ruby-style-guide.shopify.dev
https://ruby-style-guide.shopify.dev/
Ranks Overall #1,349 11ty Emeritus
Data from Sep 20, 2026, 10:48 AM UTC old Measured once a month · 5 runs since Aug 21, 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
Lighthouse Scores LAB Simulated
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 | 902 ms good | ↓ -3 ms (-0.3%) 902 ms – 912 ms | |
| 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 | 902 ms good | ↓ -3 ms (-0.3%) 902 ms – 912 ms | |
| Speed Index | 902 ms good | ↓ -3 ms (-0.3%) 902 ms – 912 ms | |
| TTFB Time to First Byte | 602 ms good | ↓ -3 ms (-0.5%) 602 ms – 612 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.
Page weight
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Page Weight | 15.2 kB | ↓ -27 B (-0.2%) 15.2 kB – 15.3 kB | |
| Requests | 2 | → no change 2 – 2 | |
| Third-party Weight | 0 B | → no change 0 B – 0 B | |
| Third-party CPU | 0 ms | → no change 0 ms – 0 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 |
|---|---|---|---|---|
| document | 88.2% | 13.4 kB | 1 | |
| stylesheet | 11.8% | 1.8 kB | 1 | |
| Total | 15.2 kB | 2 |
Page health
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Main Thread Work | 230 ms | → no change 171 ms – 230 ms | |
| Long Tasks | 0 | → no change 0 – 1 | |
| DOM Elements | 2,368 | → no change 2,368 – 2,368 | |
| Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) | 185 | → no change 184 – 185 | |
| A11y Failures | 4 | → no change 4 – 4 | |
| A11y Failing Nodes | 139 | → no change 139 – 139 |
Main thread work
| Task | Time | Share | Duration Simulated |
|---|---|---|---|
| style layout | 49% | 113 ms | |
| other | 31% | 71 ms | |
| parse HTML | 8% | 19 ms | |
| paint composite render | 8% | 18 ms | |
| script evaluation | 3% | 8 ms | |
| script parse compile | 0% | 1 ms | |
| Total | 230 ms |
Axe violations axe-core 4.13.0, full rule set
185 violating nodes across 6 rules, 3716 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 130 nodes -
serious
scrollable-region-focusable— Scrollable region must have keyboard access 45 nodes -
serious
link-in-text-block— Links must be distinguishable without relying on color 7 nodes -
moderate
heading-order— Heading levels should only increase by one 1 node -
moderate
landmark-one-main— Document should have one main landmark 1 node -
moderate
region— All page content should be contained by landmarks 1 node
Accessibility failures 4 of 13 audits
-
color-contrast— Background and foreground colors do not have a sufficient contrast ratio. 130 nodes -
link-in-text-block— Links rely on color to be distinguishable. 7 nodes -
heading-order— Heading elements are not in a sequentially-descending order 1 node -
landmark-one-main— Document does not have a main landmark. 1 node
Hygiene
Measurement log
Every stored run for this URL, newest first.
| When | Scores | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took | Archive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 20, 2026, 10:48 AM UTC | 100 | 902 ms | 0 | 0 ms | 15.2 kB | 3/3 | ±0 | 2,464 -1% | 27.6s |
|
|
| Sep 13, 2026, 9:03 AM UTC | 100 | 905 ms | 0 | 0 ms | 15.2 kB | 3/3 | ±0 | 2,475 0% | 27.8s |
|
|
| Sep 6, 2026, 5:38 AM UTC | 100 | 904 ms | 0 | 0 ms | 15.2 kB | 3/3 | ±0 | 2,491 0% | 27.4s |
|
|
| Aug 30, 2026, 1:18 AM UTC | 100 | 912 ms | 0 | 0 ms | 15.2 kB | 3/3 | ±0 | 3,461 +39% | 23.9s |
|
|
| Aug 21, 2026, 6:52 AM UTC | 100 | 909 ms | 0 | 0 ms | 15.3 kB | 3/3 | ±0 | 2,549 +3% | 27.9s |
|