Better Ads Monitor

PM Market Report — Ad Load & Compliance

11 of 17 CNC sites exceed density limits; 4 more have ad-format issues; 1 has validated headroom.

Generated 10 Jun 2026 · runs matrix-21032, matrix-21037, matrix-21048, matrix-21056, monthly-202606 · all 126 rows accounted for.

How to read this report
  • Competitor data is observational — measured from the public page only; no GAM, traffic, or revenue data.
  • Density = share of the main content area covered by ads (Σ clipped ad heights ÷ content height).
  • Limits are the Better Ads Standards: mobile >30%, desktop >50% of main content.
  • One hot page disqualifies a headroom candidate — densityMax is the worst sampled URL, not an average.
  • An exact 0.0% is never trusted — it almost always means detection or consent failed; such values are excluded from medians and headroom.

Decision board

11
sites over density limit
of 17 CNC sites — too many ads on at least one section
1
headroom
clean pass, ≤25% on both devices
4
format issues
density in band, other standards failing
1
healthy
no findings

Top priorities

desktop · root page 88.9% vs 50% +38.9 pp
desktop · root page 80.3% vs 50% +30.3 pp
desktop · root page 75.5% vs 50% +25.5 pp
desktop · /regiony 72.7% vs 50% +22.7 pp
mobile · root page 50.3% vs 30% +20.3 pp

Opportunity

headroom
desktop 19.6% · mobile 9.8%
Auto / Moto market median: desktop 49.4% · mobile 9.8%
validate on article pages before pitching

Portfolio comparison — CNC sites

One bar per CNC site — the worst measured density across all of that site's sections. The tick marks the market median of the theme the worst section belongs to.

0%25%50%75%100%Better Ads limit 50%Desktop — worst density % across each site’s sectionsevropa2.czevropa2.cz88.9%theme market median 57.6%mojepsychologie.czmojepsychologie.cz80.3%theme market median 75.5%lideazeme.czlideazeme.cz75.5%theme market median 75.5%blesk.czblesk.cz *72.7%theme market median 43.8%mimibazar.czmimibazar.cz *68.5%theme market median 68.5%autorevue.czautorevue.cz67.4%theme market median 49.4%isport.blesk.czisport.blesk.cz63.0%theme market median 56.5%motogpsport.czmotogpsport.cz60.1%theme market median 56.5%frekvence1.czfrekvence1.cz57.6%theme market median 57.6%f1sport.czf1sport.cz57.4%theme market median 56.5%svetmotoru.auto.czsvetmotoru.auto.cz46.2%theme market median 49.4%ahaonline.czahaonline.cz45.2%theme market median 42.0%e15.cze15.cz45.1%theme market median 19.7%recepty.czrecepty.cz *40.6%theme market median 40.2%bleskprozeny.czbleskprozeny.cz37.9%theme market median 42.0%reflex.czreflex.cz32.2%theme market median 32.2%auto.czauto.cz19.6%theme market median 49.4%
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% theme market median * low-confidence content bounds

Reduce ad load

SiteWorst sectionDeviceDensity vs limitOver by
root page desktop 88.9% vs 50% +38.9 pp
root page desktop 80.3% vs 50% +30.3 pp
2 sections root page desktop 75.5% vs 50% +25.5 pp
lideazeme.cz Lifestyle / Magazine 75.5% 8.5% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 75.5% vs 50% limit
lideazeme.cz Travel 74.9% 8.5% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 74.9% vs 50% limit
4 sections /regiony desktop 72.7% vs 50% +22.7 pp
blesk.cz/zpravy National news 66.1% low-confidence bounds 14.9% Too many ads (density over limit) Autoplay video with sound Pop-up ads Sticky ad too large Too many ads — desktop 66.1% vs 50% limit
blesk.cz Tabloid / Celebrity 8.0% 4.9% Pop-up ads Sticky ad too large Compliant load, but fails: Pop-up ads, Sticky ad too large
blesk.cz/zdravi Health 68.9% low-confidence bounds 12.7% Too many ads (density over limit) Autoplay video with sound Sticky ad too large Pop-up ads Too many ads — desktop 68.9% vs 50% limit
blesk.cz/regiony Regional news 72.7% low-confidence bounds 14.0% Too many ads (density over limit) Sticky ad too large Pop-up ads Too many ads — desktop 72.7% vs 50% limit
root page mobile 50.3% vs 30% +20.3 pp
root page desktop 68.5% vs 50% +18.5 pp
root page desktop 67.4% vs 50% +17.4 pp
root page desktop 63.0% vs 50% +13.0 pp
root page desktop 60.1% vs 50% +10.1 pp
root page desktop 57.6% vs 50% +7.6 pp
root page desktop 57.4% vs 50% +7.4 pp

Fix ad formats

Sites whose ad density is within Better Ads limits but that fail other standards.

SiteIssuesDevice(s)
Pop-up ads Sticky ad too large mobile
2 sections Autoplay video with sound Sticky ad too large desktop + mobile
bleskprozeny.cz Tabloid / Celebrity 37.9% 6.7% Autoplay video with sound Sticky ad too large Compliant load, but fails: Autoplay video with sound, Sticky ad too large
bleskprozeny.cz Women / Fashion 37.9% 6.7% Autoplay video with sound Sticky ad too large Compliant load, but fails: Autoplay video with sound, Sticky ad too large
2 sections Pop-up ads Sticky ad too large desktop + mobile
reflex.cz National news 32.2% 9.2% Pop-up ads Sticky ad too large Compliant load, but fails: Pop-up ads, Sticky ad too large
reflex.cz Lifestyle / Magazine 32.2% 9.1% Sticky ad too large Compliant load, but fails: Sticky ad too large
Sticky ad too large desktop + mobile

Theme drill-down

Tabloid / Celebrity 3 CNC rows · 0 over limit · CNC worst 45.2% (desktop) vs market median 42.0% · 1 gap
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentsuper.czsuper.cz70.2%ahaonline.czahaonline.cz45.2%onetv.czonetv.cz42.0%bleskprozeny.czbleskprozeny.cz37.9%blesk.czblesk.cz8.0%expres.czexpres.czno data — unverified zeroextra.czextra.cz *no data — unverified zerolajk.iprima.czlajk.iprima.czno data — unverified zerolifee.czlifee.cz *no data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 70.2% 0.0% unverified zero Too many ads (density over limit) observational — no verdict for competitors
CNC 45.2% 15.3% Pop-up ads Sticky ad too large Compliant load, but fails: Pop-up ads, Sticky ad too large
competitor 42.0% 0.0% unverified zero — observational — no verdict for competitors
CNC 37.9% 6.7% Autoplay video with sound Sticky ad too large Compliant load, but fails: Autoplay video with sound, Sticky ad too large
CNC 8.0% 4.9% Pop-up ads Sticky ad too large Compliant load, but fails: Pop-up ads, Sticky ad too large
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero Autoplay video with sound observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 42.0% · mobile 6.7%

National news 2 CNC rows · 1 over limit · CNC worst 66.1% (desktop) vs market median 32.2% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentblesk.cz/zpravyblesk.cz/zpravy *66.1%novinky.cznovinky.cz36.9%centrum.czcentrum.cz34.6%aktualne.czaktualne.cz33.6%reflex.czreflex.cz32.2%cnn.iprima.czcnn.iprima.cz26.0%denik.czdenik.cz14.9%seznamzpravy.czseznamzpravy.cz11.6%lidovky.czlidovky.cz3.1%idnes.czidnes.czno data — unverified zerometro.czmetro.czno data — unverified zerozpravy.iprima.czzpravy.iprima.czno data — measurement error
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
/zpravy CNC 66.1% low-confidence bounds 14.9% Too many ads (density over limit) Autoplay video with sound Pop-up ads Sticky ad too large Too many ads — desktop 66.1% vs 50% limit
competitor 36.9% 9.1% — observational — no verdict for competitors
competitor 34.6% n/a Sticky ad too large observational — no verdict for competitors
competitor 33.6% 33.8% Sticky ad too large Too many ads (density over limit) observational — no verdict for competitors
CNC 32.2% 9.2% Pop-up ads Sticky ad too large Compliant load, but fails: Pop-up ads, Sticky ad too large
competitor 26.0% n/a Autoplay video with sound observational — no verdict for competitors
competitor 14.9% 0.0% unverified zero — observational — no verdict for competitors
competitor 11.6% 0.0% unverified zero — observational — no verdict for competitors
competitor 3.1% 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor error n/a Too many ads (density over limit) Autoplay video with sound Pop-up ads Sticky ad too large observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 32.2% · mobile 12.1%

Sport 3 CNC rows · 3 over limit · CNC worst 63.0% (desktop) vs market median 56.5% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentisport.blesk.czisport.blesk.cz63.0%motogpsport.czmotogpsport.cz60.1%f1sport.czf1sport.cz57.4%cnn.iprima.cz/sportcnn.iprima.cz/sport56.5%sport.aktualne.czsport.aktualne.cz43.3%sport.czsport.cz18.7%denik.cz/sportdenik.cz/sport *17.7%idnes.cz/sportidnes.cz/sportno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 63.0% 5.4% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 63.0% vs 50% limit
CNC 60.1% 18.4% Too many ads (density over limit) Sticky ad too large Pop-up ads Too many ads — desktop 60.1% vs 50% limit
CNC 57.4% 12.3% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 57.4% vs 50% limit
/sport competitor 56.5% 0.0% unverified zero Too many ads (density over limit) observational — no verdict for competitors
competitor 43.3% 4.4% Sticky ad too large observational — no verdict for competitors
competitor 18.7% 3.4% — observational — no verdict for competitors
/sport competitor 17.7% low-confidence bounds 3.1% — observational — no verdict for competitors
/sport competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 56.5% · mobile 4.9%

Auto / Moto 3 CNC rows · 2 over limit · CNC worst 67.4% (desktop) vs market median 49.4% · 1 gap
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentautorevue.czautorevue.cz67.4%auto.aktualne.czauto.aktualne.cz63.1%garaz.czgaraz.cz52.5%svetmotoru.auto.czsvetmotoru.auto.cz46.2%autoweb.czautoweb.cz *33.7%auto.czauto.cz19.6%autosalon.tvautosalon.tv *no data — unverified zeroauto.idnes.czauto.idnes.czno data — not measured
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 67.4% 14.0% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 67.4% vs 50% limit
competitor 63.1% 1.5% Too many ads (density over limit) Sticky ad too large observational — no verdict for competitors
competitor 52.5% 3.3% Too many ads (density over limit) observational — no verdict for competitors
CNC 46.2% 50.3% Too many ads (density over limit) Too many ads — mobile 50.3% vs 30% limit
competitor 33.7% low-confidence bounds 19.1% — observational — no verdict for competitors
CNC 19.6% 9.8% — Room for more — mobile 9.8% vs theme median 9.8%
competitor 0.0% unverified zero 6.0% — observational — no verdict for competitors
competitor n/a 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 49.4% · mobile 9.8%

Lifestyle / Magazine 3 CNC rows · 2 over limit · CNC worst 80.3% (desktop) vs market median 75.5% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentmojepsychologie.czmojepsychologie.cz80.3%lideazeme.czlideazeme.cz75.5%reflex.czreflex.cz32.2%dotyk.czdotyk.czno data — unverified zerog.czg.czno data — unverified zerorespekt.czrespekt.czno data — unverified zeroxman.idnes.czxman.idnes.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25%
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 80.3% 6.2% Too many ads (density over limit) Sticky ad too large Pop-up ads Too many ads — desktop 80.3% vs 50% limit
CNC 75.5% 8.5% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 75.5% vs 50% limit
CNC 32.2% 9.1% Sticky ad too large Compliant load, but fails: Sticky ad too large
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 75.5% · mobile 8.5%

Women / Fashion 1 CNC row · 0 over limit · CNC worst 37.9% (desktop) vs market median 50.0% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentprozeny.czprozeny.cz56.0%zeny.iprima.czzeny.iprima.cz50.0%bleskprozeny.czbleskprozeny.cz37.9%elle.czelle.cz *no data — unverified zerofemina.czfemina.czno data — unverified zerokafe.czkafe.cz *no data — unverified zerokvety.czkvety.cz *no data — unverified zeromarianne.czmarianne.cz *no data — unverified zeroona.idnes.czona.idnes.czno data — unverified zerosvetzeny.czsvetzeny.cz *no data — unverified zerovlasta.czvlasta.cz *no data — unverified zerozena.czzena.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 56.0% 0.0% unverified zero Too many ads (density over limit) observational — no verdict for competitors
competitor 50.0% 13.0% Too many ads (density over limit) Autoplay video with sound observational — no verdict for competitors
CNC 37.9% 6.7% Autoplay video with sound Sticky ad too large Compliant load, but fails: Autoplay video with sound, Sticky ad too large
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 50.0% · mobile 9.8%

Business / Economy 1 CNC row · 0 over limit · CNC worst 45.1% (desktop) vs market median 19.7% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentcnn.iprima.cz/ekonomikacnn.iprima.cz/ekonomika56.9%e15.cze15.cz45.1%denik.cz/ekonomikadenik.cz/ekonomika *19.7%ekonom.czekonom.cz16.9%hn.czhn.cz0.6%finance.idnes.czfinance.idnes.czno data — unverified zeroidnes.cz/ekonomikaidnes.cz/ekonomikano data — unverified zeroseznamzpravy.cz/byznysseznamzpravy.cz/byznys *no data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
/ekonomika competitor 56.9% n/a Too many ads (density over limit) observational — no verdict for competitors
CNC 45.1% 5.5% Sticky ad too large Compliant load, but fails: Sticky ad too large
/ekonomika competitor 19.7% low-confidence bounds 0.0% unverified zero — observational — no verdict for competitors
competitor 16.9% 5.2% — observational — no verdict for competitors
competitor 0.6% 4.4% — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
/ekonomika competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
/byznys competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 19.7% · mobile 5.2%

Health 1 CNC row · 1 over limit · CNC worst 68.9% (desktop) vs market median 35.4% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentblesk.cz/zdraviblesk.cz/zdravi *68.9%zdravi.idnes.czzdravi.idnes.cz1.9%fitzivot.czfitzivot.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
/zdravi CNC 68.9% low-confidence bounds 12.7% Too many ads (density over limit) Autoplay video with sound Sticky ad too large Pop-up ads Too many ads — desktop 68.9% vs 50% limit
competitor 1.9% 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 35.4% · mobile 12.7%

Food / Recipes 1 CNC row · 0 over limit · CNC worst 40.6% (desktop) vs market median 40.2% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentrecepty.czrecepty.cz *40.6%vareni.czvareni.cz *39.7%apetitonline.czapetitonline.cz *no data — unverified zerofresh.iprima.czfresh.iprima.czno data — unverified zeroprozeny.cz/sekce/recepty-33prozeny.cz/sekce/recepty-… *no data — unverified zerotoprecepty.cztoprecepty.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 40.6% low-confidence bounds 21.0% low-confidence bounds — Healthy ad load
competitor 39.7% low-confidence bounds 10.7% low-confidence bounds — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero Autoplay video with sound observational — no verdict for competitors
/sekce/recepty-33 competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 40.2% · mobile 15.8%

Travel 1 CNC row · 1 over limit · CNC worst 74.9% (desktop) vs market median 74.9% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentlideazeme.czlideazeme.cz74.9%cestovani.czcestovani.cz *no data — unverified zerocestovani.idnes.czcestovani.idnes.czno data — not measuredpoznatsvet.czpoznatsvet.cz *no data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 74.9% 8.5% Too many ads (density over limit) Sticky ad too large Too many ads — desktop 74.9% vs 50% limit
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor n/a 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 74.9% · mobile 8.5%

Regional news 1 CNC row · 1 over limit · CNC worst 72.7% (desktop) vs market median 43.8% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentblesk.cz/regionyblesk.cz/regiony *72.7%denik.czdenik.cz14.9%idnes.cz/prahaidnes.cz/prahano data — unverified zeronovinky.cz/regionynovinky.cz/regiony *no data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
/regiony CNC 72.7% low-confidence bounds 14.0% Too many ads (density over limit) Sticky ad too large Pop-up ads Too many ads — desktop 72.7% vs 50% limit
competitor 14.9% 0.0% unverified zero — observational — no verdict for competitors
/praha competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
/regiony competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 43.8% · mobile 14.0%

Radio 2 CNC rows · 2 over limit · CNC worst 88.9% (desktop) vs market median 57.6% · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentevropa2.czevropa2.cz88.9%frekvence1.czfrekvence1.cz57.6%impuls.czimpuls.cz36.9%
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25%
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 88.9% 1.3% Too many ads (density over limit) Sticky ad too large Autoplay video with sound Too many ads — desktop 88.9% vs 50% limit
CNC 57.6% 5.3% Too many ads (density over limit) Too many ads — desktop 57.6% vs 50% limit
competitor 36.9% 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 57.6% · mobile 3.3%

E-commerce / Classifieds 1 CNC row · 1 over limit · CNC worst 68.5% (desktop) vs market median 68.5% · 2 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentmimibazar.czmimibazar.cz *68.5%annonce.czannonce.czno data — unverified zerodenik.cz/inzercedenik.cz/inzerce *no data — unverified zeroreality.czreality.cz *no data — unverified zerosbazar.czsbazar.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
CNC 68.5% low-confidence bounds n/a Too many ads (density over limit) Sticky ad too large Too many ads — desktop 68.5% vs 50% limit
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
/inzerce competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 68.5% · mobile n/a

Additional market benchmarks — themes with no CNC presence, observational only

Technology / IT / Gaming competitor benchmark — 2 rows measured · 6 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contenttechnet.idnes.cztechnet.idnes.cz1.7%mobil.czmobil.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25%
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 1.7% 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 1.7% · mobile n/a

TV / Video / Streaming competitor benchmark — 5 rows measured · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentocko.tvocko.tv17.1%iprima.cziprima.cz9.8%dvtv.czdvtv.cz *no data — unverified zerostream.czstream.czno data — unverified zerotv.seznam.cztv.seznam.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 17.1% 0.0% unverified zero — observational — no verdict for competitors
competitor 9.8% 10.6% — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 13.5% · mobile 10.6%

Kids / Family competitor benchmark — 4 rows measured · 1 gap
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentmaminka.czmaminka.cz62.9%emimino.czemimino.czno data — unverified zeroidnes.cz/onadnes/detiidnes.cz/onadnes/detino data — not measuredmateridouska.czmateridouska.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25%
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 62.9% 8.8% Too many ads (density over limit) observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
/onadnes/deti competitor n/a 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 62.9% · mobile 8.8%

Home / Garden competitor benchmark — 4 rows measured · 2 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentbydleni.idnes.czbydleni.idnes.czno data — not measuredhobby.idnes.czhobby.idnes.czno data — unverified zeroireceptar.czireceptar.cz *no data — unverified zeromariannebydleni.czmariannebydleni.cz *no data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor n/a 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop n/a · mobile n/a

Photo / Community competitor benchmark — 1 row measured · 0 gaps
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentrajce.idnes.czrajce.idnes.czno data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25%
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop n/a · mobile n/a

Portal / Mail / Search competitor benchmark — 7 rows measured · 1 gap
0%25%50%75%100%Better Ads limit 50%Desktop — density % of main contentvolny.czvolny.cz54.1%centrum.czcentrum.cz53.7%atlas.czatlas.cz53.4%seznam.czseznam.cz50.3%firmy.czfirmy.cz *6.9%mapy.czmapy.cz *no data — unverified zerozbozi.czzbozi.cz *no data — unverified zero
CNC CNC over limit Competitor (observational) Better Ads limit Headroom zone ≤25% * low-confidence content bounds
Domain / sectionOwner DesktopMobile Failed standardsVerdict
competitor 54.1% n/a Too many ads (density over limit) Sticky ad too large observational — no verdict for competitors
competitor 53.7% n/a Too many ads (density over limit) observational — no verdict for competitors
competitor 53.4% n/a Too many ads (density over limit) Sticky ad too large observational — no verdict for competitors
competitor 50.3% 7.3% Too many ads (density over limit) Sticky ad too large observational — no verdict for competitors
competitor 6.9% low-confidence bounds n/a — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors
competitor 0.0% unverified zero 0.0% unverified zero — observational — no verdict for competitors

Theme median (measured rows incl. competitors): desktop 53.4% · mobile 7.3%

Appendix

Measurement gaps 14 rows not measurable · 7 CNC
ThemeDomainStatusReasonDetail
Technology / IT / Gaming avmania.cz not_measurable turnstile_bot_wall zive.cz-family property behind the same Cloudflare bot challenge; CMP unreachable headless.
CNC property — not externally observable
Technology / IT / Gaming connect.cz not_measurable turnstile_bot_wall Redirects to zive.cz Cloudflare Turnstile bot challenge; CMP never loads.
CNC property — not externally observable
Technology / IT / Gaming digiarena.cz not_measurable turnstile_bot_wall Held at Cloudflare managed-challenge (digiarena.zive.cz); bot wall blocks the CMP.
CNC property — not externally observable
Technology / IT / Gaming doupe.cz not_measurable turnstile_bot_wall Redirects to doupe.zive.cz Turnstile bot challenge; CMP never loads.
CNC property — not externally observable
Technology / IT / Gaming mobilmania.cz not_measurable turnstile_bot_wall Redirects to mobilmania.zive.cz Turnstile bot challenge; CMP blocked.
CNC property — not externally observable
Technology / IT / Gaming zive.cz not_measurable turnstile_bot_wall Cloudflare Turnstile "Verify you are human" wall — real content/CMP never renders headless.
CNC property — not externally observable
Auto / Moto cars.cz not_measurable turnstile_bot_wall Cloudflare Turnstile interstitial blocks the real site; no CMP reachable.
E-commerce / Classifieds hledejceny.cz not_measurable domain_dead ERR_HTTP2_PROTOCOL_ERROR in Chromium and 301 loop to www with empty replies (curl exit 52) from CZ — server is broken, not geo-blocked.
CNC property — not externally observable
E-commerce / Classifieds heureka.cz not_measurable turnstile_bot_wall Cloudflare Turnstile interstitial; real Heureka never loads.
Home / Garden living.cz not_measurable domain_dead Navigation timeout from BOTH US and CZ probes (TCP connects, no HTTP response). Effectively unreachable.
Home / Garden magazinzahrada.cz not_measurable domain_dead Navigation timeout from BOTH US and CZ probes. Effectively unreachable.
Kids / Family betynka.cz not_measurable redirects_to_unrelated_site Domain hosts an unrelated leisure-club organization, not the VLM kids magazine (CZ probe screenshot confirms). The print magazine appears to have no standalone site; fix the taxonomy if one is found.
Portal / Mail / Search email.cz not_measurable login_required Redirects to the Seznam webmail LOGIN portal — an auth gate, not a content surface. Not monitorable.
Tabloid / Celebrity extralife.cz not_measurable domain_parked Under-construction placeholder ("Chystáme pro vás nový web") — no content surface to measure. Re-check after relaunch.
Coverage & runs

Generated 10 Jun 2026 from 112 measured matrix rows.
Runs: matrix-21032, matrix-21037, matrix-21048, matrix-21056, monthly-202606
Screenshots captured across runs monthly-202606, matrix-21037, matrix-21048, matrix-21032, matrix-21056 (manifest 10 Jun 2026).

Full catalog coverage: all 126 matrix rows accounted for (measured or documented gap).

Methodology & definitions

How density is measured. Ad density is the sum of each ad placement's clipped height divided by the height of the page's main content area (Σ clipped_height(ad) ÷ content_height). Each placement is counted once by physical-position dedup; headers, footers and site navigation are excluded from the content area. The reported figure is densityMax — the worst value across all sampled URLs for that row and device.

What "observational" means. Competitor rows are measured exactly like CNC rows but from the public page only: we see rendered ad slots, not ad-server configuration, fill rates, traffic or revenue. Competitor figures are context for comparison, never compliance verdicts.

Content-bounds confidence. Rows whose main-content area was detected via the heuristic or viewport-fallback chain carry a low-confidence bounds badge wherever their density is shown — treat those densities as indicative, not exact.

Verdict vocabulary.

  • Too many ads — measured density above the Better Ads limit (50% desktop / 30% mobile of main content).
  • Format issues — density within limits, but another standard fails (sticky / pop-up / autoplay / prestitial).
  • Headroom — both devices fully pass with a trustworthy density ≤25%. One hot sampled page disqualifies the candidate.
  • Healthy — no violations, but not a headroom candidate.
  • Errored — measurement failed; no verdict is given.
  • Partial (amber dot) — some standards errored while others measured; never shown as a clean pass.
  • Unverified zero — an exact 0.0% density usually means ad detection or consent failed silently; excluded from medians and headroom.
  • Observational — competitor rows get no compliance verdict.

Full method spec: Methodology.