tiktok.com

https://www.tiktok.com/

Ranks Overall #1,579 Next.js Showcase #28

Data from Sep 21, 2026, 11:17 PM UTC 22h old Measured once a week · 1 run since Sep 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 ReactLit 2.3.1

Hosted by Self-hosted

Filmstrip LAB Throttled

How the page drew during the measured load, at 9 points across 21.05 s. Compare this filmstrip against another site.

1.60 s
5.26 s
7.89 s
10.53 s
13.16 s
15.79 s
18.42 s
18.93 s
21.05 s

Lighthouse Scores LAB Simulated

Performance

no change

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 (2026-08-23 → 2026-09-19), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	12.97 s poor	— 12.97 s – 12.97 s	6.50 s poor	31.2% 24.4% 44.4%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	627 ms poor	36.6% 31.4% 32.1%
CLS CWV Cumulative Layout Shift	0.002 good	— 0.002 – 0.002	0 good	95.4% 2.7% 1.9%
TBT Total Blocking Time	4.68 s poor	— 4.68 s – 4.68 s	n/a	—
FCP First Contentful Paint	3.06 s poor	— 3.06 s – 3.06 s	2.82 s needs work	52% 24.8% 23.1%
Speed Index	9.15 s poor	— 9.15 s – 9.15 s	n/a	—
TTFB Time to First Byte	714 ms good	— 714 ms – 714 ms	1.65 s needs work	39.2% 39.3% 21.5%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

12.97 s poor

— 12.97 s – 12.97 s

6.50 s poor

31.2% 24.4% 44.4%

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

n/a

—

627 ms poor

36.6% 31.4% 32.1%

CLS CWV Cumulative Layout Shift

0.002 good

— 0.002 – 0.002

0 good

95.4% 2.7% 1.9%

TBT Total Blocking Time

4.68 s poor

— 4.68 s – 4.68 s

n/a

—

FCP First Contentful Paint

3.06 s poor

— 3.06 s – 3.06 s

2.82 s needs work

52% 24.8% 23.1%

Speed Index

9.15 s poor

— 9.15 s – 9.15 s

n/a

—

TTFB Time to First Byte

714 ms good

— 714 ms – 714 ms

1.65 s needs work

39.2% 39.3% 21.5%

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 18.23 s

time to first byte 703 ms

LCP LAB Simulated vs LCP FIELD

Lab 12.97 s

Field p75 6.50 s

The lab LCP is 2× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	39.82 MB	— 39.82 MB – 39.82 MB
Requests	166	— 166 – 166
Third-party Weight	3.00 MB	— 3.00 MB – 3.00 MB
Third-party CPU	1.63 s	— 1.63 s – 1.63 s
Unused JS	941 kB	— 941 kB – 941 kB
Unused CSS	51.8 kB	— 51.8 kB – 51.8 kB

Metric

Value

Change / range

Trend

Page Weight

39.82 MB

— 39.82 MB – 39.82 MB

Requests

166

— 166 – 166

Third-party Weight

3.00 MB

— 3.00 MB – 3.00 MB

Third-party CPU

1.63 s

— 1.63 s – 1.63 s

Unused JS

941 kB

— 941 kB – 941 kB

Unused CSS

51.8 kB

— 51.8 kB – 51.8 kB

By resource type

Type	Share	Size	Requests
other	92.5%	36.85 MB	74
script	6.3%	2.52 MB	67
font	0.6%	235 kB	4
image	0.2%	92.4 kB	8
stylesheet	0.2%	73.0 kB	6
document	0.1%	47.5 kB	1
Total		39.82 MB	166

Third parties 6 entities

Entity	Transfer	Size	Main thread Simulated
tiktokcdn-us.com	script	2.61 MB	1.62 s
ttwstatic.com		235 kB	0 ms
Other Google APIs/SDKs		101 kB	14 ms
tiktokw.us		31.8 kB	2 ms
tiktokv.us		20.4 kB	2 ms
All 6		3.00 MB	1.63 s

Entity

Transfer

Size

Main thread Simulated

tiktokcdn-us.com

script

2.61 MB

1.62 s

ttwstatic.com

235 kB

0 ms

Other Google APIs/SDKs

101 kB

14 ms

tiktokw.us

31.8 kB

2 ms

tiktokv.us

20.4 kB

2 ms

All 6

3.00 MB

1.63 s

Without JavaScript

This page is client rendered.

Nothing was painted until the scripts ran. This is a web performance and robustness issue!

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

80.6% 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	14.27 s	— 14.27 s – 14.27 s
Long Tasks	20	— 20 – 20
DOM Elements	685	— 685 – 685
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	44	— 44 – 44
A11y Failures	5	— 5 – 5
A11y Failing Nodes	10	— 10 – 10

Metric

Value

Change / range

Trend

Main Thread Work

14.27 s

— 14.27 s – 14.27 s

Long Tasks

— 20 – 20

DOM Elements

685

— 685 – 685

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

— 44 – 44

A11y Failures

— 5 – 5

A11y Failing Nodes

— 10 – 10

Main thread work

Task	Share	Duration Simulated
script evaluation	66%	9.46 s
other	13%	1.90 s
style layout	10%	1.36 s
script parse compile	7%	949 ms
garbage collection	2%	244 ms
paint composite render	2%	231 ms
parse HTML	1%	130 ms
Total		14.27 s

Task

Time

Duration Simulated

script evaluation

66%

9.46 s

other

13%

1.90 s

style layout

10%

1.36 s

script parse compile

949 ms

garbage collection

244 ms

paint composite render

231 ms

parse HTML

130 ms

Total

14.27 s

Axe violations axe-core 4.13.0, full rule set

44 violating nodes across 9 rules, 688 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 28 nodes
critical label — Form elements must have labels 4 nodes
minor aria-allowed-role — ARIA role should be appropriate for the element 3 nodes
critical button-name — Buttons must have discernible text 3 nodes
moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 2 nodes
moderate heading-order — Heading levels should only increase by one 1 node
critical image-alt — Images must have alternative text 1 node
moderate landmark-no-duplicate-contentinfo — Document should not have more than one contentinfo landmark 1 node
serious link-name — Links must have discernible text 1 node

Accessibility failures 5 of 19 audits

label — Form elements do not have associated labels 4 nodes
button-name — Buttons do not have an accessible name 3 nodes
heading-order — Heading elements are not in a sequentially-descending order 1 node
image-alt — Image elements do not have `[alt]` attributes 1 node
link-name — Links do not have a discernible name 1 node

Best Practices failures 4 of 19 audits

deprecations — Uses deprecated APIs 2 items
third-party-cookies — Uses third-party cookies 1 item
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

SEO failures 3 of 10 audits

crawlable-anchors — Links are not crawlable 1 item
image-alt — Image elements do not have `[alt]` attributes 1 item
canonical — Document does not have a valid `rel=canonical`

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
2026-09-19	6.50 s	627 ms	2.82 s	1.65 s
2026-09-12	6.54 s	627 ms	2.81 s	1.65 s
2026-09-05	6.51 s	610 ms	2.77 s	1.63 s
2026-08-29	6.45 s	601 ms	2.74 s	1.61 s
2026-08-22	6.33 s	591 ms	2.69 s	1.59 s
2026-08-15	6.20 s	584 ms	2.66 s	1.57 s
2026-08-08	6.13 s	585 ms	2.67 s	1.57 s
2026-08-01	6.02 s	578 ms	2.64 s	1.54 s
2026-07-25	6.03 s	577 ms	2.67 s	1.55 s
2026-07-18	6.12 s	582 ms	2.71 s	1.58 s
2026-07-11	6.15 s	590 ms	2.72 s	1.59 s
2026-07-04	6.20 s	605 ms	2.74 s	1.59 s

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-19

6.50 s

627 ms

2.82 s

1.65 s

2026-09-12

6.54 s

627 ms

2.81 s

1.65 s

2026-09-05

6.51 s

610 ms

2.77 s

1.63 s

2026-08-29

6.45 s

601 ms

2.74 s

1.61 s

2026-08-22

6.33 s

591 ms

2.69 s

1.59 s

2026-08-15

6.20 s

584 ms

2.66 s

1.57 s

2026-08-08

6.13 s

585 ms

2.67 s

1.57 s

2026-08-01

6.02 s

578 ms

2.64 s

1.54 s

2026-07-25

6.03 s

577 ms

2.67 s

1.55 s

2026-07-18

6.12 s

582 ms

2.71 s

1.58 s

2026-07-11

6.15 s

590 ms

2.72 s

1.59 s

2026-07-04

6.20 s

605 ms

2.74 s

1.59 s

Runs

Every stored run for this URL, newest first.

When	Scores	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Sep 21, 2026, 11:17 PM UTC		31	12.97 s	0.002	4.68 s	39.82 MB	3/3	±7	2,478 0%	131.9s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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 6 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 5 of 19 audits

Best Practices failures 4 of 19 audits

SEO failures 3 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