fastly.com

https://www.fastly.com/

Ranks Overall #1,630 Developer Tooling #71 Web Hosts #10

Data from Oct 7, 2026, 2:37 AM UTC 38h old Measured every 2 days · 24 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 Astro

Ar Hosted by Artisanal bits

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 10.63 s. Compare this filmstrip against another site.

1.33 s
2.59 s
3.99 s
5.32 s
6.64 s
7.97 s
9.30 s
10.63 s

Lighthouse Scores LAB Simulated

Performance

↓ -9 (-15.8%)

100

Accessibility

no change

Best Practices

no change

SEO

no change

Metrics LAB FIELD

Core Web Vitals: failing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-07 → 2026-10-04), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	9.88 s poor	↑ +4222 ms (+74.6%) significant 3.49 s – 16.38 s	2.40 s good	76.6% 13.8% 9.6%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	245 ms needs work	67.3% 26.6% 6.2%
CLS CWV Cumulative Layout Shift	0 good	→ no change 0 – 0.055	0.030 good	94% 4.4% 1.6%
TBT Total Blocking Time	1.55 s poor	↑ +551 ms (+55.4%) 728 ms – 2.40 s	n/a	—
FCP First Contentful Paint	1.53 s good	↑ +25 ms (+1.7%) 1.38 s – 3.65 s	1.85 s needs work	73.9% 15.2% 10.9%
Speed Index	2.22 s good	↑ +458 ms (+25.9%) 1.39 s – 5.22 s	n/a	—
TTFB Time to First Byte	643 ms good	↑ +7 ms (+1.1%) 605 ms – 1.10 s	940 ms needs work	71% 18.5% 10.6%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

9.88 s poor

↑ +4222 ms (+74.6%) significant 3.49 s – 16.38 s

2.40 s good

76.6% 13.8% 9.6%

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

n/a

—

245 ms needs work

67.3% 26.6% 6.2%

CLS CWV Cumulative Layout Shift

0 good

→ no change 0 – 0.055

0.030 good

94% 4.4% 1.6%

TBT Total Blocking Time

1.55 s poor

↑ +551 ms (+55.4%) 728 ms – 2.40 s

n/a

—

FCP First Contentful Paint

1.53 s good

↑ +25 ms (+1.7%) 1.38 s – 3.65 s

1.85 s needs work

73.9% 15.2% 10.9%

Speed Index

2.22 s good

↑ +458 ms (+25.9%) 1.39 s – 5.22 s

n/a

—

TTFB Time to First Byte

643 ms good

↑ +7 ms (+1.1%) 605 ms – 1.10 s

940 ms needs work

71% 18.5% 10.6%

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.

resource load delay 2.03 s

resource load duration 1.21 s

time to first byte 573 ms

element render delay 76 ms

LCP LAB Simulated vs LCP FIELD

Lab 9.88 s

Field p75 2.40 s

The lab LCP is 4.12× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	2.75 MB	↑ +10.9 kB (+0.4%) 2.56 MB – 3.33 MB
Requests	174	→ no change 133 – 197
Third-party Weight	730 kB	↑ +1.9 kB (+0.3%) 537 kB – 773 kB
Third-party CPU	278 ms	↑ +52 ms (+23%) 194 ms – 605 ms
Unused JS	493 kB	↓ -1.6 kB (-0.3%) 394 kB – 695 kB
Unused CSS	0 B	→ no change 0 B – 94.7 kB

Metric

Value

Change / range

Trend

Page Weight

2.75 MB

↑ +10.9 kB (+0.4%) 2.56 MB – 3.33 MB

Requests

174

→ no change 133 – 197

Third-party Weight

730 kB

↑ +1.9 kB (+0.3%) 537 kB – 773 kB

Third-party CPU

278 ms

↑ +52 ms (+23%) 194 ms – 605 ms

Unused JS

493 kB

↓ -1.6 kB (-0.3%) 394 kB – 695 kB

Unused CSS

0 B

→ no change 0 B – 94.7 kB

By resource type

Type	Share	Size	Requests
script	70.9%	1.95 MB	45
image	23.4%	641 kB	65
font	2.3%	63.9 kB	2
document	1.7%	46.6 kB	3
stylesheet	0.9%	23.6 kB	9
other	0.9%	23.4 kB	46
Total		2.75 MB	174

Third parties 25 entities

Entity	Transfer	Size	Main thread Simulated
Pendo	script	202 kB	31 ms
Facebook	script	183 kB	105 ms
intellimize.co	script	112 kB	34 ms
zoominfo.com	script	35.8 kB	12 ms
Bizible		26.2 kB	8 ms
All 25		730 kB	278 ms

Entity

Transfer

Size

Main thread Simulated

Pendo

script

202 kB

31 ms

Facebook

script

183 kB

105 ms

intellimize.co

script

112 kB

34 ms

zoominfo.com

script

35.8 kB

12 ms

Bizible

26.2 kB

8 ms

All 25

730 kB

278 ms

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

67.7% of pixels differ — the page changes substantially. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric	Value	Change / range
Main Thread Work	6.41 s	↑ +1475 ms (+29.9%) significant 4.19 s – 8.64 s
Long Tasks	19	↑ +6 (+46.2%) significant 11 – 20
DOM Elements	1,534	→ no change 1,167 – 1,546
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	3	→ no change 2 – 27
A11y Failures	0	→ no change 0 – 6
A11y Failing Nodes	0	→ no change 0 – 15

Metric

Value

Change / range

Trend

Main Thread Work

6.41 s

↑ +1475 ms (+29.9%) significant 4.19 s – 8.64 s

Long Tasks

↑ +6 (+46.2%) significant 11 – 20

DOM Elements

1,534

→ no change 1,167 – 1,546

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

→ no change 2 – 27

A11y Failures

→ no change 0 – 6

A11y Failing Nodes

→ no change 0 – 15

Main thread work

Task	Share	Duration Simulated
script evaluation	59%	3.77 s
other	20%	1.26 s
style layout	9%	548 ms
script parse compile	8%	522 ms
paint composite render	2%	120 ms
parse HTML	2%	98 ms
garbage collection	2%	98 ms
Total		6.41 s

Task

Time

Duration Simulated

script evaluation

59%

3.77 s

other

20%

1.26 s

style layout

548 ms

script parse compile

522 ms

paint composite render

120 ms

parse HTML

98 ms

garbage collection

98 ms

Total

6.41 s

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 2 rules, 1143 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

moderate region — All page content should be contained by landmarks 2 nodes
Offending elements
1. ._internal_412qr_31
```
<div class="_internal_412qr_31 _dismissible_412qr_61">
```
2. #insent-iframe >>> #insent-chat-widget
```
<div id="insent-chat-widget">
```
critical image-alt — Images must have alternative text 1 node
Offending element
1. #insent-iframe >>> #insent-popup-card-close-icon
```
<img id="insent-popup-card-close-icon" src="/static/media/close.ec75d473.svg" class="sc-cEvuZC gxfXwW">
```

Best Practices failures 3 of 19 audits

third-party-cookies — Uses third-party cookies 32 items
inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item
valid-source-maps — Missing source maps for large first-party JavaScript 4 items

SEO failures 1 of 10 audits

link-text — Links do not have descriptive text 1 item

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
2026-10-03	2.34 s	247 ms	0.030	1.79 s	878 ms
2026-09-26	2.37 s	257 ms	0.030	1.85 s	751 ms
2026-09-19	2.60 s	262 ms	0.040	2.11 s	770 ms
2026-09-12	2.81 s	270 ms	0.050	2.36 s	780 ms
2026-09-05	2.91 s	271 ms	0.050	2.46 s	751 ms
2026-08-29	2.91 s	286 ms	0.050	2.50 s	774 ms
2026-08-22	2.96 s	295 ms	0.050	2.51 s	806 ms
2026-08-15	2.84 s	287 ms	0.060	2.40 s	763 ms
2026-08-08	2.88 s	290 ms	0.060	2.42 s	777 ms
2026-08-01	2.85 s	288 ms	0.060	2.40 s	747 ms
2026-07-25	3.03 s	286 ms	0.050	2.63 s	913 ms
2026-07-18	3.39 s	286 ms	0.040	2.92 s	1.05 s

Week ending

LCP

INP

CLS

FCP

TTFB

2026-10-03

2.34 s

247 ms

0.030

1.79 s

878 ms

2026-09-26

2.37 s

257 ms

0.030

1.85 s

751 ms

2026-09-19

2.60 s

262 ms

0.040

2.11 s

770 ms

2026-09-12

2.81 s

270 ms

0.050

2.36 s

780 ms

2026-09-05

2.91 s

271 ms

0.050

2.46 s

751 ms

2026-08-29

2.91 s

286 ms

0.050

2.50 s

774 ms

2026-08-22

2.96 s

295 ms

0.050

2.51 s

806 ms

2026-08-15

2.84 s

287 ms

0.060

2.40 s

763 ms

2026-08-08

2.88 s

290 ms

0.060

2.42 s

777 ms

2026-08-01

2.85 s

288 ms

0.060

2.40 s

747 ms

2026-07-25

3.03 s

286 ms

0.050

2.63 s

913 ms

2026-07-18

3.39 s

286 ms

0.040

2.92 s

1.05 s

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 7, 2026, 2:37 AM UTC	48	9.88 s	0	1.55 s	2.75 MB	3/3	±23	2,475 0%	132.6s	Wayback
Oct 4, 2026, 4:53 AM UTC	57	5.66 s	0	995 ms	2.74 MB	3/3	±11	2,586 +4%	103.2s	Wayback
Sep 30, 2026, 8:33 PM UTC	40	16.38 s	0.055	1.69 s	2.74 MB	3/3	±16	2,432 -2%	136.6s	Wayback
Sep 28, 2026, 6:37 PM UTC	64	4.76 s	0	728 ms	2.60 MB	3/3	±28	3,412 +37%	100.9s	Wayback
Sep 25, 2026, 11:42 AM UTC	56	5.41 s	0.055	1.14 s	2.56 MB	3/3	±6	2,486 0%	115.3s	Wayback
Sep 23, 2026, 5:59 AM UTC	55	5.52 s	0.055	1.25 s	2.61 MB	3/3	±4	2,474 0%	116.9s	Wayback
Sep 21, 2026, 1:30 AM UTC	53	4.69 s	0	1.76 s	3.11 MB	3/3	±11	2,450 -1%	111.6s	Wayback
Sep 18, 2026, 2:02 PM UTC	57	4.54 s	0	1.34 s	3.27 MB	3/3	±8	2,961 +19%	105.6s	Wayback
Sep 16, 2026, 9:09 AM UTC	55	5.48 s	0.055	1.18 s	2.60 MB	3/3	±3	2,470 -1%	120.8s	Wayback
Sep 14, 2026, 5:49 AM UTC	56	4.55 s	0.055	1.40 s	3.29 MB	3/3	±18	3,241 +30%	106.4s	Wayback
Sep 11, 2026, 11:20 PM UTC	66	3.49 s	0.055	1.22 s	2.61 MB	3/3	±15	2,327 -6%	124.1s	Wayback
Sep 9, 2026, 6:05 PM UTC	55	5.43 s	0.055	1.27 s	2.62 MB	3/3	±4	2,478 0%	60.4s	Wayback
Sep 7, 2026, 3:25 PM UTC	53	4.56 s	0.055	1.98 s	3.33 MB	3/3	±7	2,310 -7%	61.5s	Wayback
Sep 5, 2026, 12:44 PM UTC	53	4.47 s	0.055	1.99 s	3.26 MB	3/3	±5	2,380 -4%	59.6s	Wayback
Sep 4, 2026, 10:47 AM UTC	38	9.59 s	0.055	2.40 s	3.25 MB	3/3	±4	2,499 +1%	64.7s	Wayback
Sep 3, 2026, 1:05 AM UTC	41	9.78 s	0.055	1.30 s	3.13 MB	3/3	±2	2,995 +20%	87.4s	Wayback
Sep 1, 2026, 11:06 PM UTC	40	9.83 s	0.055	1.67 s	3.29 MB	3/3	±2	2,711 +9%	52.6s	Wayback
Aug 31, 2026, 9:24 PM UTC	38	10.87 s	0.055	2.30 s	3.30 MB	3/3	±2	2,495 0%	58.8s	Wayback
Aug 26, 2026, 2:50 PM UTC	39	10.63 s	0.055	1.82 s	3.07 MB	3/3	±6	2,425 -2%	54.6s	Wayback
Aug 25, 2026, 2:02 PM UTC	42	11.82 s	0	1.25 s	3.05 MB	3/3	±2	3,364 +35%	48.7s	Wayback
Aug 24, 2026, 12:48 PM UTC	40	12.00 s	0.046	1.67 s	3.05 MB	3/3	±15	2,894 +16%	63.9s	Wayback
Aug 23, 2026, 12:37 PM UTC	41	9.42 s	0.055	1.61 s	3.08 MB	3/3	±11	2,923 +18%	86.7s	Wayback
Aug 22, 2026, 11:20 AM UTC	39	9.67 s	0.055	2.24 s	3.06 MB	3/3	±11	2,504 +1%	61.9s	Wayback
Aug 21, 2026, 10:30 AM UTC	41	12.03 s	0.055	1.34 s	3.07 MB	3/3	±10	2,986 +20%	48.5s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Archive

Oct 7, 2026, 2:37 AM UTC

9.88 s

1.55 s

2.75 MB

3/3

±23

2,475 0%

132.6s

Wayback

Oct 4, 2026, 4:53 AM UTC

5.66 s

995 ms

2.74 MB

3/3

±11

2,586 +4%

103.2s

Wayback

Sep 30, 2026, 8:33 PM UTC

16.38 s

0.055

1.69 s

2.74 MB

3/3

±16

2,432 -2%

136.6s

Wayback

Sep 28, 2026, 6:37 PM UTC

4.76 s

728 ms

2.60 MB

3/3

±28

3,412 +37%

100.9s

Wayback

Sep 25, 2026, 11:42 AM UTC

5.41 s

0.055

1.14 s

2.56 MB

3/3

±6

2,486 0%

115.3s

Wayback

Sep 23, 2026, 5:59 AM UTC

5.52 s

0.055

1.25 s

2.61 MB

3/3

±4

2,474 0%

116.9s

Wayback

Sep 21, 2026, 1:30 AM UTC

4.69 s

1.76 s

3.11 MB

3/3

±11

2,450 -1%

111.6s

Wayback

Sep 18, 2026, 2:02 PM UTC

4.54 s

1.34 s

3.27 MB

3/3

±8

2,961 +19%

105.6s

Wayback

Sep 16, 2026, 9:09 AM UTC

5.48 s

0.055

1.18 s

2.60 MB

3/3

±3

2,470 -1%

120.8s

Wayback

Sep 14, 2026, 5:49 AM UTC

4.55 s

0.055

1.40 s

3.29 MB

3/3

±18

3,241 +30%

106.4s

Wayback

Sep 11, 2026, 11:20 PM UTC

3.49 s

0.055

1.22 s

2.61 MB

3/3

±15

2,327 -6%

124.1s

Wayback

Sep 9, 2026, 6:05 PM UTC

5.43 s

0.055

1.27 s

2.62 MB

3/3

±4

2,478 0%

60.4s

Wayback

Sep 7, 2026, 3:25 PM UTC

4.56 s

0.055

1.98 s

3.33 MB

3/3

±7

2,310 -7%

61.5s

Wayback

Sep 5, 2026, 12:44 PM UTC

4.47 s

0.055

1.99 s

3.26 MB

3/3

±5

2,380 -4%

59.6s

Wayback

Sep 4, 2026, 10:47 AM UTC

9.59 s

0.055

2.40 s

3.25 MB

3/3

±4

2,499 +1%

64.7s

Wayback

Sep 3, 2026, 1:05 AM UTC

9.78 s

0.055

1.30 s

3.13 MB

3/3

±2

2,995 +20%

87.4s

Wayback

Sep 1, 2026, 11:06 PM UTC

9.83 s

0.055

1.67 s

3.29 MB

3/3

±2

2,711 +9%

52.6s

Wayback

Aug 31, 2026, 9:24 PM UTC

10.87 s

0.055

2.30 s

3.30 MB

3/3

±2

2,495 0%

58.8s

Wayback

Aug 26, 2026, 2:50 PM UTC

10.63 s

0.055

1.82 s

3.07 MB

3/3

±6

2,425 -2%

54.6s

Wayback

Aug 25, 2026, 2:02 PM UTC

11.82 s

1.25 s

3.05 MB

3/3

±2

3,364 +35%

48.7s

Wayback

Aug 24, 2026, 12:48 PM UTC

12.00 s

0.046

1.67 s

3.05 MB

3/3

±15

2,894 +16%

63.9s

Wayback

Aug 23, 2026, 12:37 PM UTC

9.42 s

0.055

1.61 s

3.08 MB

3/3

±11

2,923 +18%

86.7s

Wayback

Aug 22, 2026, 11:20 AM UTC

9.67 s

0.055

2.24 s

3.06 MB

3/3

±11

2,504 +1%

61.9s

Wayback

Aug 21, 2026, 10:30 AM UTC

12.03 s

0.055

1.34 s

3.07 MB

3/3

±10

2,986 +20%

48.5s

Wayback

Stack

Filmstrip LAB 🐢 Throttled

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐢 Throttled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Third parties 25 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Best Practices failures 3 of 19 audits

SEO failures 1 of 10 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Filmstrip LAB Throttled

Lighthouse Scores LAB Simulated

LCP Subparts LAB Throttled

LCP LAB Simulated vs LCP FIELD