jekyllrb.com

https://jekyllrb.com/

Ranks Overall #1,070 Developer Tooling #35 Site Generators #11

Data from Sep 7, 2026, 7:08 PM UTC 40h old Measured every 2 days · 13 runs since Aug 20, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Wayback Machine

Stack

Built with Jekyll 4.4.1

Hosted by GitHub Pages

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-08-09 → 2026-09-05).

LCP 1.17 s good

INP 77 ms good

CLS 0 good

Lighthouse Scores

Performance

no change

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 3.00 s.

375 ms
750 ms
1.13 s
1.50 s
1.88 s
2.25 s
2.63 s
3.00 s

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.

Lab metrics Lighthouse, mobile

Metric	Current	Previous	Change	Best	Worst
LCP Largest Contentful Paint	2.05 s	2.12 s	↓ -72 ms (-3.4%)	1.96 s	2.98 s
CLS Cumulative Layout Shift	0	0	→ no change	0	0
TBT Total Blocking Time	51 ms	25 ms	↑ +26 ms (+104%)	25 ms	74 ms
FCP First Contentful Paint	913 ms	910 ms	↑ +3 ms (+0.3%)	902 ms	919 ms
Speed Index	913 ms	910 ms	↑ +3 ms (+0.3%)	902 ms	919 ms
TTFB Time to First Byte	605 ms	610 ms	↓ -5 ms (-0.8%)	602 ms	619 ms

Metric

Current

Change

Best

Worst

Trend

LCP Largest Contentful Paint

2.05 s

2.12 s

↓ -72 ms (-3.4%)

1.96 s

2.98 s

CLS Cumulative Layout Shift

→ no change

TBT Total Blocking Time

51 ms

25 ms

↑ +26 ms (+104%)

25 ms

74 ms

FCP First Contentful Paint

913 ms

910 ms

↑ +3 ms (+0.3%)

902 ms

919 ms

Speed Index

913 ms

910 ms

↑ +3 ms (+0.3%)

902 ms

919 ms

TTFB Time to First Byte

605 ms

610 ms

↓ -5 ms (-0.8%)

602 ms

619 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab metrics LCP metric shown above is throttled.

element render delay 65 ms

time to first byte 56 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-08-09 → 2026-09-05).

Metric	p75	Rating	Distribution (good / needs work / poor)
LCP CWV	1.17 s	good	96.3% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run	77 ms	good	97.6% good
CLS CWV	0	good	99.7% good
FCP	1.18 s	good	90.8% good
TTFB	617 ms	good	83.1% good

Metric

p75

Rating

Distribution (good / needs work / poor)

LCP CWV

1.17 s

good

96.3% good

INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run

77 ms

good

97.6% good

CLS CWV

good

99.7% good

FCP

1.18 s

good

90.8% good

TTFB

617 ms

good

83.1% good

Lab LCP vs Field LCP

Lab 2.05 s

Field p75 1.17 s

The lab LCP is 1.76× the field p75 — real users likely have above-average hardware or network connectivity.

Field history 25 weeks

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

Week ending	LCP	INP	FCP	TTFB
2026-09-05	1.17 s	77 ms	1.18 s	617 ms
2026-08-29	1.18 s	74 ms	1.19 s	639 ms
2026-08-22	1.13 s	75 ms	1.16 s	596 ms
2026-08-15	1.08 s	76 ms	1.09 s	595 ms
2026-08-08	1.06 s	75 ms	1.07 s	548 ms
2026-08-01	1.03 s	76 ms	1.05 s	559 ms
2026-07-25	1.06 s	74 ms	1.08 s	609 ms
2026-07-18	1.08 s	73 ms	1.09 s	604 ms
2026-07-11	1.13 s	76 ms	1.15 s	638 ms
2026-07-04	1.16 s	73 ms	1.17 s	639 ms
2026-06-27	1.14 s	75 ms	1.14 s	622 ms
2026-06-20	1.14 s	74 ms	1.14 s	621 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-05

1.17 s

77 ms

1.18 s

617 ms

2026-08-29

1.18 s

74 ms

1.19 s

639 ms

2026-08-22

1.13 s

75 ms

1.16 s

596 ms

2026-08-15

1.08 s

76 ms

1.09 s

595 ms

2026-08-08

1.06 s

75 ms

1.07 s

548 ms

2026-08-01

1.03 s

76 ms

1.05 s

559 ms

2026-07-25

1.06 s

74 ms

1.08 s

609 ms

2026-07-18

1.08 s

73 ms

1.09 s

604 ms

2026-07-11

1.13 s

76 ms

1.15 s

638 ms

2026-07-04

1.16 s

73 ms

1.17 s

639 ms

2026-06-27

1.14 s

75 ms

1.14 s

622 ms

2026-06-20

1.14 s

74 ms

1.14 s

621 ms

Page weight

Metric	Current	Previous	Change	Best	Worst
Page Weight	371 kB	369 kB	↑ +1.7 kB (+0.5%)	367 kB	371 kB
Requests	13	12	↑ +1 (+8.3%) significant	12	13
Third-party Weight	232 kB	230 kB	↑ +1.6 kB (+0.7%)	229 kB	232 kB
Third-party CPU	61 ms	43 ms	↑ +19 ms (+43.5%) significant	43 ms	70 ms
Unused JS	98.8 kB	100 kB	↓ -1.4 kB (-1.4%)	98.0 kB	100 kB
Unused CSS	12.1 kB	12.1 kB	→ no change	12.1 kB	12.1 kB

Metric

Current

Change

Best

Worst

Trend

Page Weight

371 kB

369 kB

↑ +1.7 kB (+0.5%)

367 kB

371 kB

Requests

↑ +1 (+8.3%) significant

Third-party Weight

232 kB

230 kB

↑ +1.6 kB (+0.7%)

229 kB

232 kB

Third-party CPU

61 ms

43 ms

↑ +19 ms (+43.5%) significant

43 ms

70 ms

Unused JS

98.8 kB

100 kB

↓ -1.4 kB (-1.4%)

98.0 kB

100 kB

Unused CSS

12.1 kB

→ no change

12.1 kB

By resource type

script image font

script 62.7% 231 kB · 3 req
image 19.7% 72.6 kB · 3 req
font 12.6% 46.4 kB · 2 req
stylesheet 3.9% 14.2 kB · 1 req
document 1% 3.9 kB · 1 req
other 0.1% 483 B · 2 req

Third parties 3 entities

232 kB transferred, 61 ms on the main thread.

Google Tag Manager script 161 kB · 39 ms CPU

JSDelivr CDN script 48.6 kB · 11 ms CPU

Google Analytics 21.9 kB · 12 ms CPU

Page health

Metric	Current	Previous	Change	Best	Worst
Main Thread Work	567 ms	385 ms	↑ +182 ms (+47.2%) significant	385 ms	584 ms
Long Tasks	1	1	→ no change	1	3
DOM Elements	143	143	→ no change	143	143
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	12	12	→ no change	12	13
A11y Failures	2	2	→ no change	2	2
A11y Failing Nodes	8	8	→ no change	8	8

Main thread work

script evaluation 269 ms

other 117 ms

style layout 84 ms

script parse compile 68 ms

parse HTML 14 ms

paint composite render 9 ms

garbage collection 7 ms

Axe violations axe-core 4.13.0, full rule set

12 violating nodes across 3 rules, 207 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious link-in-text-block — Links must be distinguishable without relying on color 7 nodes
moderate region — All page content should be contained by landmarks 4 nodes
moderate landmark-one-main — Document should have one main landmark 1 node

Accessibility failures 2 of 20 audits

link-in-text-block — Links rely on color to be distinguishable. 7 nodes
landmark-one-main — Document does not have a main landmark. 1 node

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When	Perf	LCP	TBT	Weight	Runs	Spread	Bench	Took	Archive
Sep 7, 2026, 7:08 PM UTC	99	2.05 s	51 ms	371 kB	3/3	±0	2,319 -7%	20.8s	Wayback
Sep 5, 2026, 6:05 PM UTC	99	2.12 s	25 ms	369 kB	3/3	±0	4,246 +71%	19.5s	Wayback
Sep 4, 2026, 11:01 AM UTC	99	2.00 s	51 ms	369 kB	3/3	±0	2,439 -2%	21.4s	Wayback
Sep 3, 2026, 6:53 AM UTC	99	2.01 s	58 ms	369 kB	3/3	±5	2,456 -1%	21.6s	Wayback
Sep 2, 2026, 3:04 AM UTC	99	2.01 s	54 ms	369 kB	3/3	±5	2,406 -3%	21.2s	Wayback
Aug 31, 2026, 9:29 PM UTC	99	1.96 s	60 ms	369 kB	3/3	±1	2,428 -2%	22.1s	Wayback
Aug 27, 2026, 2:29 PM UTC	99	2.10 s	57 ms	368 kB	3/3	±19	2,450 -1%	23.1s	Wayback
Aug 26, 2026, 4:38 AM UTC	99	2.02 s	61 ms	368 kB	3/3	±2	2,462 -1%	22.8s	Wayback
Aug 25, 2026, 3:53 AM UTC	99	2.11 s	37 ms	367 kB	3/3	±12	3,027 +22%	23.7s	Wayback
Aug 24, 2026, 3:02 AM UTC	94	2.98 s	74 ms	368 kB	3/3	±25	2,363 -5%	24.8s	Wayback
Aug 23, 2026, 1:15 AM UTC	99	2.04 s	53 ms	368 kB	3/3	±27	2,473 0%	29s	Wayback
Aug 22, 2026, 1:09 AM UTC	98	2.14 s	73 ms	368 kB	3/3	±27	2,320 -6%	27s	Wayback
Aug 20, 2026, 11:32 PM UTC	99	1.96 s	56 ms	368 kB	3/3	±5	2,499 +1%	21.3s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took