speedlify2

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

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

sourcetarget.email

https://sourcetarget.email/

99 96 100 100 –CWV 9AXE

Data from Aug 21, 2026, 6:52 AM UTC — 12h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 12h

Stack

Detected on the same page load as the accessibility pass — the generator from <meta name="generator"> or the shape of the page, the host from response headers.

Eleventy Built with Eleventy
Cloudflare Hosted by Cloudflare

Scores

99
Performance
no change
96
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 2.20 s — — 2.20 s 2.20 s
CLS Cumulative Layout Shift 0.011 — — 0.011 0.011
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 1.21 s — — 1.21 s 1.21 s
Speed Index 1.21 s — — 1.21 s 1.21 s
TTFB Time to First Byte 613 ms — — 613 ms 613 ms

What LCP is made of

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

element render delay 567 ms
time to first byte 32 ms
resource load duration 28 ms
resource load delay 9 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 1.24 MB — — 1.24 MB 1.24 MB
Requests 31 — — 31 31
Third-party Weight 1.14 MB — — 1.14 MB 1.14 MB
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

image 1.14 MB · 12 req
font 74.0 kB · 3 req
document 10.6 kB · 1 req
other 7.6 kB · 13 req
third party 1.14 MB · 12 req

Third parties 1 entities

1.14 MB transferred, 0 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Cloudinary 1.14 MB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 359 ms — — 359 ms 359 ms
Long Tasks 0 — — 0 0
DOM Elements 113 — — 113 113
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 9 — — 9 9
A11y Failures 1 — — 1 1
A11y Failing Nodes 1 — — 1 1

Main thread work

other 201 ms
style layout 85 ms
script evaluation 30 ms
paint composite render 28 ms
parse HTML 13 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

9 violating nodes across 3 rules, 266 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

  • minor image-redundant-alt — Alternative text of images should not be repeated as text 7 nodes
  • serious link-name — Links must have discernible text 1 node
  • serious scrollable-region-focusable — Scrollable region must have keyboard access 1 node

Accessibility failures 1 of 27 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

  • link-name — Links do not have a discernible name 1 node

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 21, 2026, 6:52 AM UTC 99 2.20 s 0.011 0 ms 1.24 MB 3/3 ±1 2,471 21.2s

Embed this score

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

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://sourcetarget.email/"></speedlify-score>