blog.glitch.com

https://blog.glitch.com/

Ranks Overall #698 Built Awesome #520

Data from Oct 2, 2026, 11:09 PM UTC 5d old Measured once a week · 7 runs since Aug 20, 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 3.0.0

Lighthouse Scores LAB Simulated

100

Performance

↑ +3 (+3.1%)

Accessibility

no change

100

Best Practices

no change

100

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 (2026-09-02 → 2026-09-29), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	1.03 s good	↓ -160 ms (-13.5%) significant 982 ms – 1.19 s	1.05 s good	92.8% 4.2% 3%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	104 ms good	88.8% 10.8% 0.5%
CLS CWV Cumulative Layout Shift	0.024 good	→ no change 0.024 – 0.024	0 good	88.7% 5.7% 5.6%
TBT Total Blocking Time	0 ms good	↓ -184 ms (-100%) significant 0 ms – 184 ms	n/a	—
FCP First Contentful Paint	1.03 s good	↓ -46 ms (-4.3%) 982 ms – 1.07 s	969 ms good	89.1% 6.4% 4.5%
Speed Index	1.03 s good	↓ -46 ms (-4.3%) 982 ms – 1.07 s	n/a	—
TTFB Time to First Byte	669 ms good	↓ -11 ms (-1.6%) 639 ms – 680 ms	736 ms good	76.8% 15.2% 8%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

1.03 s good

↓ -160 ms (-13.5%) significant 982 ms – 1.19 s

1.05 s good

92.8% 4.2% 3%

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

n/a

—

104 ms good

88.8% 10.8% 0.5%

CLS CWV Cumulative Layout Shift

0.024 good

→ no change 0.024 – 0.024

0 good

88.7% 5.7% 5.6%

TBT Total Blocking Time

0 ms good

↓ -184 ms (-100%) significant 0 ms – 184 ms

n/a

—

FCP First Contentful Paint

1.03 s good

↓ -46 ms (-4.3%) 982 ms – 1.07 s

969 ms good

89.1% 6.4% 4.5%

Speed Index

1.03 s good

↓ -46 ms (-4.3%) 982 ms – 1.07 s

n/a

—

TTFB Time to First Byte

669 ms good

↓ -11 ms (-1.6%) 639 ms – 680 ms

736 ms good

76.8% 15.2% 8%

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.

time to first byte 80 ms

resource load duration 71 ms

element render delay 12 ms

resource load delay 9 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.03 s

Field p75 1.05 s

The lab LCP is 0.98× the field p75 — real users likely have similar hardware or network connectivity to the lab test.

Page weight

Metric	Value	Change / range
Page Weight	539 kB	↑ +67 B 539 kB – 539 kB
Requests	13	→ no change 13 – 13
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

Metric

Value

Change / range

Trend

Page Weight

539 kB

↑ +67 B 539 kB – 539 kB

Requests

→ no change 13 – 13

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	Share	Size	Requests
font	66%	346 kB	1
image	31%	162 kB	10
document	3%	15.5 kB	1
Total		539 kB	13

Page health

Metric	Value	Change / range
Main Thread Work	265 ms	↓ -774 ms (-74.5%) significant 173 ms – 1.04 s
Long Tasks	0	↓ -4 (-100%) significant 0 – 4
DOM Elements	176	→ no change 176 – 176
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	2	→ no change 2 – 2
A11y Failures	1	→ no change 1 – 1
A11y Failing Nodes	1	→ no change 1 – 1

Metric

Value

Change / range

Trend

Main Thread Work

265 ms

↓ -774 ms (-74.5%) significant 173 ms – 1.04 s

Long Tasks

↓ -4 (-100%) significant 0 – 4

DOM Elements

176

→ no change 176 – 176

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

→ no change 2 – 2

A11y Failures

→ no change 1 – 1

A11y Failing Nodes

→ no change 1 – 1

Main thread work

Task	Share	Duration Simulated
other	43%	113 ms
style layout	34%	91 ms
parse HTML	8%	22 ms
script evaluation	8%	20 ms
paint composite render	7%	19 ms
script parse compile	0%	1 ms
Total		265 ms

Task

Time

Duration Simulated

other

43%

113 ms

style layout

34%

91 ms

parse HTML

22 ms

script evaluation

20 ms

paint composite render

19 ms

script parse compile

1 ms

Total

265 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 332 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 1 node
Offending element
1. a[href$="posts"]
```
<a href="/posts">All Stories ›</a>
```
moderate page-has-heading-one — Page should contain a level-one heading 1 node
Offending element
1. html
```
<html lang="en" data-theme="light">
```

Accessibility failures 1 of 19 audits

color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 1 node

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	FCP	TTFB
2026-09-26	1.04 s	107 ms	956 ms	728 ms
2026-09-19	1.04 s	106 ms	956 ms	727 ms
2026-09-12	1.03 s	104 ms	946 ms	719 ms
2026-09-05	1.02 s	105 ms	945 ms	712 ms
2026-08-29	1.02 s	104 ms	946 ms	713 ms
2026-08-22	1.01 s	105 ms	930 ms	701 ms
2026-08-15	1.01 s	105 ms	939 ms	697 ms
2026-08-08	999 ms	105 ms	933 ms	689 ms
2026-08-01	1.02 s	106 ms	949 ms	693 ms
2026-07-25	1.04 s	105 ms	966 ms	706 ms
2026-07-18	1.07 s	103 ms	998 ms	733 ms
2026-07-11	1.10 s	102 ms	1.02 s	763 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

1.04 s

107 ms

956 ms

728 ms

2026-09-19

1.04 s

106 ms

956 ms

727 ms

2026-09-12

1.03 s

104 ms

946 ms

719 ms

2026-09-05

1.02 s

105 ms

945 ms

712 ms

2026-08-29

1.02 s

104 ms

946 ms

713 ms

2026-08-22

1.01 s

105 ms

930 ms

701 ms

2026-08-15

1.01 s

105 ms

939 ms

697 ms

2026-08-08

999 ms

105 ms

933 ms

689 ms

2026-08-01

1.02 s

106 ms

949 ms

693 ms

2026-07-25

1.04 s

105 ms

966 ms

706 ms

2026-07-18

1.07 s

103 ms

998 ms

733 ms

2026-07-11

1.10 s

102 ms

1.02 s

763 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 2, 2026, 11:09 PM UTC	100	1.03 s	0.024	0 ms	539 kB	3/3	±0	2,654 +7%	21.6s	Wayback
Sep 25, 2026, 4:38 PM UTC	97	1.19 s	0.024	184 ms	539 kB	3/3	±4	2,167 -13%	25.1s	Wayback
Sep 18, 2026, 1:24 PM UTC	100	1.00 s	0.024	0 ms	539 kB	3/3	±6	2,485 0%	25.8s	Wayback
Sep 11, 2026, 1:16 PM UTC	100	995 ms	0.024	0 ms	539 kB	3/3	±6	2,448 -2%	24.6s	Wayback
Sep 4, 2026, 10:44 AM UTC	100	982 ms	0.024	0 ms	539 kB	3/3	±0	4,555 +83%	21.6s	Wayback
Aug 28, 2026, 1:26 AM UTC	100	1.01 s	0.024	0 ms	539 kB	3/3	±0	2,493 0%	21.2s	Wayback
Aug 20, 2026, 7:09 PM UTC	100	1.01 s	0.024	0 ms	539 kB	3/3	±4	2,446 -2%	21.3s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Embed this score

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

Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐇 Unthrottled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 1 of 19 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD