sourcetarget.email

Ranks Overall #1,179 Built Awesome #810

Data from Oct 4, 2026, 10:47 PM UTC 3d old Measured once a week · 7 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

Built with Eleventy

Hosted by Cloudflare

Lighthouse Scores LAB Simulated

Performance

↓ -1 (-1%)

Accessibility

no change

100

Best Practices

no change

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
LCP CWV (estimate) Largest Contentful Paint	2.31 s good	↑ +124 ms (+5.7%) 2.04 s – 2.36 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—
CLS CWV (estimate) Cumulative Layout Shift	0.011 good	→ no change 0.011 – 0.011
TBT Total Blocking Time	0 ms good	→ no change 0 ms – 0 ms
FCP First Contentful Paint	830 ms good	↑ +12 ms (+1.5%) 816 ms – 1.21 s
Speed Index	830 ms good	↑ +12 ms (+1.5%) 816 ms – 1.21 s
TTFB Time to First Byte	475 ms good	↓ -136 ms (-22.3%) 464 ms – 683 ms

Metric

Lab Simulated

Value

Change / range

Trend

LCP CWV (estimate) Largest Contentful Paint

2.31 s good

↑ +124 ms (+5.7%) 2.04 s – 2.36 s

INP CWV Interaction to Next Paint — field only, no lab run can measure it

n/a

—

CLS CWV (estimate) Cumulative Layout Shift

0.011 good

→ no change 0.011 – 0.011

TBT Total Blocking Time

0 ms good

→ no change 0 ms – 0 ms

FCP First Contentful Paint

830 ms good

↑ +12 ms (+1.5%) 816 ms – 1.21 s

Speed Index

830 ms good

↑ +12 ms (+1.5%) 816 ms – 1.21 s

TTFB Time to First Byte

475 ms good

↓ -136 ms (-22.3%) 464 ms – 683 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 536 ms

time to first byte 46 ms

resource load duration 40 ms

resource load delay 8 ms

Page weight

Metric	Value	Change / range
Page Weight	1.24 MB	↓ -207 B 1.24 MB – 1.24 MB
Requests	31	→ no change 31 – 31
Third-party Weight	1.14 MB	↓ -14 B 1.14 MB – 1.14 MB
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

Metric

Value

Change / range

Trend

Page Weight

1.24 MB

↓ -207 B 1.24 MB – 1.24 MB

Requests

→ no change 31 – 31

Third-party Weight

1.14 MB

↓ -14 B 1.14 MB – 1.14 MB

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	Share	Size	Requests
image	92.5%	1.14 MB	12
font	6%	74.0 kB	3
document	0.9%	10.8 kB	1
other	0.6%	7.6 kB	13
Total		1.24 MB	31

Third parties 1 entities

Entity	Transfer	Size	Main thread Simulated
Cloudinary	image	1.14 MB	0 ms
Total		1.14 MB	0 ms

Entity

Transfer

Size

Main thread Simulated

Cloudinary

image

1.14 MB

0 ms

Total

1.14 MB

0 ms

Page health

Metric	Value	Change / range
Main Thread Work	302 ms	↓ -92 ms (-23.4%) significant 270 ms – 394 ms
Long Tasks	0	→ no change 0 – 0
DOM Elements	113	→ no change 113 – 113
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	9	→ no change 9 – 9
A11y Failures	1	→ no change 1 – 1
A11y Failing Nodes	1	→ no change 1 – 1

Metric

Value

Change / range

Trend

Main Thread Work

302 ms

↓ -92 ms (-23.4%) significant 270 ms – 394 ms

Long Tasks

→ no change 0 – 0

DOM Elements

113

→ no change 113 – 113

Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)

→ no change 9 – 9

A11y Failures

→ no change 1 – 1

A11y Failing Nodes

→ no change 1 – 1

Main thread work

Task	Share	Duration Simulated
other	50%	151 ms
style layout	32%	95 ms
paint composite render	8%	25 ms
script evaluation	6%	18 ms
parse HTML	4%	12 ms
script parse compile	0%	1 ms
Total		302 ms

Task

Time

Duration Simulated

other

50%

151 ms

style layout

32%

95 ms

paint composite render

25 ms

script evaluation

18 ms

parse HTML

12 ms

script parse compile

1 ms

Total

302 ms

Axe violations axe-core 4.13.0, full rule set

9 violating nodes across 3 rules, 266 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

minor image-redundant-alt — Alternative text of images should not be repeated as text 7 nodes

Offending elements (5 of 7)

img[data-pristine="/optim/topics/nature.jpg"]

<img loading="lazy" data-pristine="/optim/topics/nature..." sizes="(min-width: 740px) 6..." srcset="/optim/320/topics/na..." src="/optim/640/topics/na..." alt="Nature" draggable="false" class="radius…

img[data-pristine="/optim/topics/graph-theory.jpg"]

<img loading="lazy" data-pristine="/optim/topics/graph-..." sizes="(min-width: 740px) 6..." srcset="/optim/320/topics/gr..." src="/optim/640/topics/gr..." alt="Graph Visualization" draggable="false" …

img[data-pristine="/optim/topics/technology2.jpg"]

<img loading="lazy" data-pristine="/optim/topics/techno..." sizes="(min-width: 740px) 6..." srcset="/optim/320/topics/te..." src="/optim/640/topics/te..." alt="Technology" draggable="false" class="ra…

img[alt="Network Science"]

<img loading="lazy" data-pristine="/optim/topics/networ..." sizes="(min-width: 740px) 6..." srcset="/optim/320/topics/ne..." src="/optim/640/topics/ne..." alt="Network Science" draggable="false" clas…

img[data-pristine="/optim/topics/sna.jpg"]

<img loading="lazy" data-pristine="/optim/topics/sna.jp..." sizes="(min-width: 740px) 6..." srcset="/optim/320/topics/sn..." src="/optim/577/topics/sn..." alt="Social Network Analy..." draggable="fal…

serious link-name — Links must have discernible text 1 node
Offending element
1. a[rel="me"]
```
<a rel="me" href="https://mastodon.cjlm.ca/@christian"></a>
```
serious scrollable-region-focusable — Scrollable region must have keyboard access 1 node
Offending element
1. .topic-marquee__list
```
<ul class="topic-marquee__list">
```

Accessibility failures 1 of 27 audits

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

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	Weight	Runs	Spread	Bench	Took	Archive
Oct 4, 2026, 10:47 PM UTC	98	2.31 s	0.011	1.24 MB	3/3	±1	2,931 +18%	21.3s	Wayback
Sep 27, 2026, 8:56 PM UTC	99	2.19 s	0.011	1.24 MB	3/3	±2	2,490 0%	22.1s	Wayback
Sep 20, 2026, 5:59 PM UTC	98	2.30 s	0.011	1.24 MB	3/3	±1	2,488 0%	21.6s	Wayback
Sep 13, 2026, 5:18 PM UTC	98	2.30 s	0.011	1.24 MB	3/3	±1	2,509 +1%	22s	Wayback
Sep 6, 2026, 1:57 PM UTC	99	2.04 s	0.011	1.24 MB	3/3	±2	2,470 -1%	21.6s	Wayback
Aug 30, 2026, 8:05 AM UTC	98	2.36 s	0.011	1.24 MB	3/3	±0	3,589 +44%	22.5s	Wayback
Aug 21, 2026, 6:52 AM UTC	99	2.20 s	0.011	1.24 MB	3/3	±1	2,471 -1%	21.2s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB

LCP Subparts LAB 🐇 Unthrottled

Page weight

By resource type

Third parties 1 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 1 of 27 audits

Hygiene

Measurement log

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled