rubygems.org
Ranks Overall #1,453 Developer Tooling #51 Package Managers #9
Data from Oct 16, 2026, 7:20 PM UTC old Measured every 2 days · 24 runs since Aug 25, 2026
Elsewhere:
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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
Ru
Hosted by
RubyGems.org
Filmstrip LAB Throttled
How the page drew during the measured load, at 8 points across 5.22 s. Compare this filmstrip against another site.
-
652 ms
-
1.30 s
-
1.96 s
-
2.61 s
-
3.26 s
-
3.91 s
-
4.24 s
-
5.22 s
Lighthouse Scores LAB Simulated
72
Performance
↓ -18 (-20%)
92
Accessibility
no change
100
Best Practices
no change
91
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 | 4.68 s poor | ↑ +1753 ms (+59.8%) significant 2.93 s – 4.69 s | 1.53 s good | 87.9% 6.6% 5.5% | |
| INP CWV Interaction to Next Paint — field only, no lab run can measure it | n/a | — | 95 ms good | 94.1% 4.9% 1% | |
| CLS CWV Cumulative Layout Shift | 0.028 good | → no change 0.026 – 0.028 | 0 good | 98.4% 0.9% 0.7% | |
| TBT Total Blocking Time | 0 ms good | → no change 0 ms – 0 ms | n/a | — | |
| FCP First Contentful Paint | 4.37 s poor | ↑ +1442 ms (+49.2%) significant 2.93 s – 4.39 s | 1.55 s good | 79.8% 13.2% 7% | |
| Speed Index | 4.37 s needs work | ↑ +1442 ms (+49.2%) significant 2.93 s – 4.39 s | n/a | — | |
| TTFB Time to First Byte | 633 ms good | ↓ -46 ms (-6.8%) significant 617 ms – 679 ms | 977 ms needs work | 70.3% 22.9% 6.8% | |
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
3.67 s
time to first byte
570 ms
LCP LAB Simulated vs LCP FIELD
Lab
4.68 s
Field p75
1.53 s
The lab LCP is 3.05× the field p75 — real users likely have above-average hardware or network connectivity.
Page weight
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Page Weight | 612 kB | ↑ +3.7 kB (+0.6%) 597 kB – 612 kB | |
| Requests | 47 | ↑ +1 (+2.2%) 45 – 47 | |
| Third-party Weight | 37.4 kB | ↑ +348 B (+0.9%) 37.0 kB – 37.4 kB | |
| Third-party CPU | 0 ms | → no change 0 ms – 0 ms | |
| Unused JS | 188 kB | → no change 188 kB – 188 kB | |
| Unused CSS | 0 B | → no change 0 B – 0 B |
By resource type
| Type | Transfer | Share | Size | Requests |
|---|---|---|---|---|
| script | 57.7% | 335 kB | 38 | |
| stylesheet | 23.5% | 136 kB | 3 | |
| other | 11.1% | 64.5 kB | 1 | |
| font | 6.3% | 36.3 kB | 3 | |
| document | 1.4% | 8.1 kB | 1 | |
| Total | 612 kB | 47 |
Third parties 1 entities
| Entity | Transfer | Size | Main thread Simulated |
|---|---|---|---|
| Google Fonts | 37.4 kB | 0 ms | |
| Total | 37.4 kB | 0 ms |
Without JavaScript
The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.
0% of pixels differ — they are 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 | 1.20 s | ↑ +511 ms (+74.3%) significant 475 ms – 1.20 s | |
| Long Tasks | 5 | ↑ +4 (+400%) significant 1 – 5 | |
| DOM Elements | 186 | ↑ +1 (+0.5%) 183 – 199 | |
| Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) | 14 | → no change 14 – 17 | |
| A11y Failures | 2 | → no change 2 – 3 | |
| A11y Failing Nodes | 14 | → no change 14 – 16 |
Main thread work
| Task | Time | Share | Duration Simulated |
|---|---|---|---|
| other | 43% | 521 ms | |
| style layout | 24% | 290 ms | |
| script evaluation | 15% | 183 ms | |
| parse HTML | 12% | 141 ms | |
| paint composite render | 3% | 39 ms | |
| garbage collection | 1% | 16 ms | |
| script parse compile | 1% | 9 ms | |
| Total | 1.20 s |
Axe violations axe-core 4.13.0, full rule set
14 violating nodes across 2 rules, 262 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.
-
serious
link-name— Links must have discernible text 9 nodesOffending elements (5 of 9)
-
.space-x-4 > a:nth-child(1)<a href="https://github.com/rubygems/rubygems.org"> <svg class="h-6 w-6 flex-shrink-0 stroke-current stroke-0 fill-current " height="24" width="24" aria-hidden="true" role="graphics-symbol"><use href… -
.space-x-4 > a:nth-child(2)<a href="https://ruby.social/users/rubygems"> <svg class="h-6 w-6 flex-shrink-0 stroke-current stroke-0 fill-current " height="24" width="24" aria-hidden="true" role="graphics-symbol"><use href="/ass… -
.p-1[href$="rubycentral.org/"]<a href="https://rubycentral.org/" class="p-1"><svg class="h-15 w-15 flex-shrink-0 stroke-current stroke-0 fill-current " height="60" width="60" aria-hidden="true" role="graphics-symbol"><use href="/… -
a[href$="aws.amazon.com/"]<a href="https://aws.amazon.com/" class="p-1"><svg class="h-15 w-15 flex-shrink-0 stroke-current stroke-0 fill-current " height="60" width="60" aria-hidden="true" role="graphics-symbol"><use href="/a… -
.p-1:nth-child(3)<a href="https://dnsimple.link/resolving-rubygems" class="p-1"><svg class="h-15 w-15 flex-shrink-0 stroke-current stroke-0 fill-current " height="60" width="60" aria-hidden="true" role="graphics-symb…
-
-
serious
color-contrast— Elements must meet minimum color contrast ratio thresholds 5 nodesOffending elements
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.text-orange-500 > .text-\[2\.5rem\].sm\:text-\[3\.5rem\].lg\:text-\[5rem\]<span class="text-[2.5rem] sm:text-[3.5rem] lg:text-[5rem]">RubyGems</span> -
a[href$="download"] > span<span>Install RubyGems</span> -
.max-w-4xl > a[href$="rubycentral.org/"]<a href="https://rubycentral.org/">contributing here</a> -
a[href$="supporters"] > span<span>See our sponsors</span> -
.bg-\[\#FFE2D3\].p-8.dark\:bg-orange-900 > .min-h-14.gap-2.text-white > span<span>Donate now</span>
-
Accessibility failures 2 of 26 audits
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link-name— Links do not have a discernible name 9 nodes -
color-contrast— Background and foreground colors do not have a sufficient contrast ratio. 5 nodes
SEO failures 1 of 8 audits
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meta-description— Document does not have a meta description
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 | LCP | INP | CLS | FCP | TTFB |
|---|---|---|---|---|---|
| 2026-10-10 | 1.27 s | 89 ms | 0 | 1.28 s | 818 ms |
| 2026-10-03 | 1.16 s | 86 ms | 0 | 1.16 s | 729 ms |
| 2026-09-26 | 1.16 s | 86 ms | 0 | 1.16 s | 728 ms |
| 2026-09-19 | 1.16 s | 88 ms | 0 | 1.16 s | 730 ms |
| 2026-09-12 | 1.24 s | 92 ms | 0 | 1.25 s | 814 ms |
| 2026-09-05 | 1.57 s | 106 ms | 0 | 1.58 s | 1.07 s |
| 2026-08-29 | 1.54 s | 109 ms | 0 | 1.58 s | 1.15 s |
| 2026-08-22 | 1.65 s | 112 ms | 0 | 1.67 s | 1.15 s |
| 2026-08-15 | 1.52 s | 112 ms | 0 | 1.54 s | 1.12 s |
| 2026-08-08 | 1.80 s | 128 ms | 0 | 1.85 s | 1.18 s |
| 2026-08-01 | 1.80 s | 144 ms | 0 | 1.85 s | 1.12 s |
| 2026-07-25 | 1.97 s | 152 ms | 0 | 2.02 s | 1.08 s |
Runs
Every stored run for this URL, newest first.
| When | Scores | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took | Archive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 16, 2026, 7:20 PM UTC | 72 | 4.68 s | 0.028 | 0 ms | 612 kB | 3/3 | ±1 | 2,442 -2% | 46.9s |
|
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| Oct 14, 2026, 4:40 PM UTC | 90 | 2.93 s | 0.028 | 0 ms | 608 kB | 3/3 | ±8 | 2,407 -3% | 48s |
|
|
| Oct 11, 2026, 4:21 AM UTC | 72 | 4.67 s | 0.028 | 0 ms | 603 kB | 3/3 | ±0 | 2,456 -1% | 45.7s |
|
|
| Oct 9, 2026, 2:57 AM UTC | 73 | 4.61 s | 0.028 | 0 ms | 603 kB | 3/3 | ±2 | 2,443 -2% | 45s |
|
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| Oct 6, 2026, 10:59 PM UTC | 77 | 4.22 s | 0.028 | 0 ms | 603 kB | 3/3 | ±8 | 3,349 +35% | 43.4s |
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|
| Oct 3, 2026, 8:43 PM UTC | 72 | 4.67 s | 0.028 | 0 ms | 603 kB | 2/3 | ±8 | 3,000 +21% | 42.9s |
|
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| Oct 1, 2026, 6:52 AM UTC | 72 | 4.69 s | 0.027 | 0 ms | 602 kB | 3/3 | ±2 | 2,439 -2% | 52s |
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| Sep 29, 2026, 4:53 AM UTC | 73 | 4.52 s | 0.028 | 0 ms | 603 kB | 3/3 | ±2 | 2,395 -4% | 47.8s |
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| Sep 25, 2026, 5:53 AM UTC | 72 | 4.67 s | 0.028 | 0 ms | 598 kB | 3/3 | ±0 | 2,482 0% | 45.3s |
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| Sep 23, 2026, 12:08 AM UTC | 72 | 4.69 s | 0.028 | 0 ms | 597 kB | 3/3 | ±8 | 2,399 -4% | 46.4s |
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| Sep 20, 2026, 11:12 PM UTC | 76 | 4.28 s | 0.026 | 0 ms | 598 kB | 3/3 | ±8 | 2,244 -10% | 45.8s |
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| Sep 18, 2026, 1:31 PM UTC | 72 | 4.67 s | 0.028 | 0 ms | 597 kB | 3/3 | ±1 | 2,405 -3% | 46.7s |
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| Sep 16, 2026, 3:55 AM UTC | 72 | 4.67 s | 0.028 | 0 ms | 597 kB | 3/3 | ±0 | 2,495 0% | 45.9s |
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| Sep 14, 2026, 1:00 AM UTC | 72 | 4.67 s | 0.028 | 0 ms | 597 kB | 3/3 | ±0 | 2,438 -2% | 46s |
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| Sep 11, 2026, 11:07 PM UTC | 72 | 4.68 s | 0.028 | 0 ms | 597 kB | 3/3 | ±1 | 2,442 -2% | 46.5s |
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| Sep 9, 2026, 8:35 PM UTC | 79 | 3.93 s | 0.027 | 0 ms | 597 kB | 3/3 | ±1 | 3,376 +36% | 22s |
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| Sep 7, 2026, 7:12 PM UTC | 76 | 4.23 s | 0.028 | 0 ms | 597 kB | 3/3 | ±8 | 2,488 0% | 23.5s |
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| Sep 5, 2026, 3:16 AM UTC | 72 | 4.69 s | 0.028 | 0 ms | 597 kB | 3/3 | ±1 | 2,292 -8% | 23.4s |
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| Sep 4, 2026, 12:55 AM UTC | 79 | 3.93 s | 0.028 | 0 ms | 599 kB | 3/3 | ±5 | 3,102 +25% | 22.6s |
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| Sep 2, 2026, 11:05 PM UTC | 79 | 3.94 s | 0.028 | 0 ms | 599 kB | 3/3 | ±4 | 2,317 -7% | 23.5s |
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| Sep 1, 2026, 8:45 PM UTC | 72 | 4.67 s | 0.026 | 0 ms | 599 kB | 3/3 | ±0 | 3,014 +21% | 21.5s |
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| Aug 31, 2026, 6:03 PM UTC | 72 | 4.68 s | 0.028 | 0 ms | 599 kB | 3/3 | ±0 | 2,336 -6% | 23.7s |
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| Aug 26, 2026, 7:03 PM UTC | 72 | 4.67 s | 0.028 | 0 ms | 599 kB | 3/3 | ±0 | 2,956 +19% | 22.1s |
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| Aug 25, 2026, 4:36 PM UTC | 72 | 4.68 s | 0.028 | 0 ms | 599 kB | 3/3 | ±1 | 2,501 +1% | 23.5s |
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