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Treemap Firmware Bloat Visualizer (Rust/WebASM)

Treemap Firmware Bloat Visualizer (Rust/WebASM)

by clbrmbr·Mar 5, 2026·1 point·0 comments
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AI Analysis

●●●BangerWizardryEye CandyNiche Gem

WASM treemap visualizer beats Bloaty for instant firmware bloat diagnosis.

Strengths
  • •Entirely Rust/WASM eliminates framework overhead—direct Canvas rendering is snappy
  • •Clever hue-distribution algorithm ensures all colors used evenly across treemap
  • •DWARF debug tracing infers ownership of unnamed .rodata sections, solving real embedded pain
Weaknesses
  • •Limited to STM32/ESP32—macOS binary support missing, reducing cross-platform reach
  • •Requires debug symbols (-g flag) or visualization is incomplete and unhelpful
Target Audience

Embedded firmware developers (STM32, ESP32, ARM Cortex)

Similar To

Bloaty · Go's binary visualization tools

Post Description

tl;dr: i built a webpage that shows you where all the flash space in your firmware project has gone.

Direct link to the tool: https://bondhome.github.io/elfvis/

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