In this report — Opensignal's first analysis of the fixed broadband experience in Croatia — we have examined real-world data from our Croatian users across four key measures of the broadband user experience: Broadband Consistent Quality, Broadband Download Speed, Broadband Peak Download Speed, and Broadband Upload Speed. Our results for Croatian ISPs include a blend of different technologies e.g. cable, FTTH, FWA, or xDSL — but do not include readings from mobile dongles.
We focus only on the three fixed broadband providers that offer nationwide services in this analysis — A1, HT, and Telemach — so we did not cover any regional players. As two major consolidations have taken place in the Croatian fixed broadband market in recent years — Telemach took over Optima in 2023, while HT absorbed its flanker brand Iskon in 2024 — we do not include these two providers as well. All three analyzed broadband providers also offer mobile services as mobile networks, which allows Croatian subscribers to benefit from converged services.
A1 reigns supreme in Croatia in terms of Fixed Broadband Experience, as it has the outright highest scores across all four fixed broadband experience metrics. HT comes second in three categories, but Telemach is the runner-up for Broadband Peak Download Speed.
Our A1 users enjoy the fastest average overall fixed download speeds in Croatia — the provider’s cable network arm is the main driver for this high-speed performance. A1 commands an impressive lead for Broadband Download Speed, with average download speeds 2.7 times faster than HT and 4.8 times faster than Telemach. A1 also comes first for Broadband Upload Speed — again, with a huge winning margin over both HT and Telemach.
A1 triumphs for Broadband Peak Download Speed as well. While Telemach lags behind both its competitors for Broadband Download Speed, it does a lot better in this category. Telemach comes second, with peak download speeds only 14% slower than what we observed on the leader A1’s network.
Broadband Consistent Quality measures how often users’ experience on a network is sufficient to support common demanding applications’ requirements. A1 completes the clean sweep and scores the highest in this category as well — 71.4%. This score reflects the proportion of users’ tests on this network that meet the minimum recommended performance thresholds to watch HD video, complete group video conference calls, and play games.
Methodology and definitions
Opensignal captures user measurements across all broadband network architectures, encompassing fiber (FTTx), xDSL, cable, fixed wireless access (FWA) via 4G and 5G, as well as satellite, and reports on a holistic evaluation of our users’ experience with the listed providers' internet services.
Tariff characteristics — for example, speed tiers or data caps — vary greatly by provider and the dispersion of the plan mix will affect the average experience result. Opensignal’s measurements capture users’ experience, regardless of the plan that they have purchased from their provider. This report analyzes the real-world situation across all users’ plans.
Broadband Consistent Quality
Measures how often users’ experience on a network was sufficient to support common applications’ requirements. Broadband Consistent Quality uses six key performance indicators, including download and upload speed, latency, jitter, packet loss, and time to first byte. Metrics are represented as a percentage of users’ tests that have met the minimum recommended performance thresholds to watch HD video, complete group video conference calls and play games. Broadband Consistent Quality is measured across all users at all hours of the day.
Broadband Download Speed
Measured in Mbps, Broadband Download Speed represents the typical everyday speeds a user experiences across a provider’s network.
Broadband Peak Download Speed
Measured in Mbps, Broadband Peak Download Speed represents the 98th percentile of the user speed distribution. i.e. this is what the users with the highest speeds within the footprint experience.
Broadband Upload Speed
Measured in Mbps, Broadband Upload Speed measures the average upload speeds for each internet service provider observed by our users across their fixed networks. Typically, upload speeds are slower than download speeds, but this often depends on the technology used for broadband connections.
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