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

rs-rss.com

https://rs-rss.com/

99PERF 100A11Y 100BEST 100SEO ✓AXE –CWV

Ranks Overall #240 Built Awesome #188

Data from Oct 5, 2026, 11:57 PM UTC old Measured once a week · 8 runs since Aug 21, 2026

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

Moved from https://www.rs-rss.com/.

History from the previous URL is included below, with the move on Sep 7, 2026. A step-change around that point is likely the change of address rather than a regression.

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 4,052, 63% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

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

Stack

Eleventy 3.1.6 Built with Eleventy 3.1.6
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

99
Performance
↑ +4 (+4.2%)
100
Accessibility
no change
100
Best Practices
↑ +4 (+4.2%)
100
SEO
no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 1.60 s good ↓ -1108 ms (-41%) significant 1.55 s – 2.70 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.60 s good ↓ -114 ms (-6.7%) 1.55 s – 2.55 s
Speed Index 1.60 s good ↓ -1049 ms (-39.7%) significant 1.55 s – 2.65 s
TTFB Time to First Byte 672 ms good ↑ +52 ms (+8.4%) 491 ms – 691 ms

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.

element render delay 132 ms
time to first byte 58 ms

Page weight

Metric Value Change / range Trend
Page Weight 252 kB ↓ -8.1 kB (-3.2%) 252 kB – 329 kB
Requests 25 ↑ +2 (+8.7%) 20 – 27
Third-party Weight 10.2 kB → no change 9.6 kB – 11.5 kB
Third-party CPU 4 ms ↓ -1 ms (-20%) significant 3 ms – 5 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
image 81.9% 202 kB 16
other 6% 14.8 kB 4
script 4.6% 11.4 kB 2
document 4.6% 11.4 kB 1
stylesheet 2.9% 7.0 kB 1
Total 252 kB 25

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Cloudflare script 10.2 kB 4 ms
Total 10.2 kB 4 ms

Page health

Metric Value Change / range Trend
Main Thread Work 250 ms ↓ -87 ms (-25.9%) significant 250 ms – 357 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 656 → no change 656 – 656
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 1
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 52% 129 ms
style layout 19% 47 ms
script evaluation 16% 39 ms
paint composite render 8% 21 ms
parse HTML 5% 13 ms
script parse compile 0% 1 ms
Total 250 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 1285 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 5, 2026, 11:57 PM UTC 99 1.60 s 0 0 ms 252 kB 3/3 ±2 4,052 +63% 24s Wayback
Sep 28, 2026, 11:43 PM UTC 95 2.70 s 0 0 ms 260 kB 3/3 ±24 2,499 +1% 36.7s Wayback
Sep 21, 2026, 7:52 PM UTC 99 1.63 s 0 0 ms 316 kB 3/3 ±3 2,498 0% 29.9s Wayback
Sep 14, 2026, 5:46 PM UTC 99 1.61 s 0 0 ms 297 kB 3/3 ±10 2,490 0% 32.4s Wayback
Sep 7, 2026, 2:54 PM UTC 99 1.55 s 0 0 ms 252 kB 3/3 ±3 2,092 -16% 29.9s Wayback
Sep 7, 2026, 9:05 AM UTC old URL 95 2.35 s 0 0 ms 266 kB 3/3 ±8 2,362 -5% 28s Wayback
Aug 31, 2026, 4:00 AM UTC old URL 94 2.52 s 0 0 ms 303 kB 3/3 ±16 2,476 0% 27.9s Wayback
Aug 21, 2026, 2:35 PM UTC old URL 93 2.55 s 0 0 ms 329 kB 3/3 ±3 2,313 -7% 30.2s Wayback

Embed this score

Use this web component to show rs-rss.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://rs-rss.com/"></speedlify2-score>