35 s ↑ +447 ms (+33%) 1.35 s 1.80 s
Speed Index 7.90 s 7.55 s ↑ +350 ms (+4.6%) 7.53 s 7.90 s
TTFB Time to First Byte 600 ms 644 ms ↓ -44 ms (-6.8%) significant 600 ms 652 ms

What LCP is made of observed, unthrottled

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

Measured on the trace before throttling is modelled, so these are real durations that will not sum to the 1.80 s above — that figure is a simulation of the same load on a slow phone and connection. Read these for the proportions: which phase dominates.

element render delay 216 ms
time to first byte 6 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-25 → 2026-08-21). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 1.86 s good 86% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 339 ms needs-improvement 54% good
CLS CWV 0.010 good 99.6% good
FCP 1.89 s needs-improvement 72.5% good
TTFB 1.03 s needs-improvement 68.4% good

Lab vs field

Lab LCP 1.80 s · field p75 1.86 s · real users are 1.03× slower than the lab.

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-08-15 1.85 s 317 ms 0.010 1.88 s 1.02 s
2026-08-08 1.83 s 317 ms 0.010 1.86 s 1.00 s
2026-08-01 1.74 s 315 ms 0.010 1.81 s 947 ms
2026-07-25 1.70 s 335 ms 0.010 1.77 s 932 ms
2026-07-18 1.64 s 356 ms 0.010 1.70 s 891 ms
2026-07-11 1.65 s 362 ms 0.010 1.72 s 880 ms
2026-07-04 1.72 s 367 ms 0.010 1.75 s 873 ms
2026-06-27 1.69 s 356 ms 0.010 1.71 s 829 ms
2026-06-20 1.66 s 321 ms 0 1.69 s 821 ms
2026-06-13 1.61 s 293 ms 0 1.66 s 821 ms
2026-06-06 1.51 s 280 ms 0 1.56 s 757 ms
2026-05-30 1.47 s 300 ms 0 1.50 s 723 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 1.10 MB 1.10 MB ↑ +78 B 1.10 MB 1.10 MB
Requests 142 142 → no change 142 142
Third-party Weight 3.2 kB 3.2 kB → no change 3.2 kB 3.2 kB
Third-party CPU 3 ms 2 ms ↑ +0 ms (+19%) significant 2 ms 3 ms
Unused JS 82.5 kB 82.5 kB → no change 82.5 kB 82.5 kB
Unused CSS 0 B 0 B → no change 0 B 0 B

By resource type

other 601 kB · 3 req
script 320 kB · 124 req
font 125 kB · 2 req
image 30.6 kB · 8 req
stylesheet 14.3 kB · 4 req
document 10.9 kB · 1 req
third party 3.2 kB · 2 req

Third parties 1 entities

3.2 kB transferred, 3 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Fathom Analytics 3.2 kB · 3 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 180.09 s 181.81 s ↓ -1715 ms (-0.9%) 180.09 s 181.81 s
Long Tasks 20 20 → no change 20 20
DOM Elements 368 368 → no change 368 368
A11y Failures 0 0 → no change 0 0
A11y Failing Nodes 0 0 → no change 0 0

Main thread work

other 176.35 s
script evaluation 1.92 s
style layout 1.51 s
paint composite render 222 ms
parse HTML 48 ms
script parse compile 24 ms
garbage collection 8 ms

Axe violations axe-core , full rule set

The axe run failed: Navigation timeout of 120000 ms exceeded

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 23, 2026, 8:28 AM UTC 61 1.80 s 0.002 170.10 s 1.10 MB 3/3 ±16 2,486 467.1s
Aug 22, 2026, 8:28 AM UTC 62 1.39 s 0.002 172.13 s 1.10 MB 3/3 ±17 2,469 469s
Aug 21, 2026, 7:41 AM UTC 62 1.65 s 0.002 171.94 s 1.10 MB 3/3 ±30 2,818 446.1s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show remix.run's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://remix.run/"></speedlify2-score>