Binary vs JSON Payloads for Industrial MQTT Telemetry: Bandwidth, Encoding Strategies, and When Each Wins [2026]
· 14 min read
Every IIoT platform faces the same fundamental design decision for machine telemetry: do you encode data as human-readable JSON, or pack it into a compact binary format?
The answer affects bandwidth consumption, edge buffer capacity, parsing performance, debugging experience, and how well your system degrades under constrained connectivity. Despite what vendor marketing suggests, neither format universally wins. The engineering tradeoffs are real, and the right choice depends on your deployment constraints.
This article breaks down both approaches with the depth that plant engineers and IIoT architects need to make an informed decision.