CNC Lighthouse · January 2026 · monthly review

Incident

January 2026: 23 sites have been in sustained incident across every observed week.

Portfolio
Tests run
4335
across 4 observed weeks
Avg pass rate
18.2%
tests-weighted
Recurring offenders
48
flagged in 2+ weeks
Sustained incidents
23
critical every week
Pass-rate trend 4 weeks
0% January 2026 100%
Recurring offenders 48
Abeceda Zahrady HomePage
abecedazahrady.dama.cz
critical

LCP 3.81s (severe, >3.5s)

Flagged 4 of 4 observed weekly snapshots
Blesk Static Article 1
blesk.cz
critical

TBT 726ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
Blesk Static Article 2
blesk.cz
critical

TBT 675ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
Dama Static Article 1
dama.cz
critical

LCP 5.45s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
DigiArena HomePage
digiarena.zive.cz
critical

LCP 4.42s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
Food Piknik HomePage
food-piknik.cz
critical

Performance 23 (critical, <30)

Flagged 4 of 4 observed weekly snapshots
HeyFomo Static Article 3
heyfomo.cz
critical

TBT 674ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
Hodina Dějepichu HomePage
hodinadejepichu.cz
critical

Performance 31 (severe, <40)

Flagged 4 of 4 observed weekly snapshots
iHNed.cz (Competitor) HomePage
ihned.cz
critical

Performance 49 (moderate, <50)

Flagged 4 of 4 observed weekly snapshots
Isport Static Article 1
isport.blesk.cz
critical

LCP 7.14s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
Lide a Zeme Static Article 3
lideazeme.cz
critical

LCP 6.70s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
Liga Naruby HomePage
liganaruby.cz
critical

Performance 18 (critical, <30)

Flagged 4 of 4 observed weekly snapshots
Maminka Static Article 1
maminka.cz
critical

LCP 5.90s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
Mobilmania HomePage
mobilmania.zive.cz
critical

CLS 0.283 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
Mojezdravi Static Article 3
mojezdravi.cz
critical

LCP 4.16s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Extra Static Article 1
extra.cz
critical

TBT 604ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Extra Static Article 2
extra.cz
critical

TBT 716ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Extra Static Article 3
extra.cz
critical

TBT 624ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Tyden HomePage
tyden.cz
critical

CLS 0.270 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Tyden Static Article 1
tyden.cz
critical

CLS 0.273 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Tyden Static Article 2
tyden.cz
critical

CLS 0.304 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
NON-CNC Tyden Static Article 3
tyden.cz
critical

CLS 0.593 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
Pro Ukrajinu HomePage
proukrainu.blesk.cz
critical

LCP 4.66s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
Prozeny Static Article 1
prozeny.blesk.cz
critical

Performance 44 (moderate, <50)

Flagged 4 of 4 observed weekly snapshots
Reflex HomePage
reflex.cz
critical

TBT 1796ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
Reflex Static Article 2
reflex.cz
critical

Performance 41 (moderate, <50)

Flagged 4 of 4 observed weekly snapshots
Reflex Static Article 3
reflex.cz
critical

TBT 729ms (critical, >600ms)

Flagged 4 of 4 observed weekly snapshots
Samsungmania HomePage
samsungmania.mobilmania.zive.cz
critical

CLS 0.424 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
TV Blesk Static Article 1
tv.blesk.cz
critical

LCP 7.07s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
TV Blesk Static Article 2
tv.blesk.cz
critical

LCP 5.13s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
TV Blesk Static Article 3
tv.blesk.cz
critical

LCP 4.75s (critical, >4s)

Flagged 4 of 4 observed weekly snapshots
VTM HomePage
vtm.zive.cz
critical

TBT 470ms (severe, >450ms)

Flagged 4 of 4 observed weekly snapshots
Zbozi Dama HomePage
zbozi.dama.cz
critical

CLS 0.289 (critical, >0.25)

Flagged 4 of 4 observed weekly snapshots
Zive Static Article 2
zive.cz
critical

LCP 3.22s (moderate, >2.5s)

Flagged 4 of 4 observed weekly snapshots
E15 HomePage
e15.cz
critical

TBT 527ms (severe, >450ms)

Flagged 3 of 4 observed weekly snapshots
Isport HomePage
isport.blesk.cz
severe

TBT 498ms (severe, >450ms)

Flagged 3 of 4 observed weekly snapshots
Isport Static Article 3
isport.blesk.cz
severe

TBT 530ms (severe, >450ms)

Flagged 3 of 4 observed weekly snapshots
Moje Psychologie Static Article 1
mojepsychologie.cz
severe

LCP 3.77s (severe, >3.5s)

Flagged 3 of 4 observed weekly snapshots
Mojezdravi Static Article 1
mojezdravi.cz
critical

LCP 3.63s (severe, >3.5s)

Flagged 3 of 4 observed weekly snapshots
Prozeny Static Article 3
prozeny.blesk.cz
severe

TBT 481ms (severe, >450ms)

Flagged 3 of 4 observed weekly snapshots
Doupě HomePage
doupe.zive.cz
critical

TBT 754ms (critical, >600ms)

Flagged 2 of 4 observed weekly snapshots
Lide a Zeme Static Article 2
lideazeme.cz
critical

LCP 6.57s (critical, >4s)

Flagged 2 of 4 observed weekly snapshots
Mimibazar Other Article
mimibazar.cz
severe

LCP 3.84s (severe, >3.5s)

Flagged 2 of 4 observed weekly snapshots
Moje Psychologie Static Article 2
mojepsychologie.cz
severe

LCP 3.75s (severe, >3.5s)

Flagged 2 of 4 observed weekly snapshots
Mojezdravi Static Article 2
mojezdravi.cz
critical

CLS 0.269 (critical, >0.25)

Flagged 2 of 4 observed weekly snapshots
NON-CNC Extra HomePage
extra.cz
critical

TBT 973ms (critical, >600ms)

Flagged 2 of 4 observed weekly snapshots
NON-CNC Super HomePage
super.cz
severe

LCP 3.95s (severe, >3.5s)

Flagged 2 of 4 observed weekly snapshots
Reflex Static Article 1
reflex.cz
critical

Performance 47 (moderate, <50)

Flagged 2 of 4 observed weekly snapshots
Stable
159 sites · 4 of 4 weekly snapshots observed · 4335 tests