heroku.com

https://www.heroku.com/

Ranks Overall #1,083 Developer Tooling #27 Web Hosts #2

Data from Oct 7, 2026, 2:39 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

Uses Font Awesome

Hosted by Self-hosted

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 4.29 s. Compare this filmstrip against another site.

537 ms
1.07 s
1.61 s
2.00 s
2.68 s
3.22 s
3.76 s
4.29 s

Lighthouse Scores LAB Simulated

Performance

↓ -3 (-4.2%)

Accessibility

no change

Best Practices

no change

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 (2026-09-07 → 2026-10-04), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	2.96 s needs work	↓ -280 ms (-8.7%) 2.53 s – 3.60 s	1.57 s good	89.7% 6.5% 3.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	149 ms good	85.7% 12.2% 2.1%
CLS CWV Cumulative Layout Shift	0.021 good	→ no change 0.001 – 0.021	0 good	95.2% 3.9% 1%
TBT Total Blocking Time	991 ms poor	↑ +367 ms (+58.8%) 358 ms – 1.13 s	n/a	—
FCP First Contentful Paint	2.47 s needs work	↓ -297 ms (-10.7%) 2.15 s – 3.06 s	1.37 s good	85.1% 9.9% 5%
Speed Index	2.99 s good	↓ -42 ms (-1.4%) 2.63 s – 3.13 s	n/a	—
TTFB Time to First Byte	631 ms good	↑ +20 ms (+3.3%) 603 ms – 632 ms	655 ms good	81.1% 14.5% 4.5%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

2.96 s needs work

↓ -280 ms (-8.7%) 2.53 s – 3.60 s

1.57 s good

89.7% 6.5% 3.8%

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

n/a

—

149 ms good

85.7% 12.2% 2.1%

CLS CWV Cumulative Layout Shift

0.021 good

→ no change 0.001 – 0.021

0 good

95.2% 3.9% 1%

TBT Total Blocking Time

991 ms poor

↑ +367 ms (+58.8%) 358 ms – 1.13 s

n/a

—

FCP First Contentful Paint

2.47 s needs work

↓ -297 ms (-10.7%) 2.15 s – 3.06 s

1.37 s good

85.1% 9.9% 5%

Speed Index

2.99 s good

↓ -42 ms (-1.4%) 2.63 s – 3.13 s

n/a

—

TTFB Time to First Byte

631 ms good

↑ +20 ms (+3.3%) 603 ms – 632 ms

655 ms good

81.1% 14.5% 4.5%

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.

element render delay 1.52 s

time to first byte 595 ms

LCP LAB Simulated vs LCP FIELD

Lab 2.96 s

Field p75 1.57 s

The lab LCP is 1.88× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	2.79 MB	↑ +887 B 2.65 MB – 2.79 MB
Requests	110	↑ +1 (+0.9%) 102 – 110
Third-party Weight	1.10 MB	↑ +755 B (+0.1%) 1.06 MB – 1.10 MB
Third-party CPU	355 ms	↑ +70 ms (+24.4%) 227 ms – 377 ms
Unused JS	851 kB	↓ -1.9 kB (-0.2%) 722 kB – 853 kB
Unused CSS	98.4 kB	→ no change 97.7 kB – 99.3 kB

Metric

Value

Change / range

Trend

Page Weight

2.79 MB

↑ +887 B 2.65 MB – 2.79 MB

Requests

110

↑ +1 (+0.9%) 102 – 110

Third-party Weight

1.10 MB

↑ +755 B (+0.1%) 1.06 MB – 1.10 MB

Third-party CPU

355 ms

↑ +70 ms (+24.4%) 227 ms – 377 ms

Unused JS

851 kB

↓ -1.9 kB (-0.2%) 722 kB – 853 kB

Unused CSS

98.4 kB

→ no change 97.7 kB – 99.3 kB

By resource type

Type	Share	Size	Requests
script	66%	1.84 MB	48
other	16.7%	465 kB	14
font	7.6%	212 kB	6
stylesheet	4.6%	129 kB	12
document	2.9%	81.1 kB	2
image	2.2%	62.0 kB	26
Total		2.79 MB	110

Third parties 10 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	530 kB	221 ms
Google CDN	other	356 kB	98 ms
herokucdn.com	other	146 kB	0 ms
LinkedIn Ads		23.9 kB	11 ms
Parse.ly		22.9 kB	16 ms
All 10		1.10 MB	355 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

530 kB

221 ms

Google CDN

other

356 kB

98 ms

herokucdn.com

other

146 kB

0 ms

LinkedIn Ads

23.9 kB

11 ms

Parse.ly

22.9 kB

16 ms

All 10

1.10 MB

355 ms

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.

Page health

Metric	Value	Change / range
Main Thread Work	5.24 s	↑ +1202 ms (+29.8%) 3.46 s – 5.48 s
Long Tasks	20	→ no change 17 – 20
DOM Elements	2,313	↓ -7 (-0.3%) 2,310 – 2,320
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	3	→ no change 3 – 4
A11y Failures	2	→ no change 2 – 2
A11y Failing Nodes	11	→ no change 11 – 12

Metric

Value

Change / range

Trend

Main Thread Work

5.24 s

↑ +1202 ms (+29.8%) 3.46 s – 5.48 s

Long Tasks

→ no change 17 – 20

DOM Elements

2,313

↓ -7 (-0.3%) 2,310 – 2,320

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

→ no change 3 – 4

A11y Failures

→ no change 2 – 2

A11y Failing Nodes

→ no change 11 – 12

Main thread work

Task	Share	Duration Simulated
script evaluation	54%	2.84 s
other	17%	898 ms
style layout	11%	603 ms
script parse compile	9%	455 ms
parse HTML	4%	211 ms
paint composite render	3%	143 ms
garbage collection	2%	97 ms
Total		5.24 s

Task

Time

Duration Simulated

script evaluation

54%

2.84 s

other

17%

898 ms

style layout

11%

603 ms

script parse compile

455 ms

parse HTML

211 ms

paint composite render

143 ms

garbage collection

97 ms

Total

5.24 s

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 3 rules, 1554 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. .elementor-element-508241cc > p > a:nth-child(1)
```
<a href="https://elements.heroku.com/buildpacks">third-party buildpack</a>
```
moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
Offending element
1. .menu-footer-1-container
```
<nav class="menu-footer-1-container" aria-label="Menu">
```
moderate region — All page content should be contained by landmarks 1 node
Offending element
1. #overlay-description
```
<div id="overlay-description" class="sr-only"> Search overlay panel for performing site-wide searches </div>
```

Accessibility failures 2 of 29 audits

target-size — Touch targets do not have sufficient size or spacing. 10 nodes
color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 1 node

Best Practices failures 4 of 19 audits

third-party-cookies — Uses third-party cookies 8 items
errors-in-console — Browser errors were logged to the console 2 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 2 items

SEO failures 1 of 10 audits

link-text — Links do not have descriptive text 3 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 2 console errors

Measurement log

Field history 25 weeks

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

Week ending	LCP	INP	FCP	TTFB
2026-10-03	1.56 s	148 ms	1.35 s	654 ms
2026-09-26	1.51 s	148 ms	1.30 s	642 ms
2026-09-19	1.52 s	143 ms	1.28 s	603 ms
2026-09-12	1.50 s	143 ms	1.28 s	614 ms
2026-09-05	1.55 s	144 ms	1.33 s	649 ms
2026-08-29	1.45 s	145 ms	1.28 s	616 ms
2026-08-22	1.48 s	146 ms	1.29 s	617 ms
2026-08-15	1.52 s	146 ms	1.33 s	627 ms
2026-08-08	1.45 s	148 ms	1.29 s	616 ms
2026-08-01	1.54 s	147 ms	1.35 s	657 ms
2026-07-25	1.53 s	148 ms	1.35 s	664 ms
2026-07-18	1.51 s	148 ms	1.33 s	671 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-10-03

1.56 s

148 ms

1.35 s

654 ms

2026-09-26

1.51 s

148 ms

1.30 s

642 ms

2026-09-19

1.52 s

143 ms

1.28 s

603 ms

2026-09-12

1.50 s

143 ms

1.28 s

614 ms

2026-09-05

1.55 s

144 ms

1.33 s

649 ms

2026-08-29

1.45 s

145 ms

1.28 s

616 ms

2026-08-22

1.48 s

146 ms

1.29 s

617 ms

2026-08-15

1.52 s

146 ms

1.33 s

627 ms

2026-08-08

1.45 s

148 ms

1.29 s

616 ms

2026-08-01

1.54 s

147 ms

1.35 s

657 ms

2026-07-25

1.53 s

148 ms

1.35 s

664 ms

2026-07-18

1.51 s

148 ms

1.33 s

671 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 7, 2026, 2:39 AM UTC	69	2.96 s	0.021	991 ms	2.79 MB	3/3	±35	2,471 -1%	89.4s	Wayback
Oct 4, 2026, 4:55 AM UTC	72	3.24 s	0.021	624 ms	2.79 MB	3/3	±6	3,349 +35%	81s	Wayback
Sep 30, 2026, 8:36 PM UTC	69	2.84 s	0.021	1.13 s	2.78 MB	3/3	±6	2,499 +1%	87.8s	Wayback
Sep 28, 2026, 6:39 PM UTC	81	3.17 s	0.017	358 ms	2.78 MB	3/3	±35	3,451 +39%	76.1s	Wayback
Sep 25, 2026, 4:43 PM UTC	64	3.60 s	0.001	1.09 s	2.72 MB	3/3	±8	2,479 0%	86s	Wayback
Sep 23, 2026, 6:01 AM UTC	72	2.86 s	0.021	928 ms	2.68 MB	3/3	±4	2,508 +1%	88.6s	Wayback
Sep 21, 2026, 1:32 AM UTC	70	3.08 s	0.021	885 ms	2.68 MB	3/3	±8	2,479 0%	87.8s	Wayback
Sep 18, 2026, 5:30 PM UTC	78	2.53 s	0.021	658 ms	2.68 MB	3/3	±17	2,933 +18%	84.2s	Wayback
Sep 16, 2026, 9:11 AM UTC	67	3.10 s	0.021	1.10 s	2.68 MB	3/3	±9	2,158 -13%	88s	Wayback
Sep 14, 2026, 5:51 AM UTC	77	3.16 s	0.021	529 ms	2.70 MB	3/3	±6	3,358 +35%	79.6s	Wayback
Sep 11, 2026, 11:22 PM UTC	71	3.08 s	0.021	805 ms	2.70 MB	3/3	±0	1,686 -32%	90.7s	Wayback
Sep 9, 2026, 8:28 PM UTC	75	2.64 s	0.021	820 ms	2.69 MB	3/3	±44	2,270 -9%	50s	Wayback
Sep 7, 2026, 7:01 PM UTC	68	3.20 s	0.017	925 ms	2.65 MB	3/3	±5	2,284 -8%	71.7s	Wayback
Sep 5, 2026, 12:45 PM UTC	71	2.78 s	0.017	971 ms	2.70 MB	3/3	±3	2,459 -1%	45.6s	Wayback
Sep 4, 2026, 10:48 AM UTC	71	2.94 s	0.017	960 ms	2.69 MB	3/3	±4	2,497 0%	45.5s	Wayback
Sep 3, 2026, 1:07 AM UTC	72	3.60 s	0.017	485 ms	2.65 MB	3/3	±8	2,973 +20%	87.8s	Wayback
Sep 1, 2026, 11:07 PM UTC	75	2.64 s	0.021	784 ms	2.69 MB	3/3	±6	2,628 +6%	45.1s	Wayback
Aug 31, 2026, 9:25 PM UTC	71	2.68 s	0.021	1.11 s	2.69 MB	3/3	±4	2,478 0%	46.1s	Wayback
Aug 26, 2026, 2:51 PM UTC	73	2.66 s	0.021	946 ms	2.66 MB	3/3	±4	2,487 0%	46.6s	Wayback
Aug 25, 2026, 2:02 PM UTC	77	2.86 s	0.021	629 ms	2.65 MB	3/3	±37	3,242 +30%	40.6s	Wayback
Aug 24, 2026, 12:49 PM UTC	76	2.79 s	0.021	661 ms	2.68 MB	3/3	±9	3,176 +28%	40.3s	Wayback
Aug 23, 2026, 12:39 PM UTC	77	3.08 s	0.017	543 ms	2.65 MB	3/3	±10	2,977 +20%	38.9s	Wayback
Aug 22, 2026, 11:21 AM UTC	72	2.58 s	0.017	998 ms	2.65 MB	3/3	±5	2,475 0%	45.6s	Wayback
Aug 21, 2026, 10:39 AM UTC	76	2.94 s	0.017	628 ms	2.65 MB	3/3	±2	2,918 +17%	38.7s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Archive

Oct 7, 2026, 2:39 AM UTC

2.96 s

0.021

991 ms

2.79 MB

3/3

±35

2,471 -1%

89.4s

Wayback

Oct 4, 2026, 4:55 AM UTC

3.24 s

0.021

624 ms

2.79 MB

3/3

±6

3,349 +35%

81s

Wayback

Sep 30, 2026, 8:36 PM UTC

2.84 s

0.021

1.13 s

2.78 MB

3/3

±6

2,499 +1%

87.8s

Wayback

Sep 28, 2026, 6:39 PM UTC

3.17 s

0.017

358 ms

2.78 MB

3/3

±35

3,451 +39%

76.1s

Wayback

Sep 25, 2026, 4:43 PM UTC

3.60 s

0.001

1.09 s

2.72 MB

3/3

±8

2,479 0%

86s

Wayback

Sep 23, 2026, 6:01 AM UTC

2.86 s

0.021

928 ms

2.68 MB

3/3

±4

2,508 +1%

88.6s

Wayback

Sep 21, 2026, 1:32 AM UTC

3.08 s

0.021

885 ms

2.68 MB

3/3

±8

2,479 0%

87.8s

Wayback

Sep 18, 2026, 5:30 PM UTC

2.53 s

0.021

658 ms

2.68 MB

3/3

±17

2,933 +18%

84.2s

Wayback

Sep 16, 2026, 9:11 AM UTC

3.10 s

0.021

1.10 s

2.68 MB

3/3

±9

2,158 -13%

88s

Wayback

Sep 14, 2026, 5:51 AM UTC

3.16 s

0.021

529 ms

2.70 MB

3/3

±6

3,358 +35%

79.6s

Wayback

Sep 11, 2026, 11:22 PM UTC

3.08 s

0.021

805 ms

2.70 MB

3/3

±0

1,686 -32%

90.7s

Wayback

Sep 9, 2026, 8:28 PM UTC

2.64 s

0.021

820 ms

2.69 MB

3/3

±44

2,270 -9%

50s

Wayback

Sep 7, 2026, 7:01 PM UTC

3.20 s

0.017

925 ms

2.65 MB

3/3

±5

2,284 -8%

71.7s

Wayback

Sep 5, 2026, 12:45 PM UTC

2.78 s

0.017

971 ms

2.70 MB

3/3

±3

2,459 -1%

45.6s

Wayback

Sep 4, 2026, 10:48 AM UTC

2.94 s

0.017

960 ms

2.69 MB

3/3

±4

2,497 0%

45.5s

Wayback

Sep 3, 2026, 1:07 AM UTC

3.60 s

0.017

485 ms

2.65 MB

3/3

±8

2,973 +20%

87.8s

Wayback

Sep 1, 2026, 11:07 PM UTC

2.64 s

0.021

784 ms

2.69 MB

3/3

±6

2,628 +6%

45.1s

Wayback

Aug 31, 2026, 9:25 PM UTC

2.68 s

0.021

1.11 s

2.69 MB

3/3

±4

2,478 0%

46.1s

Wayback

Aug 26, 2026, 2:51 PM UTC

2.66 s

0.021

946 ms

2.66 MB

3/3

±4

2,487 0%

46.6s

Wayback

Aug 25, 2026, 2:02 PM UTC

2.86 s

0.021

629 ms

2.65 MB

3/3

±37

3,242 +30%

40.6s

Wayback

Aug 24, 2026, 12:49 PM UTC

2.79 s

0.021

661 ms

2.68 MB

3/3

±9

3,176 +28%

40.3s

Wayback

Aug 23, 2026, 12:39 PM UTC

3.08 s

0.017

543 ms

2.65 MB

3/3

±10

2,977 +20%

38.9s

Wayback

Aug 22, 2026, 11:21 AM UTC

2.58 s

0.017

998 ms

2.65 MB

3/3

±5

2,475 0%

45.6s

Wayback

Aug 21, 2026, 10:39 AM UTC

2.94 s

0.017

628 ms

2.65 MB

3/3

±2

2,918 +17%

38.7s

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 10 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 2 of 29 audits

Best Practices failures 4 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